2013-2019 Mercedes GLA SUV Driving and parking User Manual
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USER MANUALS FOR EVERY MAKE & MODEL

Driving and parking for Your Mercedes GLA SUV First Generation (2013-2019)

Useful information ............................ 142
Notes on breaking-in a new vehicle
............................................................. 142
Driving ............................................... 142
Automatic transmission ................... 148
Refueling ............................................ 157
Parking ............................................... 159
Driving tips ........................................ 162
Driving systems ................................ 172
141
Driving and parking
Useful information
i
This Operator's Manual describes all
models and all standard and optional equip-
ment of your vehicle available at the time of
publication of the Operator's Manual.
Country-specific differences are possible.
Please note that your vehicle may not be
equipped with all features described. This
also applies to safety-related systems and
functions.
i
Read the information on qualified special-
ist workshops (Y page 28).
Notes on breaking-in a new vehicle
Important safety notes
The sensor system of some driving and driv-
ing safety systems adjusts automatically
while a certain distance is being driven after
the vehicle has been delivered or after
repairs. Full system effectiveness is not
reached until the end of this teach-in proce-
dure.
New and replaced brake pads and discs only
reach their optimum braking effect after sev-
eral hundred kilometers of driving. Compen-
sate for this by applying greater force to the
brake pedal.
The first 1000 miles (1500 km)
The more you look after the engine when it is
new, the more satisfied you will be with its
performance in the future.
R
You should therefore drive at varying vehi-
cle and engine speeds for the first
1000 miles (1500 km).
R
Avoid heavy loads, e.g. driving at full throt-
tle, during this period.
R
Change gear in good time, before the tach-
ometer needle is Ô of the way to the red
area of the tachometer.
R
Do not manually shift to a lower gear to
brake the vehicle.
R
Try to avoid depressing the accelerator
pedal beyond the point of resistance (kick-
down).
R
Ideally, for the first 1000 miles (1500 km),
drive in program E.
After 1,000 miles (1,500 km), you can
increase the engine speed gradually and bring
the vehicle to full speed.
Additional breaking-in notes for AMG vehi-
cles:
R
Do not drive faster than 85 mph
(140 km/h) for the first 1,000 miles
(1,500 km).
R
Only allow the engine to reach a maximum
engine speed of 4,500 rpm briefly.
R
Change gear in good time.
i
You should also observe these notes on
breaking-in if the engine or parts of the
drive train on your vehicle have been
replaced.
i
Always observe the respective speed lim-
its.
Driving
Important safety notes
G
WARNING
Objects in the driver's footwell can restrict the
pedal travel or obstruct a depressed pedal.
The operating and road safety of the vehicle is
jeopardized. There is a risk of an accident.
Make sure that all objects in the vehicle are
stowed correctly, and that they cannot enter
the driver's footwell. Install the floormats
securely and as specified in order to ensure
sufficient clearance for the pedals. Do not use
loose floormats and do not place floormats on
top of one another.
142
Driving
Driving and parking
G
WARNING
Unsuitable footwear can hinder correct usage
of the pedals, e.g.:
R
shoes with thick soles
R
shoes with high heels
R
slippers
There is a risk of an accident.
Wear suitable footwear to ensure correct
usage of the pedals.
G
WARNING
If you switch off the ignition while driving,
safety-relevant functions are only available
with limitations, or not at all. This could affect,
for example, the power steering and the brake
boosting effect. You will require considerably
more effort to steer and brake. There is a risk
of an accident.
Do not switch off the ignition while driving.
G
WARNING
If the parking brake has not been fully
released when driving, the parking brake can:
R
overheat and cause a fire
R
lose its hold function.
There is a risk of fire and an accident. Release
the parking brake fully before driving off.
!
Warm up the engine quickly. Do not use
the engine's full performance until it has
reached operating temperature.
Only shift the automatic transmission to
the desired drive position when the vehicle
is stationary.
Where possible, avoid spinning the drive
wheels when pulling away on slippery
roads. You could otherwise damage the
drive train.
!
AMG vehicles: avoid full-load operation
and engine speeds greater than 5000 rpm
when the engine is cold. This helps to pro-
tect the engine and avoids uncomfortable
driving.
SmartKey positions
g
To remove the SmartKey
(shift the transmission to position P)
1
Power supply for some consumers, such
as the windshield wipers
2
Ignition (power supply for all consumers)
and drive position
3
To start the engine
i
The SmartKey can be turned in the igni-
tion lock even if it is not the correct Smart-
Key for the vehicle. The ignition is not
switched on. The engine cannot be started.
Starting the engine
Important safety notes
G
WARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Inhaling
these exhaust gases leads to poisoning. There
is a risk of fatal injury. Therefore never leave
the engine running in enclosed spaces with-
out sufficient ventilation.
G
WARNING
Flammable materials introduced through
environmental influence or by animals can
ignite if in contact with the exhaust system or
parts of the engine that heat up. There is a risk
of fire.
Carry out regular checks to make sure that
there are no flammable foreign materials in
Driving
143
Driving and parking
Z
the engine compartment or in the exhaust
system.
!
Do not depress the accelerator when
starting the engine.
i
During a cold start, the engine runs at
higher speeds to enable the catalytic con-
verter to reach its operating temperature.
The sound of the engine may change during
this time.
Automatic transmission
X
Shift the transmission to position P.
Transmission position display P is shown in
the multifunction display.
i
When the transmission is in position N,
you can also start the engine with the brake
pedal depressed.
Starting procedure
X
Turn the SmartKey to position 3 in the igni-
tion lock (Y page 143) and release it as
soon as the engine is running.
Pulling away
Automatic transmission
i
It is only possible to shift the transmission
from position P to the desired position if
you depress the brake pedal. Only then can
the parking lock be deactivated. If you do
not depress the brake pedal, the DIRECT
SELECT lever can still be moved but the
parking lock remains engaged.
i
At transmission fluid temperatures below
Ò4 ‡(Ò20 †), you can only shift out of park
position P into another transmission posi-
tion when the engine is running.
X
Depress the brake pedal and keep it
depressed.
X
Shift the transmission to position D or R.
X
Release the brake pedal.
X
Carefully depress the accelerator pedal.
The electric parking brake is automatically
released (Y page 160).
The red F (USA only) or ! (Canada
only) indicator lamp in the instrument clus-
ter goes out.
i
The vehicle locks centrally once you have
pulled away. The locking knobs in the doors
drop down.
You can open the doors from the inside at
any time.
You can also deactivate the automatic lock-
ing feature (Y page 217).
i
Upshifts take place at higher engine
speeds after a cold start. This helps the
catalytic converter to reach its operating
temperature more quickly.
Hill start assist
Hill start assist helps you when pulling away
forwards or in reverse on an uphill gradient. It
holds the vehicle for a short time after you
have removed your foot from the brake pedal.
This gives you enough time to move your foot
from the brake pedal to the accelerator pedal
and to depress it before the vehicle begins to
roll.
G
WARNING
After a short time, hill start assist will no lon-
ger brake your vehicle and it could roll away.
There is a risk of an accident and injury.
Therefore, quickly move your foot from the
brake pedal to the accelerator pedal. Never
leave the vehicle when it is held by hill start
assist.
X
Remove your foot from the brake pedal.
The vehicle is then held for about a second.
X
Pull away.
144
Driving
Driving and parking
Hill start assist is not active if:
R
you are pulling away on a level road or on a
downhill gradient.
R
the transmission is in position N.
R
the electric parking brake is applied.
R
ESP
®
is malfunctioning.
Further information on holding the vehicle
stationary on uphill gradients (Y page 151).
ECO start/stop function
Introduction
The ECO start/stop function switches the
engine off automatically if the vehicle is stop-
ped under certain conditions.
The engine starts automatically when the
driver wants to pull away again. The ECO
start/stop function thereby helps you to
reduce the fuel consumption and emissions
of your vehicle.
Important safety notes
G
WARNING
If the engine is switched off automatically and
you exit the vehicle, the engine is restarted
automatically. The vehicle may begin moving.
There is a risk of accident and injury.
If you wish to exit the vehicle, always turn off
the ignition and secure the vehicle against
rolling away.
General notes
:
ECO start/stop display
If the engine has been switched off automat-
ically by the ECO start/stop function, the
¤ symbol is shown in the multifunction
display.
The stop/start function is automatically acti-
vated each time you start the engine with the
SmartKey.
AMG vehicles: the ECO start/stop function
is only available in drive program C.
Automatic engine switch-off
If the vehicle is braked to a standstill in D or N,
the ECO start/stop function switches off the
engine automatically.
The ECO start/stop function is operational
when:
R
the indicator lamp in the ECO button is lit
green.
R
the off-road program is deactivated.
R
the outside temperature is within the range
that is suitable for the system.
R
the engine is at normal operating temper-
ature.
R
the set temperature for the vehicle interior
has been reached.
R
the battery is sufficiently charged.
R
the system detects that the windshield is
not fogged up when the air-conditioning
system is switched on.
R
the hood is closed.
R
the driver's door is closed and the driver's
seat belt is fastened.
i
All of the vehicle's systems remain active
when the engine is stopped automatically.
i
The HOLD function can also be activated
if the engine has been switched off auto-
matically. It is then not necessary to con-
tinue applying the brakes during the auto-
matic stop phase. When you depress the
accelerator pedal, the engine starts auto-
matically and the braking effect of the
HOLD function is deactivated.
i
The engine can be switched off automat-
ically a maximum of four times (first stop
and three subsequent stops) in succession.
Driving
145
Driving and parking
Z
Automatic engine start
The engine starts automatically if:
R
you switch off the ECO start/stop function
by pressing the ECO button.
R
in transmission position D or N the brake
pedal is released and the HOLD function is
not active.
R
you depress the accelerator pedal.
R
you engage reverse gear R.
R
you move the transmission out of position
P.
R
you activate the off-road program.
R
you unfasten your seat belt or open the
driver's door.
R
the vehicle starts to roll.
R
the brake system requires this.
R
the temperature in the vehicle interior devi-
ates from the set range.
R
the system detects moisture on the wind-
shield when the air-conditioning system is
switched on.
R
the battery's condition of charge is too low.
i
Shifting the transmission to position P
does not start the engine.
Deactivating/activating the ECO start/
stop function
X
To deactivate: press ECO button :.
Indicator lamp ; goes out.
X
To activate: press ECO button :.
Indicator lamp ; lights up.
If the indicator lamp on the ECO button is off,
the ECO start/stop function has been deac-
tivated manually or as the result of a mal-
function.
146
Driving
Driving and parking
Problems with the engine
Problem
Possible causes/consequences and MM Solutions
The engine does not
start.
The HOLD function or DISTRONIC PLUS is activated.
X
Deactivate the HOLD function (Y page 181) or DISTRONIC
PLUS (Y page 174).
X
Try to start the engine again.
The engine does not
start. The starter motor
can be heard.
R
There is a malfunction in the engine electronics.
R
There is a malfunction in the fuel supply.
X
Turn the SmartKey back to position 0 in the ignition lock before
attempting to start the engine again.
X
Try to start the engine again (Y page 143). Avoid excessively
long and frequent attempts to start the engine as these will drain
the battery.
If the engine does not start after several attempts:
X
Consult a qualified specialist workshop.
The engine does not
start. You cannot hear
the starter motor.
The on-board voltage is too low because the battery is too weak or
discharged.
X
Jump-start the vehicle (Y page 315).
If the engine does not start despite attempts to jump-start it:
X
Consult a qualified specialist workshop, e.g. an authorized
Mercedes-Benz Center.
The starter motor was exposed to a thermal load that was too high.
X
Allow the starter motor to cool down for approximately two
minutes.
X
Try to start the engine again.
If the engine still does not start:
X
Consult a qualified specialist workshop.
Driving
147
Driving and parking
Z
Problem
Possible causes/consequences and MM Solutions
The engine is not run-
ning smoothly and is
misfiring.
There is a malfunction in the engine electronics or in a mechanical
component of the engine management system.
X
Only depress the accelerator pedal slightly.
X
Have the cause rectified immediately at a qualified specialist
workshop.
Otherwise, non-combusted fuel may get into the catalytic con-
verter and damage it.
The coolant tempera-
ture display is showing
more than 248 ‡
(120 †). The coolant
warning lamp may also
be lit and a warning
tone may sound.
The coolant level is too low. The coolant is too hot and the engine
is no longer being cooled sufficiently.
X
Stop as soon as possible and allow the engine and the coolant to
cool down.
X
Check the coolant level (Y page 295). Observe the warning
notes as you do so and add coolant if necessary.
Automatic transmission
Important safety notes
G
WARNING
If the engine speed is above the idling speed
and you engage transmission position D or R,
the vehicle could pull away suddenly. There is
a risk of an accident.
When engaging transmission position D or R,
always firmly depress the brake pedal and do
not simultaneously accelerate.
G
WARNING
The automatic transmission switches to neu-
tral position N when you switch off the engine.
The vehicle may roll away. There is a risk of an
accident.
After switching off the engine, always switch
to parking position P. Prevent the parked vehi-
cle from rolling away by applying the parking
brake.
DIRECT SELECT lever
Overview of transmission positions
All vehicles (except AMG vehicles): the
DIRECT SELECT lever is on the right of the
steering column.
For information on the selector lever in AMG
vehicles (Y page 150).
j
Park position with parking lock
k
Reverse gear
i
Neutral
h
Drive
i
The DIRECT SELECT lever always returns
to its original position. The current trans-
mission position P, R, N or D appears in the
148
Automatic transmission
Driving and parking
transmission position display (Y page 149)
in the multifunction display.
Transmission position and drive pro-
gram display
The current transmission position and drive
program appear in the multifunction display.
:
Transmission position display
;
Drive program display
i
The arrows in the transmission position
display show how and into which transmis-
sion positions you can change using the
DIRECT SELECT lever.
!
If the transmission position display in the
multifunction display is not working, you
should pull away carefully to check whether
the desired transmission position is
engaged. Ideally, you should select trans-
mission position D and drive program E or
S.
Engaging park position P
X
Push the DIRECT SELECT lever in the direc-
tion of arrow P.
Transmission position display P is shown in
the multifunction display.
i
When you engage park position P, make
sure that the transmission position display
shows P in the multifunction display.
i
You can only engage park position P when
the vehicle is stationary.
i The automatic transmission shifts into
park position P automatically:
R
if you open the driver's door while the
vehicle is stationary in transmission posi-
tion D or R
R
if you open the door while traveling at
very low speeds in transmission position
D or R
In addition, a warning tone sounds and a
display message is shown.
i
Depressing the brake and pushing the
DIRECT SELECT lever up or down disen-
gages the parking lock. The transmission is
in N neutral.
At transmission fluid temperatures below
Ò4 ‡(Ò20 †), you can only shift out of park
position P into another transmission posi-
tion when the engine is running.
In order to shift from park position P
directly into R or D:
R
depress the brake pedal and
R
push the DIRECT SELECT lever up or
down past the first point of resistance
!
If the engine speed is too high or the vehi-
cle is moving, do not shift the automatic
transmission directly from D to R, from R to
D or directly to P. The automatic transmis-
sion could otherwise be damaged.
Engaging reverse gear R
!
Only shift the automatic transmission to R
when the vehicle is stationary.
i
The ECO start/stop function is not avail-
able when reverse gear is engaged.
Further information on the ECO start/stop
function (Y page 145).
X
When the vehicle is stationary, depress the
brake pedal.
X
Push the DIRECT SELECT lever up past the
first point of resistance.
Automatic transmission
149
Driving and parking
Z
Shifting to neutral N
X
When the vehicle is stationary, depress the
brake pedal.
X
Push the DIRECT SELECT lever up or down
to the first point of resistance.
If the engine has been switched off, the auto-
matic transmission automatically shifts to N.
Remaining in neutral N
If the automatic transmission is to remain in
neutral N, e.g. for washing the vehicle in car
washes with a towing device, please observe
the following instructions:
G
WARNING
If children are left unsupervised in the vehicle,
they could:
R
open the doors, thus endangering other
people or road users.
R
get out and disrupt traffic.
R
operate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
R
release the parking brake.
R
shifting the automatic transmission out of
park position P
R
Start the engine.
There is a risk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children.
R
Make sure that the ignition is switched on.
R
When the vehicle is stationary, depress the
brake pedal and keep it depressed.
R
Shift to neutral N.
R
Release the brake pedal.
R
If the electric parking brake is engaged,
release it.
R
Switch off the ignition and leave the Smart-
Key in the ignition lock.
Engaging drive position D
X
When the vehicle is stationary, depress the
brake pedal.
X
Push the DIRECT SELECT lever down past
the first point of resistance.
Selector lever
Selector lever in AMG vehicles with P button
j
Park position with parking lock
k
Reverse gear
i
Neutral
h
Drive
Transmission position and drive pro-
gram display
Example
:
Transmission position display
;
Drive program display
The current transmission position and drive
program appear in the multifunction display.
150
Automatic transmission
Driving and parking
Engaging park position P
X
When the vehicle is stationary, press P but-
ton :.
Transmission positions
B
Park position
Do not shift the transmission into
position P (Y page 159) unless the
vehicle is stationary. The parking
lock should not be used as a brake
when parking. Always apply the
electronic parking brake in addi-
tion to the parking lock in order to
secure the vehicle.
If the vehicle electronics are mal-
functioning, the transmission may
be locked in position P.
Have the vehicle electronics
checked immediately at a qualified
specialist workshop.
C
Reverse gear
Only shift the transmission to R
when the vehicle is stationary.
A
Neutral
No power is transmitted from the
engine to the drive wheels.
Releasing the brakes will allow you
to move the vehicle freely, e.g. to
push it or tow it.
If ESP
®
is deactivated or faulty:
only shift the transmission to posi-
tion N if the vehicle is in danger of
skidding, e.g. on icy roads.
When you switch off the engine, the
automatic transmission automati-
cally shifts into neutral N.
7
Drive
The automatic transmission
changes gear automatically. All
forward gears are available.
Driving tips
Changing gear
The automatic transmission shifts to the indi-
vidual gears automatically when it is in trans-
mission position D. This automatic gear shift-
ing behavior is determined by:
R
the selected drive program (Y page 152)
R
the position of the accelerator pedal
(Y page 151)
R
the road speed
Accelerator pedal position
Your style of driving influences how the auto-
matic transmission shifts gear:
R
little throttle: early upshifts
R
more throttle: late upshifts
Holding the vehicle stationary on uphill
gradients
G
WARNING
If the clutch overheats, the electronic man-
agement system is automatically deactivated.
Automatic transmission
151
Driving and parking
Z
This interrupts the power transmission. The
vehicle may, for example, roll backwards on
gradients. There is a risk of an accident.
Never hold the vehicle stationary on uphill
gradients by depressing the accelerator.
The clutch may overheat if you hold the vehi-
cle stationary on uphill gradients by depress-
ing the accelerator pedal. If the clutch over-
heats, a warning tone sounds.
All vehicles (except AMG vehicles): the
StopStop VehicleVehicle ShiftShift toto PP LeaveLeave EngineEngine
RunningRunning display message appears in the mul-
tifunction display. You will only be able to
continue your journey once the clutch has
cooled down and the display message in the
multifunction display has disappeared.
AMG vehicles: the
Trans. Oil Overhea‐Trans. Oil Overhea‐
ted Drive on with Care
ted Drive on with Care display message
appears in the multifunction display.
Never hold the vehicle stationary on uphill
gradients by depressing the accelerator.
Instead, only ever hold the vehicle stationary
on uphill gradients by:
R
depressing the brake pedal
R
activating the HOLD function
R
engaging the electric parking brake
Kickdown
AMG vehicles: it is only possible to use kick-
down in temporary manual drive program M.
For further information on manual drive pro-
gram M (Y page 154).
Use kickdown for maximum acceleration.
X
Depress the accelerator pedal beyond the
pressure point.
The automatic transmission shifts to a
lower gear depending on the engine speed.
X
Ease off the accelerator pedal once the
desired speed is reached.
The automatic transmission shifts back up.
Rocking the vehicle free
Shifting the transmission repeatedly between
gears D and R may help to free the vehicle if it
has become stuck in slush or snow. The vehi-
cle's engine management system limits the
speed to a maximum of 5 mph (9 km/h) when
shifting back and forth. To shift back and forth
between transmission positions D and R,
move the DIRECT SELECT lever up and down
past the point of resistance.
Program selector button
General notes
The program selector button allows you to
choose between drive programs with differ-
ent driving characteristics.
Example: program selector button
E Economy Comfortable, economical
driving
S Sport Sporty driving style
M Manual Manual gear shifting
X
Press program selector button : repeat-
edly until the letter for the desired gearshift
program appears in the multifunction dis-
play.
i
The automatic transmission shifts to
automatic drive program E each time the
engine is started.
152
Automatic transmission
Driving and parking
i
For further information on the automatic
drive program, see (Y page 153).
AMG vehicles
C Controlled
Efficiency
Comfortable, economical
driving
S Sport Sporty driving style
M Manual Manual gear shifting
X
Press program selector button : repeat-
edly until the letter for the desired gearshift
program appears in the multifunction dis-
play.
i
The automatic transmission shifts to
automatic drive program C each time the
engine is started.
i
For further information on the automatic
drive program, see (Y page 153).
Steering wheel paddle shifters
:
Left steering wheel paddle shifter (shifts
down)
;
Right steering wheel paddle shifter (shifts
up)
In drive program M, you can change gear
yourself using the steering wheel paddle shift-
ers.
If you pull the left or right steering wheel pad-
dle shifter when in automatic drive program E
(drive program C on AMG vehicles) or S, the
automatic transmission shifts into drive pro-
gram M for a limited time. Depending on
which paddle shifter is pulled, the automatic
transmission immediately shifts into the next
gear down or up.
AMG vehicles: you can activate drive pro-
gram M RACE START (Y page 183) using the
steering wheel paddle shifters.
i
You can only change gear with the steer-
ing wheel paddle shifters when the trans-
mission is in position D.
i
For further information on the manual
drive program, see (Y page 154).
Automatic drive program
Drive program E (drive program C on MAG
vehicles) is characterized by the following:
R
comfort-oriented engine settings.
R
optimal fuel consumption resulting from
the automatic transmission shifting up
sooner.
Automatic transmission
153
Driving and parking
Z
R
the vehicle pulling away more gently in
forward and reverse gears, unless the
accelerator pedal is depressed fully.
R
increased sensitivity. This improves driving
stability on slippery road surfaces, for
example.
R
the automatic transmission shifting up
sooner. This results in the vehicle being
driven at lower engine speeds and the
wheels being less likely to spin.
Drive program S is characterized by the fol-
lowing:
R
sporty engine settings
R
the automatic transmission shifting up
later
R
the fuel consumption possibly being higher
as a result of the later automatic transmis-
sion shift points
Manual drive program
Introduction
In manual drive program M, you can change
gear yourself by using the steering wheel pad-
dle shifters. For this, the transmission must
be in position D. The gear currently selected
and engaged is shown in the multifunction
display.
Manual drive program M differs from drive
programs E (drive program C on AMG vehi-
cles) and S with regard to spontaneity,
responsiveness and smoothness of gear
changes.
Gear Driving situations
=
You can use the engine's braking
effect
5
You can use the braking effect of
the engine on downhill gradients
and for driving:
R
on steep mountain roads
R
in mountainous terrain
R
in arduous conditions
4
To use the braking effect of the
engine on extremely steep downhill
gradients and on long downhill
stretches
Switching on the manual drive program
Activating permanently
X
Press the program selector button
(Y page 152) repeatedly until M appears in
the multifunction display.
Manual drive program M remains active
until drive program E (drive program C on
AMG vehicles) or S is selected.
Activating temporarily
X
Pull the right or left steering wheel paddle
shifter (Y page 153).
M is shown in the multifunction display.
Manual drive program M is temporarily
active. Depending on which paddle shifter
is pulled, the automatic transmission
immediately shifts into the next gear down
or up.
i
When manual drive program M is activa-
ted via the steering wheel paddle shifters,
the temporarily active manual drive pro-
gram M will be deactivated automatically
after a limited time, if the driving situation
permits. The automatic transmission
switches to the previously activated drive
program E (drive program C on AMG vehi-
cles) or S. When driving on downhill gradi-
ents, the temporarily active manual drive
program M will only be deactivated if the
accelerator pedal is depressed while the
vehicle is rolling downhill.
154
Automatic transmission
Driving and parking
Upshifting
X
Pull the right-hand steering wheel paddle
shifter (Y page 153).
The automatic transmission shifts up to the
next gear.
i All vehicles (except AMG vehicles): in
order to prevent engine damage the auto-
matic transmission automatically shifts up:
R
if the maximum engine speed on the cur-
rently engaged gear is reached and
R
you continue to accelerate.
AMG vehicles:
!
In manual drive program M, the automatic
transmission does not shift up automati-
cally even when the engine limiting speed
for the current gear is reached. When the
engine limiting speed is reached, the fuel
supply is cut to prevent the engine from
overrevving. Always make sure that the
engine speed does not reach the red area of
the tachometer. There is otherwise a risk of
engine damage.
Shift recommendation
The gearshift recommendations assist you in
adopting an economical driving style. The rec-
ommended gear is shown in the multifunction
display.
X
Shift to recommended gear ; according
to gearshift recommendation : when
shown in the multifunction display of the
instrument cluster.
AMG vehicles
!
In manual drive program M, the automatic
transmission does not shift up automati-
cally even when the engine limiting speed
for the current gear is reached. When the
engine limiting speed is reached, the fuel
supply is cut to prevent the engine from
overrevving. Always make sure that the
engine speed does not reach the red area of
the tachometer. There is otherwise a risk of
engine damage.
:
Gear indicator
;
Upshift indicator
Before the engine speed reaches the red area,
an upshift indicator will be shown in the mul-
tifunction display.
X
If the color in the speedometer multifunc-
tion display changes to red and the
UPUP dis-
play message is shown, shift up a gear.
Downshifting
X
Pull the left-hand steering wheel paddle
shifter (Y page 153).
The automatic transmission shifts down to
the next gear.
i
If you slow down or stop without shifting
down, the automatic transmission auto-
matically shifts down.
i
For maximum acceleration, pull the left-
hand steering wheel paddle shifter until the
transmission selects the optimum gear for
the current speed.
i
If the engine exceeds the maximum
engine speed when shifting down, the auto-
matic transmission protects against engine
damage by not shifting down.
Automatic transmission
155
Driving and parking
Z
Kickdown
AMG vehicles: it is only possible to use kick-
down in temporary manual drive program M.
You can also use kickdown for maximum
acceleration in manual drive program M.
X
Depress the accelerator pedal beyond the
pressure point.
The automatic transmission shifts to a
lower gear depending on the engine speed.
X
Shift back up once the desired speed is
reached.
i
During kickdown, you cannot shift gears
using the steering wheel paddle shifters.
i
If you apply full throttle, the automatic
transmission shifts up to the next gear
when the maximum engine speed is
reached. This prevents the engine from
overrevving.
Switching off the manual drive program
X
Press the program selector button
(Y page 152) repeatedly until E (drive pro-
gram C in AMG vehicles) or S appears in the
multifunction display.
Deactivating the temporary manual drive
program
X
Pull and hold the right steering wheel pad-
dle shifter until the automatic transmission
shifts into the last active automatic drive
program E (drive program C on AMG vehi-
cles) or S.
i
When manual drive program M is deacti-
vated, the automatic transmission in auto-
matic drive program E (drive program C on
AMG vehicles) or S may shift from the cur-
rent gear into a higher or lower gear. This is
dependent on the position of the accelera-
tor pedal, speed and load.
156
Automatic transmission
Driving and parking
Problems with the transmission
Problem
Possible causes/consequences and MM Solutions
The transmission has
problems shifting gear.
The transmission is losing oil.
X
Have the transmission checked at a qualified specialist work-
shop immediately.
The acceleration ability
is deteriorating.
The transmission no
longer shifts into all of
the gears.
Reverse gear can no
longer be engaged.
The transmission is in emergency mode.
X
Stop the vehicle.
X
Shift the transmission to position P.
X
Switch off the engine.
X
Wait at least 10 seconds before restarting the engine.
X
Shift the transmission to position D.
X
Have the transmission checked at a qualified specialist work-
shop immediately.
Refueling
Important safety notes
G
WARNING
Fuel is highly flammable. If you handle fuel
incorrectly, there is a risk of fire and explo-
sion.
You must avoid fire, open flames, creating
sparks and smoking. Switch off the engine
and, if applicable, the auxiliary heating before
refueling.
G
WARNING
Fuel is poisonous and hazardous to health.
There is a risk of injury.
You must make sure that fuel does not come
into contact with your skin, eyes or clothing
and that it is not swallowed. Do not inhale fuel
vapors. Keep fuel away from children.
If you or others come into contact with fuel,
observe the following:
R
Wash away fuel from skin immediately
using soap and water.
R
If fuel comes into contact with your eyes,
immediately rinse them thoroughly with
clean water. Seek medical assistance with-
out delay.
R
If fuel is swallowed, seek medical assis-
tance without delay. Do not induce vomit-
ing.
R
Immediately change out of clothing which
has come into contact with fuel.
G
WARNING
Electrostatic buildup can create sparks and
ignite fuel vapors. There is a risk of fire and
explosion.
Always touch the vehicle body before opening
the fuel filler flap or touching the fuel pump
nozzle. Any existing electrostatic buildup is
thereby discharged.
!
Do not use diesel to refuel vehicles with a
gasoline engine. Do not switch on the igni-
tion if you accidentally refuel with the
wrong fuel. Otherwise, the fuel will enter
the fuel system. Even small amounts of the
wrong fuel could result in damage to the
fuel system and the engine. Notify a quali-
fied specialist workshop and have the fuel
tank and fuel lines drained completely.
Refueling
157
Driving and parking
Z
!
Overfilling the fuel tank could damage the
fuel system.
!
Take care not to spill any fuel on painted
surfaces. You could otherwise damage the
paintwork.
!
Use a filter when refueling from a fuel can.
Otherwise, the fuel lines and/or injection
system could be blocked by particles from
the fuel can.
Do not get into the vehicle again during the
refueling process. Otherwise, electrostatic
charge could build up again.
If you overfill the fuel tank, fuel could spray
out when the fuel pump nozzle is removed.
For further information on fuel and fuel quality
(Y page 362).
Refueling
General information
The fuel filler flap is unlocked or locked auto-
matically when you open or close the vehicle
with the SmartKey.
The position of the fuel filler cap is displayed
æ in the instrument cluster. The arrow on
the filling pump indicates the side of the vehi-
cle.
Opening the fuel filler flap
:
To open the fuel filler flap
;
Tire pressure table
=
To insert the fuel filler cap
?
Fuel type to be used
X
Switch the engine off.
X
Remove the SmartKey from the ignition
lock.
X
Press the fuel filler flap in the direction of
arrow :.
The fuel filler flap swings up.
X
Turn the fuel filler flap counter-clockwise
and remove it.
X
Insert the fuel filler cap into holder on the
inside of fuel filler flap =.
X
Completely insert the filler neck of the fuel
pump nozzle into the tank, hook in place
and refuel.
X
Only fill the tank until the pump nozzle
switches off.
i
Do not add any more fuel after the pump
stops filling for the first time. Otherwise,
fuel may leak out.
Closing the fuel filler flap
X
Replace the cap on the filler neck and turn
clockwise until it engages audibly.
X
Close the fuel filler flap.
i
Close the fuel filler flap before locking the
vehicle.
i
If you are driving with the fuel filler cap
open, the 8 reserve fuel warning lamp
flashes. A message appears in the multi-
function display (Y page 240).
In addition, the ; Check Engine warning
lamp may light up (Y page 260).
For further information on warning and indi-
cator lamps in the instrument cluster, see
(Y page 260).
158
Refueling
Driving and parking
Problems with fuel and the fuel tank
Problem
Possible causes/consequences and MM Solutions
Fuel is leaking from the
vehicle.
The fuel line or the fuel tank is faulty.
G
WARNING
Risk of explosion or fire.
X
Turn the SmartKey to position 0 in the ignition lock immediately
and remove it (Y page 143).
X
Do not restart the engine under any circumstances.
X
Consult a qualified specialist workshop.
The fuel filler flap can-
not be opened.
The fuel filler flap is not unlocked.
or
The SmartKey battery is discharged.
X
Unlock the vehicle (Y page 76).
or
X
Unlock the vehicle using the mechanical key (Y page 77).
The fuel filler flap is unlocked, but the opening mechanism is jam-
med.
X
Consult a qualified specialist workshop.
Parking
Important safety notes
G
WARNING
Flammable material such as leaves, grass or
twigs may ignite if they come into contact with
hot parts of the exhaust system or exhaust
gas flow. There is a risk of fire.
Park the vehicle so that no flammable mate-
rials come into contact with parts of the vehi-
cle which are hot. Take particular care not to
park on dry grassland or harvested grain
fields.
G
WARNING
If you leave children unsupervised in the vehi-
cle, they could set it in motion by, for example:
R
release the parking brake.
R
shift the automatic transmission out of the
parking position P.
R
start the engine.
In addition, they may operate vehicle equip-
ment and become trapped. There is a risk of
an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
!
Always secure the vehicle correctly
against rolling away. Otherwise, the vehicle
or its drivetrain could be damaged.
Parking
159
Driving and parking
Z
To ensure that the vehicle is secured against
rolling away unintentionally:
R
the electric parking brake must be applied.
R
the transmission must be in position P and
the transmission position display must
show P.
R
the SmartKey must be removed from the
ignition lock.
R
on uphill or downhill gradients, the front
wheels must be turned towards the curb.
Switching off the engine
Important safety notes
G
WARNING
The automatic transmission switches to neu-
tral position N when you switch off the engine.
The vehicle may roll away. There is a risk of an
accident.
After switching off the engine, always switch
to parking position P. Prevent the parked vehi-
cle from rolling away by applying the parking
brake.
Vehicles with automatic transmission
All vehicles (except AMG vehicles)
X
Apply the electric parking brake.
X
Shift the transmission to position P.
AMG vehicles:
X
Apply the electric parking brake.
X
Press button :.
X
Turn the SmartKey to position 0 in the igni-
tion lock and remove it.
The immobilizer is activated.
i
If you switch the engine off with the trans-
mission in position R or D, the automatic
transmission shifts to N automatically.
If you then open one of the front doors or
remove the SmartKey from the ignition, the
automatic transmission shifts to P.
If you shift the automatic transmission to N
before switching off the engine, the auto-
matic transmission remains in N even if a
door is opened.
i The automatic transmission shifts to P
automatically if you:
R
switch off the engine using the SmartKey
and remove the SmartKey from the igni-
tion lock or
R
switch off the engine using the SmartKey
and open a front door.
If you attempt to turn off the engine when the
selector lever is not in position P:
R
a message appears in the multifunction dis-
play
R
a warning signal sounds
Electric parking brake
General notes
G
WARNING
If you leave children unsupervised in the vehi-
cle, they could set it in motion by, for example:
R
release the parking brake.
R
shift the automatic transmission out of the
parking position P.
R
start the engine.
In addition, they may operate vehicle equip-
ment and become trapped. There is a risk of
an accident and injury.
160
Parking
Driving and parking
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
The function of the electric parking brake is
dependent on the on-board voltage. If the on-
board voltage is low or there is a malfunction
in the system, it may not be possible to apply
the released parking brake.
X
If this is the case, only park the vehicle on
level ground and secure it to prevent it roll-
ing away.
X
Shift the automatic transmission to posi-
tion P.
It may not be possible to release an applied
parking brake if the on-board voltage is low or
there is a malfunction in the system. Contact
a qualified specialist workshop.
i
The electric parking brake performs a
function test at regular intervals while the
engine is switched off. The sounds that can
be heard while this is occurring are normal.
Applying/releasing manually
Applying
X
Push handle :.
When the electric parking brake is applied,
the red F (USA only) or ! (Canada
only) indicator lamp lights up in the instru-
ment cluster.
i
The electric parking brake can also be
applied when the SmartKey is removed.
Releasing
X
Pull handle :.
The red F (USA only) or ! (Canada
only) indicator lamp in the instrument clus-
ter goes out.
i
You can only release the electric parking
brake when the SmartKey is in position 1 or
2 in the ignition lock (Y page 143).
Applying automatically
The electric parking brake is applied auto-
matically:
R
if DISTRONIC PLUS brings the vehicle to a
standstill or
R
if the HOLD function is keeping the vehicle
stationary or
R
if Active Parking Assist is holding the vehi-
cle at a standstill
In addition, at least one of the following con-
ditions must be fulfilled:
R
the engine is switched off.
R
the driver's door is open and the seat belt is
not fastened.
R
there is a system malfunction.
R
the power supply is insufficient.
R
the vehicle is stationary for a lengthy
period.
The red F (USA only) or ! (Canada
only) indicator lamp in the instrument cluster
lights up.
i
The electric parking brake is not automat-
ically engaged if the engine is switched off
by the ECO start/stop function.
Releasing automatically
Your vehicle's electric parking brake is auto-
matically released if all of the following con-
ditions are met:
R
the engine is running.
R
the transmission is in position D or R.
R
the seat belt has been fastened.
R
you depress the accelerator pedal.
Parking
161
Driving and parking
Z
If the transmission is in position R, the tailgate
must be closed.
If your seat belt is not fastened, the following
conditions must be fulfilled to automatically
release the electric parking brake:
R
the driver's door is closed.
R
you have shifted out of transmission posi-
tion P or you have previously driven faster
than 2 mph (3 km/h).
i
Ensure that you do not depress the accel-
erator pedal unintentionally. Otherwise the
parking brake will be released and the vehi-
cle will start to move.
Emergency braking
The vehicle can also be braked during an
emergency by using the electric parking
brake.
X
While driving, push handle : of the electric
parking brake (Y page 160).
i
The vehicle is braked for as long as han-
dle : of the electric parking brake is
pressed. The longer electric parking brake
handle : is depressed, the greater the
braking force.
During braking:
R
a warning tone sounds
R
the
Release park. brakeRelease park. brake message
appears
R
the red F (USA only) or ! (Canada
only) indicator lamp in the instrument clus-
ter flashes
When the vehicle has been braked to a stand-
still, the electric parking brake is engaged.
Parking the vehicle for a long period
If you leave the vehicle parked for longer than
four weeks, the battery may be damaged by
exhaustive discharging.
If you leave the vehicle parked for longer than
six weeks, the vehicle may suffer damage as a
result of lack of use.
X
Visit a qualified specialist workshop and
seek advice.
i
You can obtain information about trickle
chargers from a qualified specialist work-
shop.
Driving tips
General notes
Important safety notes
G
WARNING
If you switch off the ignition while driving,
safety-relevant functions are only available
with limitations, or not at all. This could affect,
for example, the power steering and the brake
boosting effect. You will require considerably
more effort to steer and brake. There is a risk
of an accident.
Do not switch off the ignition while driving.
G
WARNING
If you operate mobile communication equip-
ment while driving, you will be distracted from
traffic conditions. You could also lose control
of the vehicle. There is a risk of an accident.
Only operate this equipment when the vehicle
is stationary.
Observe the legal requirements for the coun-
try in which you are driving. Some jurisdic-
tions prohibit the driver from using a mobile
phone while driving a vehicle.
If you make a call while driving, always use
hands-free mode. Only operate the telephone
when the traffic situation permits. If you are
unsure, pull over to a safe location and stop
before operating the telephone.
Bear in mind that at a speed of only 30 mph
(approximately 50 km/h), the vehicle covers
a distance of 44 ft (approximately 14 m) per
second.
162
Driving tips
Driving and parking
Drive sensibly – save fuel
Observe the following tips to save fuel:
R
The tires should always be inflated to the
recommended tire pressure.
R
Remove unnecessary loads.
R
Remove roof racks when they are not nee-
ded.
R
Warm up the engine at low engine speeds.
R
Avoid frequent acceleration or braking.
R
Have all maintenance work carried out as
indicated by the service intervals in the
Maintenance Booklet or by the service
interval display.
Fuel consumption also increases when driv-
ing in cold weather, in stop-start traffic and in
hilly terrain.
Drinking and driving
G
WARNING
Drinking and driving and/or taking drugs and
driving are very dangerous combinations.
Even a small amount of alcohol or drugs can
affect your reflexes, perceptions and judg-
ment.
The possibility of a serious or even fatal acci-
dent is greatly increased when you drink or
take drugs and drive.
Do not drink or take drugs and drive or allow
anyone to drive who has been drinking or tak-
ing drugs.
Emission control
G
WARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Inhaling
these exhaust gases leads to poisoning. There
is a risk of fatal injury. Therefore never leave
the engine running in enclosed spaces with-
out sufficient ventilation.
Certain engine systems are designed to keep
the level of poisonous components in exhaust
fumes within legal limits.
These systems only work at peak efficiency if
they are serviced exactly in accordance with
the manufacturer's specifications. For this
reason, only have work on the engine carried
out by qualified and authorized Mercedes-
Benz technicians.
The engine settings must not be changed
under any circumstances. Furthermore, all
specific service work must be carried out at
regular intervals and in accordance with the
Mercedes-Benz service requirements. Details
can be found in the Maintenance Booklet.
ECO display
The ECO display provides feedback on how
economical your driving characteristics are.
The ECO display assists you in achieving the
most economical driving style for the selec-
ted settings and prevailing conditions. Your
driving style can significantly influence the
vehicle's consumption.
Example: ECO display
The ECO display consists of three bars:
R
AccelerationAcceleration
R
ConstantConstant
R
CoastingCoasting
The percent value is the average value of the
three bars. The three bars and the mean value
begin at the value of 50%. A higher percent-
age indicates a more economical driving
style.
The ECO display does not indicate the actual
fuel consumption. A fixed percentage count
in the ECO display does not indicate a fixed
consumption.
Driving tips
163
Driving and parking
Z
Apart from driving style, consumption is
dependent on many factors such as, e.g.:
R
load
R
tire pressure
R
cold start
R
choice of route
R
electrical consumers switched on
These factors are not included in the ECO dis-
play.
The evaluation of your driving style is carried
out using the following three categories:
R
AccelerationAcceleration (evaluation of all accelera-
tion processes):
-
The bar fills up: moderate acceleration,
especially at higher speeds
-
The bar empties: sporty acceleration
R
ConstantConstant (assessment of driving behavior
at all times):
-
The bar fills up: constant speed and
avoidance of unnecessary acceleration
and deceleration
-
The bar empties: fluctuations in speed
R
CoastingCoasting (assessment of all deceleration
processes):
-
The bar fills up: anticipatory driving,
keeping your distance and early release
of the accelerator. The vehicle can coast
without use of the brakes.
-
The bar empties: frequent braking
i
An economical driving style specially
requires driving at moderate engine
speeds.
To achieve a higher value in the categories
AccelerationAcceleration and ConstantConstant:
R
observe the gearshift recommendations.
R
drive in drive program E.
i
On long journeys at a constant speed, e.g.
on the highway, only the bar for
ConstantConstant
will change.
i
The ECO display summarizes the driving
characteristics from the start of the journey
to its completion. For this reason, the bars
change dynamically at the beginning of the
journey. On longer journeys, there are
fewer changes. For more dynamic changes,
carry out a manual reset.
For further information on the ECO display,
see (Y page 208).
Braking
Important safety notes
G
WARNING
If you shift down on a slippery road surface in
an attempt to increase the engine's braking
effect, the drive wheels could lose their grip.
There is an increased danger of skidding and
accidents.
Do not shift down for additional engine brak-
ing on a slippery road surface.
Downhill gradients
!
On long and steep gradients, you must
reduce the load on the brakes by shifting to
a lower gear in good time. This allows you to
take advantage of the engine's braking
effect. For this, you need to have selected
manual drive program M. This helps you to
avoid overheating the brakes and wearing
them out excessively.
When you take advantage of the engine's
braking effect, a drive wheel may not turn
for some time, e.g. on a slippery road sur-
face. This could cause damage to the drive
train. This type of damage is not covered by
the Mercedes-Benz warranty.
i
Briefly depressing the accelerator pedal
on downhill gradients while the manual
drive program M is temporarily activated:
the automatic transmission may switch to
the last active automatic drive program E or
S. The automatic transmission may shift to
a higher gear. This can reduce the engine's
braking effect.
164
Driving tips
Driving and parking
Heavy and light loads
G
WARNING
If you rest your foot on the brake pedal while
driving, the braking system can overheat. This
increases the stopping distance and can even
cause the braking system to fail. There is a
risk of an accident.
Never use the brake pedal as a footrest. Never
depress the brake pedal and the accelerator
pedal at the same time.
!
Depressing the brake pedal constantly
results in excessive and premature wear to
the brake pads.
If the brakes have been subjected to a heavy
load, do not stop the vehicle immediately.
Drive on for a short while. This allows the air-
flow to cool the brakes more quickly.
Wet roads
If you have driven for a long time in heavy rain
without braking, there may be a delayed reac-
tion from the brakes when braking for the first
time. This may also occur after the vehicle has
been washed or driven through deep water.
You have to depress the brake pedal more
firmly. Maintain a greater distance from the
vehicle in front.
After driving on a wet road or having the vehi-
cle washed, brake firmly while paying atten-
tion to the traffic conditions. This will warm up
the brake discs, thereby drying them more
quickly and protecting them against corro-
sion.
Limited braking performance on salt-
treated roads
If you drive on salted roads, a layer of salt
residue may form on the brake discs and
brake pads. This can result in a significantly
longer braking distance.
R
Brake occasionally to remove any possible
salt residue. Make sure that you do not
endanger other road users when doing so.
R
Carefully depress the brake pedal and the
beginning and end of a journey.
R
Maintain a greater distance to the vehicle
ahead.
Servicing the brakes
!
If the red brake warning lamp lights up in
the instrument cluster and you hear a warn-
ing tone while the engine is running, the
brake fluid level may be too low. Observe
additional warning messages in the multi-
function display.
The brake fluid level may be too low due to
brake pad wear or leaking brake lines.
Have the brake system checked immedi-
ately. This work should be carried out at a
qualified specialist workshop.
!
A function or performance test should
only be carried out on a 2-axle dynamom-
eter. If you are planning to have the vehicle
tested on such a dynamometer, contact an
authorized Mercedes-Benz Center to
obtain further information first. Otherwise,
you could damage the drive train or the
brake system.
!
As the ESP
®
system operates automati-
cally, the engine and the ignition must be
switched off (the SmartKey must be in posi-
tion 0 or 1 in the ignition lock) if:
R
the electric parking brake is tested on a
brake dynamometer (for a maximum of
ten seconds)
R
the vehicle is towed with the front axle
raised.
Braking triggered automatically by ESP
®
may seriously damage the brake system.
All checks and maintenance work on the
brake system must be carried out at a quali-
fied specialist workshop. Consult a qualified
specialist workshop to arrange this.
Driving tips
165
Driving and parking
Z
Have brake pads installed and brake fluid
replaced at a qualified specialist workshop.
If the brake system has only been subject to
moderate loads, you should test the function-
ality of your brakes at regular intervals.
You can find a description of Brake Assist
(BAS) on (Y page 65).
Mercedes-Benz recommends that you only
have brake pads/linings installed on your
vehicle which have been approved for
Mercedes-Benz vehicles or which correspond
to an equivalent quality standard. Brake
pads/linings which have not been approved
for Mercedes-Benz vehicles or which are not
of an equivalent quality could affect your vehi-
cle's operating safety.
Mercedes-Benz recommends that you only
use brake fluid that has been specially
approved for your vehicle by Mercedes-Benz,
or which corresponds to an equivalent quality
standard. Brake fluid which has not been
approved for Mercedes-Benz vehicles or
which is not of an equivalent quality could
affect your vehicle's operating safety.
Checking brake lining thickness
You can measure the break pad/lining thick-
ness using a test gauge. Color-coding (green
or red) on the test gauge allows you to deter-
mine whether the brake pad/lining thickness
is still sufficient. The test gauge is in the vehi-
cle document wallet in the glove box.
Front wheel
Rear wheel
X
Bring the vehicle and wheels into a suitable
position so that you can attach test gauge
A.
X
Secure the vehicle against rolling away
(Y page 159).
X
Move the selector lever to position P.
X
Switch off the engine.
X
Place test gauge A between the wheel's
spokes on brake pad/lining =.
166
Driving tips
Driving and parking
X
Hold test gauge A vertically on brake
disc : and slide measuring pin ; onto
brake disc :.
X
Check which color field ? the arrow on
measuring pin ; is pointing to.
Green: the brake pad/lining thickness is
sufficient.
Red: the brake pad/lining thickness is not
sufficient. Have the brake pads/lining
checked at a qualified specialist workshop.
To avoid an inaccurate measurement:
R
make sure you position the wheels suitably
R
do not put the measuring pin on a recess in
the brake disc
Driving on wet roads
Hydroplaning
If water has accumulated to a certain depth
on the road surface, there is a danger of
hydroplaning occurring, even if:
R
you drive at low speeds.
R
the tires have adequate tread depth.
For this reason, in the event of heavy rain or in
conditions in which hydroplaning may occur,
you must drive in the following manner:
R
lower your speed.
R
avoid ruts.
R
avoid sudden steering movements.
R
brake carefully.
Driving on flooded roads
!
Bear in mind that vehicles traveling in
front or in the opposite direction create
waves. This may cause the maximum per-
missible water depth to be exceeded.
Failure to observe these notes may result in
damage to the engine, electrical systems
and transmission.
If you have to drive on stretches of road on
which water has collected, you should never
drive at speeds above a walking pace.
Always observe the maximum fording depth
values (Y page 369).
Winter driving
G
WARNING
If you shift down on a slippery road surface in
an attempt to increase the engine's braking
effect, the drive wheels could lose their grip.
There is an increased danger of skidding and
accidents.
Do not shift down for additional engine brak-
ing on a slippery road surface.
G
DANGER
If the exhaust pipe is blocked or adequate
ventilation is not possible, poisonous gases
such as carbon monoxide (CO) may enter the
vehicle. This is the case, e.g. if the vehicle
becomes trapped in snow. There is a risk of
fatal injury.
If you leave the engine or the auxiliary heating
running, make sure the exhaust pipe and area
around the vehicle are clear of snow. To
ensure an adequate supply of fresh air, open a
window on the side of the vehicle that is not
facing into the wind.
Have your vehicle winterproofed at a qualified
specialist workshop at the onset of winter.
Drive particularly carefully on slippery road
surfaces. Avoid sudden acceleration, steering
and braking maneuvers. Do not use the cruise
control or DISTRONIC PLUS.
If the vehicle threatens to skid or cannot be
stopped when moving at low speed:
X
Shift the transmission to position N.
X
Try to bring the vehicle under control using
corrective steering.
The outside temperature indicator is not
designed to serve as an ice-warning device
and is therefore unsuitable for that purpose.
Changes in the outside temperature are dis-
played after a short delay.
Driving tips
167
Driving and parking
Z
Indicated temperatures just above the freez-
ing point do not guarantee that the road sur-
face is free of ice. The road may still be icy,
especially in wooded areas or on bridges.
You should pay special attention to road con-
ditions when temperatures are around freez-
ing point.
For more information on driving with snow
chains, see (Y page 327).
For more information on driving with summer
tires, see (Y page 326).
Observe the notes in the "Winter operation"
section (Y page 326).
Off-road driving
Important safety notes
G
WARNING
If you drive on a steep incline at an angle or
turn when driving on an incline, the vehicle
could slip sideways, tip and rollover. There is a
risk of an accident.
Always drive on a steep incline in the line of
fall (straight up or down) and do not turn the
vehicle.
G
WARNING
Flammable material such as leaves, grass or
twigs may ignite if they come into contact with
hot parts of the exhaust system. There is a risk
of fire.
When driving off road or on unpaved roads,
check the vehicle's underside regularly. In
particular, remove parts of plants or other
flammable materials which have become
trapped. In the case of damage, contact a
qualified specialist workshop.
!
There is a risk of damage to the vehicle if:
R
the vehicle becomes stuck, e.g. on a high
curb or an unpaved road
R
you drive too fast over an obstacle, e.g. a
curb or a hole in the road
R
a heavy object strikes the undercarriage
or parts of the chassis
In situations like this, the body, the under-
carriage, chassis parts, wheels or tires
could be damaged without the damage
being visible. Components damaged in this
way can unexpectedly fail or, in the case of
an accident, no longer withstand the strain
they are designed to.
If the underbody paneling is damaged,
combustible materials such as leaves,
grass or twigs can gather between the
underbody and the underbody paneling. If
these materials come in contact with hot
parts of the exhaust system, they can catch
fire.
In such situations, have the vehicle
checked and repaired immediately at a
qualified specialist workshop. If on con-
tinuing your journey you notice that driving
safety is impaired, pull over and stop the
vehicle immediately, paying attention to
road and traffic conditions. In such cases,
visit a qualified specialist workshop.
The vehicle is only designed for easily nego-
tiable off-road terrain and poor road surfaces.
When driving off-road, substances such as
sand, mud and water or water mixed with oil
may get into the brakes. This could result in a
reduced braking effect or in total brake failure
and also in increased wear and tear. The brak-
ing characteristics change depending on the
material ingressing the brakes. Clean the
brakes after driving off-road. If you detect a
reduced braking effect or grinding noises,
have the brake system checked in a qualified
specialist workshop as soon as possible.
Adapt your driving style to the different brak-
ing characteristics.
Driving off-road increases the likelihood of
damage to the vehicle, which, in turn, can lead
168
Driving tips
Driving and parking
to failure of the mechanical assembly or sys-
tems. Adapt your driving style to suit the ter-
rain conditions. Drive carefully. Have damage
to the vehicle rectified immediately at a quali-
fied specialist workshop.
Do not switch to transmission position N
when driving off-road. If you try to brake the
vehicle using the service brake, you could
lose control of the vehicle. If the gradient is
too steep for your vehicle, drive back down in
reverse gear.
General notes
H
Environmental note
Protection of the environment is of primary
importance. Treat nature with respect.
Observe all prohibiting signs.
Read this section carefully before driving your
vehicle off-road.
Off-road driving is only possible with the Off-
Road Engineering package (Y page 186).
The following driving systems are specially
adapted for driving over easily negotiable off-
road terrain:
R
Off-road program (Y page 186)
R
Off-road ABS (Y page 65)
R
Off-road 4ETS (Y page 69)
R
Off-road ESP
®
(Y page 72)
R
DSR (Downhill Speed Regulation)
(Y page 184)
Observe the following notes:
R
Stop the vehicle before starting to drive
along an off-road route. If necessary, acti-
vate the off-road program (Y page 186).
R
To avoid damaging the vehicle, make sure
there is always sufficient ground clearance.
R
Check that items of luggage and loads are
stowed safely and are well secured
(Y page 271).
R
Always keep the engine running and in gear
when driving on a downhill gradient. Acti-
vate DSR (Y page 184).
R
Drive slowly and evenly, if necessary at a
walking pace.
R
Ensure that the wheels are in contact with
the ground at all times.
R
Drive with extreme care on unfamiliar off-
road routes where visibility is poor. For
safety reasons, get out of the vehicle first
and survey the off-road route.
R
Check the depth of water before fording
rivers and streams.
R
Watch out for obstacles.
R
Take care when turning on an uphill or
downhill slope or when driving across a
slope. The vehicle could otherwise tip over.
R
Always keep the side windows and the pan-
orama roof with power tilt/sliding panel
closed during the journey.
R
Do not deviate from marked routes.
i
Do not use the HOLD function when driv-
ing off-road, on steep uphill or downhill gra-
dients or on slippery or loose surfaces. The
HOLD function cannot hold the vehicle on
such surfaces.
Checklist before driving off-road
X
Engine oil level: check the engine oil level
and add oil if necessary.
When driving on steep gradients, the
engine oil level must be sufficiently high to
ensure a correct oil supply in the vehicle.
X
Wheels and tires: check the tire tread
depth and tire pressure.
X
Check for damage and remove any foreign
objects, e.g. small stones, from the
wheels/tires.
X
Replace any missing valve caps.
X
Replace dented or damaged wheels.
X
Rims: dented or bent rims can result in a
loss of tire pressure and damage the tire
bead. Therefore, check your rims before
driving off-road and replace them as
required.
Driving tips
169
Driving and parking
Z
Checklist after driving off-road
!
If you detect damage to the vehicle after
driving off-road, have the vehicle checked
immediately at a qualified specialist work-
shop.
X
Deactivate off-road program (Y page 186).
X
Deactivate DSR (Y page 184).
X
Clean the headlamps and rear lights and
check for damage.
X
Clean the front and rear license plates.
X
Clean the wheels/tires with a water jet and
remove any foreign objects.
X
Clean the wheels, wheel housings and the
vehicle underside with a water jet; check
for any foreign objects and damage.
X
Check whether twigs or other parts of
plants have become trapped. These
increase the risk of fire and can damage
fuel pipes, brake hoses or the rubber bel-
lows of the axle joints and propeller shafts.
X
After the trip, examine without fail the
entire undercarriage, wheels, tires, brakes,
bodywork structure, steering, chassis and
exhaust system for damage.
X
After driving in sand, mud, gravel, water or
similar dirty conditions, have the following
checked and cleaned:
R
brake discs
R
the wheels
R
brake pads
R
axle joints
X
If you detect strong vibrations after off-road
travel, check for foreign objects in the
wheels and drive train and remove them if
necessary. Foreign objects can disturb the
balance and cause vibrations.
Driving over poor road surfaces places
greater demands on your vehicle than driving
on normal roads. After driving off-road, check
the vehicle. This allows you to detect damage
promptly and reduce the risk of an accident to
yourself and other road users.
Driving on sand
Observe the following rules when driving on
sand:
R
Select the off-road program (Y page 186).
R
Avoid high engine speeds.
R
Use the left-hand steering wheel paddle
shifter to shift to a lower gear appropriate
to the terrain.
R
Drive quickly to overcome the rolling resist-
ance. Otherwise the vehicle's wheels could
become stuck in loose ground.
R
Drive in the tracks of other vehicles if pos-
sible. Make sure that:
-
the tire ruts are not too deep.
-
the sand is sufficiently firm.
-
the ground clearance of the vehicle is
sufficient.
Tire ruts and gravel roads
!
Check that the ruts are not too deep and
that your vehicle has sufficient clearance.
Otherwise, your vehicle could be damaged
or bottom out and get stuck.
Observe the following rules when driving
along ruts in off-road terrain or on roads with
loose gravel:
R
Activate the off-road program
(Y page 186).
R
Avoid high engine speeds.
R
Shift to a lower gear using the left-hand
steering wheel paddle shifter.
R
Drive slowly.
R
Where ruts are too deep, drive with the
wheels of one side on the center grassy
area, if possible.
Traveling uphill
Approach/departure angle
G
WARNING
If you drive on a steep incline at an angle or
turn when driving on an incline, the vehicle
170
Driving tips
Driving and parking
could slip sideways, tip and rollover. There is a
risk of an accident.
Always drive on a steep incline in the line of
fall (straight up or down) and do not turn the
vehicle.
R
Observe the warnings for off-road driving
(Y page 168).
R
Follow the line of fall when driving on slopes
and steep inclines.
R
Before driving on extreme uphill and down-
hill gradients, select the off-road program
(Y page 186).
R
Drive slowly.
R
Accelerate gently and make sure that the
wheels are gripping.
R
Avoid high engine speeds, except when
driving on sandy and muddy routes with
high driving resistance.
R
Use the left-hand steering wheel paddle
shifter to shift to a lower gear appropriate
to the gradient.
R
Use the left-hand paddle shifter to shift into
a lower gear in good time on long and steep
downhill gradients.
i
Hill start assist will aid you when pulling
away on a hill.
For further information about hill start
assist, see (Y page 144).
Do not switch to transmission position N
when driving off-road. If you try to brake the
vehicle using the service brake, you could
lose control of the vehicle. If the gradient is
too steep for your vehicle, drive back down in
reverse gear.
Always observe the approach/departure
angle values (Y page 369).
Maximum gradient-climbing capability
Always observe the maximum gradient climb-
ing ability values (Y page 369).
Hilltops
When driving up an uphill gradient, slightly
reduce pressure on the accelerator immedi-
ately before reaching the brow of the hill.
Make use of the vehicle's own impetus to
travel over the brow.
This style of driving prevents:
R
the vehicle from lifting off the ground on the
brow of a hill
R
the vehicle from traveling too quickly down
the other side
Driving downhill
R
Drive slowly.
R
Do not drive at an angle down steep
inclines. Steer into the line of fall and drive
with the front wheels aligned straight. Oth-
erwise, the vehicle could slip sideways, tip
and rollover.
R
Shift to a lower gear using the left-hand
paddle shifter before tackling steep down-
hill gradients.
R
Activate DSR. If this is not sufficient, brake
gently. When doing so, make sure that the
vehicle is facing in the direction of the line
of fall.
R
Check that the brakes are working normally
after a long downhill stretch.
i
Off-road ABS is activated when the off-
road program is selected.
At speeds below 18 mph (30 km/h), the
front wheels lock cyclically during braking.
The digging-in effect achieved in the proc-
ess reduces the stopping distance on off-
road terrain. The steerability of the vehicle
is considerably reduced if the wheels lock.
Driving tips
171
Driving and parking
Z
Driving systems
Cruise control
General notes
Cruise control maintains a constant road
speed for you. It brakes automatically in order
to avoid exceeding the set speed. On long and
steep downhill gradients, especially if the
vehicle is laden, you must select a low gear in
good time. For this, you will need to have
selected manual drive program M
(Y page 154). By doing so, you will make use
of the braking effect of the engine. This
relieves the load on the brake system and
prevents the brakes from overheating and
wearing too quickly.
Use cruise control only if road and traffic con-
ditions make it appropriate to maintain a
steady speed for a prolonged period. You can
store any road speed above 20 mph
(30 km/h).
Important safety notes
If you fail to adapt your driving style, cruise
control can neither reduce the risk of an acci-
dent nor override the laws of physics. Cruise
control cannot take into account the road,
traffic and weather conditions. Cruise control
is only an aid. You are responsible for the dis-
tance to the vehicle in front, for vehicle speed,
for braking in good time and for staying in
your lane.
Do not use cruise control:
R
in road and traffic conditions which do not
allow you to maintain a constant speed e.g.
in heavy traffic or on winding roads
R
on slippery road surfaces. Braking or accel-
erating could cause the drive wheels to lose
traction and the vehicle could then skid
R
when there is poor visibility, e.g. due to fog,
heavy rain or snow
If there is a change of drivers, advise the new
driver of the speed stored.
Cruise control lever
:
To activate or increase speed
;
To activate or reduce speed
=
To deactivate cruise control
?
To activate at the current speed/last
stored speed
When you activate cruise control, the stored
speed is shown in the multifunction display
for five seconds.
Activation conditions
To activate cruise control, all of the following
activation conditions must be fulfilled:
R
the electric parking brake must be
released.
R
you are driving faster than 20 mph
(30 km/h).
R
ESP
®
must be active, but not intervening.
R
on vehicles with automatic transmission,
the selector lever must be in position D.
Storing, maintaining and calling up a
speed
Storing and maintaining the current
speed
You can store the current speed if you are
driving faster than 20 mph (30 km/h).
172
Driving systems
Driving and parking
X
Accelerate the vehicle to the desired
speed.
X
Briefly press the cruise control lever up :
or down ;.
X
Remove your foot from the accelerator
pedal.
Cruise control is activated. The vehicle
automatically maintains the stored speed.
i
Cruise control may be unable to maintain
the stored speed on uphill gradients. The
stored speed is resumed when the gradient
evens out. Cruise control maintains the
stored speed on downhill gradients by
automatically applying the brakes.
Storing the current speed or calling up the
last stored speed
G
WARNING
If you call up the stored speed and it differs
from the current speed, the vehicle acceler-
ates or decelerates. If you do not know the
stored speed, the vehicle could accelerate or
brake unexpectedly. There is a risk of an acci-
dent.
Pay attention to the road and traffic condi-
tions before calling up the stored speed. If you
do not know the stored speed, store the
desired speed again.
X
Briefly pull the cruise control lever towards
you ?.
X
Remove your foot from the accelerator
pedal.
The first time cruise control is activated, it
stores the current speed or regulates the
speed of the vehicle to the previously
stored speed.
Setting a speed
Keep in mind that it may take a brief moment
until the vehicle has accelerated or braked to
the speed set.
X
Press the cruise control lever up : for a
higher speed or down ; for a lower speed.
X
To adjust the set speed in 1 mph incre-
ments (1 km/h increments): briefly
press the cruise control lever up : or
down ; to the pressure point.
Every time the cruise control lever is
pressed up : or down ; the last speed
stored is increased or reduced.
X
To adjust the set speed in 5 mph incre-
ments (10 km/h increments): briefly
press the cruise control lever up : or
down ; to the pressure point.
Every time the cruise control lever is
pressed up : or down ; the last speed
stored is increased or reduced.
i
Cruise control is not deactivated if you
depress the accelerator pedal. For exam-
ple, if you accelerate briefly to overtake,
cruise control adjusts the vehicle's speed
to the last speed stored after you have fin-
ished overtaking.
Deactivating cruise control
There are several ways to deactivate cruise
control:
X
Briefly press the cruise control lever for-
wards = .
or
X
Brake.
Cruise control is automatically deactivated if:
R
the vehicle is secured with the electric
parking brake
R
you are driving at less than 20 mph
(30 km/h)
R
ESP
®
intervenes or you deactivate ESP
®
R
you shift the transmission to position N
while driving
If cruise control is deactivated, you will hear a
warning tone. You will see the
Cruise Con‐Cruise Con‐
trol Offtrol Off message in the multifunction dis-
play for approximately five seconds.
Driving systems
173
Driving and parking
Z
i
When you switch off the engine, the last
speed stored is cleared.
DISTRONIC PLUS
General notes
DISTRONIC PLUS regulates the speed and
automatically helps you maintain the dis-
tance to the vehicle detected in front. Vehi-
cles are detected with the aid of the radar
sensor system. DISTRONIC PLUS brakes
automatically so that the set speed is not
exceeded.
Change into a lower gear in good time on long
and steep downhill gradients. This is espe-
cially important if the vehicle is laden. By
doing so, you will make use of the braking
effect of the engine. This relieves the load on
the brake system and prevents the brakes
from overheating and wearing too quickly.
If DISTRONIC PLUS detects that there is a risk
of a collision, you will be warned visually and
acoustically. DISTRONIC PLUS cannot pre-
vent a collision without your intervention. An
intermittent warning tone will then sound and
the distance warning lamp will light up in the
instrument cluster. Brake immediately in
order to increase the distance to the vehicle
in front or take evasive action provided it is
safe to do so.
DISTRONIC PLUS operates in range between
0 mph (0 km/h) and 120 mph (200 km/h).
Do not use DISTRONIC PLUS while driving on
roads with steep gradients.
As DISTRONIC PLUS transmits radar waves, it
can resemble the radar detectors of the
responsible authorities. You can refer to the
relevant chapter in the Operator's Manual if
questions are asked about this.
i
This device complies with RSS-210 of
Industry Canada. Operation is subject to
the following two conditions:
1. This device may not cause harmful inter-
ference, and
2. this device must accept any interference
received, including interference that may
cause undesired operation of the device.
Removal, tampering, or altering of the
device will void any warranties, and is not
permitted. Do not tamper with, alter, or use
in any non-approved way.
Any unauthorized modification to this
device could void the user's authority to
operate the equipment.
Important safety notes
G
WARNING
DISTRONIC PLUS does not react to:
R
people or animals
R
stationary obstacles on the road, e.g. stop-
ped or parked vehicles
R
oncoming and crossing traffic
As a result, DISTRONIC PLUS may neither give
warnings nor intervene in such situations.
There is a risk of an accident.
Always pay careful attention to the traffic sit-
uation and be ready to brake.
G
WARNING
DISTRONIC PLUS cannot always clearly iden-
tify other road users and complex traffic sit-
uations.
In such cases, DISTRONIC PLUS may:
R
give an unnecessary warning and then
brake the vehicle
R
neither give a warning nor intervene
R
accelerate or brake unexpectedly
There is a risk of an accident.
Continue to drive carefully and be ready to
brake, in particular when warned to do so by
DISTRONIC PLUS.
G
WARNING
DISTRONIC PLUS brakes your vehicle with up
to 50% of the maximum possible deceleration.
If this braking force is insufficient, DISTRONIC
174
Driving systems
Driving and parking
PLUS warns you visually and audibly. There is
a risk of an accident.
In such cases, apply the brakes yourself and
try to take evasive action.
!
If DISTRONIC PLUS or the HOLD function
is activated, the vehicle brakes automati-
cally in certain situations. To prevent dam-
age to the vehicle, deactivate DISTRONIC
PLUS and the HOLD function in the follow-
ing or other similar situations:
R
when towing the vehicle
R
in the car wash
If you fail to adapt your driving style, DIS-
TRONIC PLUS can neither reduce the risk of
accident nor override the laws of physics.
DISTRONIC PLUS cannot take into account
the road, traffic and weather conditions. DIS-
TRONIC PLUS is only an aid. You are respon-
sible for the distance to the vehicle in front,
for vehicle speed, for braking in good time and
for staying in your lane.
Do not use DISTRONIC PLUS:
R
in road and traffic conditions which do not
allow you to maintain a constant speed e.g.
in heavy traffic or on winding roads
R
on slippery road surfaces. Braking or accel-
erating could cause the drive wheels to lose
traction and the vehicle could then skid
R
when there is poor visibility, e.g. due to fog,
heavy rain or snow
DISTRONIC PLUS may not detect narrow
vehicles driving in front, e.g. motorcycles, or
vehicles driving on a different line.
In particular, the detection of obstacles can
be impaired if:
R
there is dirt on the sensors or anything else
covering the sensors
R
there is snow or heavy rain
R
there is interference by other radar sources
R
there are strong radar reflections, for
example, in parking garages
If DISTRONIC PLUS no longer detects a vehi-
cle in front, DISTRONIC PLUS may unexpect-
edly accelerate the vehicle to the stored
speed.
This speed may:
R
be too high if you are driving in a filter lane
or an exit lane
R
be so high when driving in the right-hand
lane that you overtake vehicles in the left-
hand lane
R
be so high when driving in the left-hand lane
that you overtake vehicles in the right-hand
lane
If there is a change of drivers, advise the new
driver of the speed stored.
Cruise control lever
:
To store the current speed or a higher
speed
;
To store the current speed or a lower
speed
=
To deactivate DISTRONIC PLUS
?
To store the current speed or call up the
last stored speed
A
To set the specified minimum distance
Activating DISTRONIC PLUS
Activation conditions
To activate DISTRONIC PLUS, all of the fol-
lowing activation conditions must be fulfilled:
R
the engine must be started. It may take up
to two minutes after pulling away before
DISTRONIC PLUS is operational.
R
the electric parking brake must be
released.
Driving systems
175
Driving and parking
Z
R
ESP
®
must be active, but not intervening.
R
Active Parking Assist must not be activa-
ted.
R
DSR must be deactivated.
R
the transmission must be in position D.
R
the driver's door must be closed when you
shift from P to D or your seat belt must be
fastened.
R
the front-passenger door and rear doors
must be closed.
Activating
X
Briefly pull the cruise control lever towards
you ? or press it up : or down ;.
DISTRONIC PLUS is selected.
X
Press the cruise control lever repeatedly
up : or down ; until the desired speed is
set.
X
Remove your foot from the accelerator
pedal.
Your vehicle adapts its speed to that of the
vehicle in front, but only up to the desired
stored speed.
i
If you do not fully release the accelerator
pedal, the
DISTRONICDISTRONIC PLUSPLUS PassivePassive mes-
sage appears in the multifunction display.
The set distance to a slower-moving vehicle
in front will then not be maintained. You will
be driving at the speed you determine by
the position of the accelerator pedal.
You can also activate DISTRONIC PLUS when
stationary. The lowest speed that can be set is
18 mph (30 km/h).
X
Briefly pull the cruise control lever towards
you ? or press it up : or down ;.
DISTRONIC PLUS is selected.
Activating at the current speed/last
stored speed
G
WARNING
If you call up the stored speed and it differs
from the current speed, the vehicle acceler-
ates or decelerates. If you do not know the
stored speed, the vehicle could accelerate or
brake unexpectedly. There is a risk of an acci-
dent.
Pay attention to the road and traffic condi-
tions before calling up the stored speed. If you
do not know the stored speed, store the
desired speed again.
X
Briefly pull the cruise control lever
(Y page 175) towards you ?.
X
Remove your foot from the accelerator
pedal.
DISTRONIC PLUS is activated. The first
time it is activated, the current speed is
stored. Otherwise, it sets the vehicle cruise
speed to the previously stored value.
Driving with DISTRONIC PLUS
Pulling away and driving
i
The vehicle can also pull away when it is
facing an unidentified obstacle or is driving
on a different line from another vehicle. The
vehicle then brakes automatically. There is
a risk of an accident. Be ready to brake at all
times.
If you depress the brake, DISTRONIC PLUS is
deactivated unless your vehicle is stationary.
X
If you want to pull away with DIS-
TRONIC PLUS: remove your foot from the
brake pedal.
X
Briefly pull the cruise control lever
(Y page 175) towards you ?.
or
X
Accelerate briefly.
Your vehicle pulls away and adapts its
speed to that of the vehicle in front.
If no vehicle is detected in front, your vehi-
cle accelerates to the set speed.
If there is no vehicle in front, DISTRONIC
PLUS operates in the same way as cruise
control.
If DISTRONIC PLUS detects that the vehicle in
front has slowed down, it brakes your vehicle.
In this way, the distance you have selected is
maintained.
176
Driving systems
Driving and parking
If DISTRONIC PLUS detects a faster-moving
vehicle in front, it increases the driving speed.
The vehicle is only accelerated up to the
speed you have stored.
Selecting the drive program
DISTRONIC Plus supports a sporty driving
style when you have selected the S or M driv-
ing program (Y page 152). Acceleration
behind the vehicle in front or to the set speed
is then noticeably more dynamic. If you have
selected the E driving program, the vehicle
accelerates more gently. This setting is rec-
ommended in stop-and-start traffic.
Changing lanes
If you change to the passing lane, DISTRONIC
PLUS supports you when:
R
you are driving faster than 43.5 mph
(70 km/h)
R
DISTRONIC PLUS is maintaining the dis-
tance to a vehicle in front
R
you switch on the appropriate turn signal
R
DISTRONIC PLUS does not detect a danger
of collision
If these conditions are fulfilled, your vehicle is
accelerated. Acceleration will be interrupted
if changing lanes takes too long or if the dis-
tance between your vehicle and the vehicle in
front becomes too small.
Stopping
G
WARNING
When leaving the vehicle, even if it is braked
only by DISTRONIC PLUS, it could roll away if:
R
there is a malfunction in the system or in
the voltage supply.
R
DISTRONIC PLUS has been deactivated
with the cruise control lever, e.g. by a vehi-
cle occupant or from outside the vehicle.
R
the electrical system in the engine com-
partment, the battery or the fuses have
been tampered with.
R
the battery is disconnected.
R
the accelerator pedal has been depressed,
e.g. by a vehicle occupant.
There is a risk of an accident.
If you wish to exit the vehicle, always turn off
DISTRONIC PLUS and secure the vehicle
against rolling away.
For further information on deactivating DIS-
TRONIC PLUS (Y page 178).
If DISTRONIC PLUS detects that the vehicle in
front is stopping, it brakes your vehicle until it
is stationary.
Once your vehicle is stationary, it remains
stationary and you do not need to depress the
brake.
i
After a time, the electric parking brake
secures the vehicle and relieves the service
brake.
i
Depending on the specified minimum dis-
tance, your vehicle will come to a standstill
at a sufficient distance behind the vehicle in
front. The specified minimum distance is
set using the control on the cruise control
lever.
The electric parking brake automatically
secures the vehicle if DISTRONIC PLUS is
activated and:
R
the seat belt is unfastened and the driver's
door is open.
R
the engine is switched off, unless it is auto-
matically switched off by the ECO start/
stop function.
R
a system malfunction occurs.
R
the power supply is not sufficient.
If a malfunction occurs, then the transmission
may be shifted into position P automatically.
Setting a speed
Keep in mind that it may take a brief moment
until the vehicle has accelerated or braked to
the speed set.
Driving systems
177
Driving and parking
Z
:
To store the current speed or a higher
speed
;
To store the current speed or a lower
speed
X
Press the cruise control lever up : for a
higher speed or down ; for a lower speed.
X
To adjust the set speed in 1 mph incre-
ments (1 km/h increments): briefly
press the cruise control lever up : or
down ; to the pressure point.
Every time the cruise control lever is
pressed up : or down ; the last speed
stored is increased or reduced.
X
To adjust the set speed in 5 mph incre-
ments (10 km/h increments): briefly
press the cruise control lever up : or
down ; to the pressure point.
Every time the cruise control lever is
pressed up : or down ;, the last speed
stored is increased or reduced.
i
DISTRONIC PLUS is not deactivated if you
depress the accelerator pedal. If you accel-
erate to overtake, DISTRONIC PLUS
adjusts the vehicle's speed to the last
speed stored after you have finished over-
taking.
Setting the specified minimum distance
You can set the specified minimum distance
for DISTRONIC PLUS by varying the time span
between one and two seconds. With this func-
tion, you can set the minimum distance that
DISTRONIC PLUS keeps to the vehicle in
front, dependent on vehicle speed. You can
see this distance in the multifunction display
(Y page 179).
i
Make sure that you maintain the mini-
mum distance to the vehicle in front as
required by law. Adjust the distance to the
vehicle in front if necessary.
X
To increase: turn control = in direc-
tion ;.
DISTRONIC PLUS then maintains a greater
distance between your vehicle and the
vehicle in front.
X
To decrease: turn control = in direc-
tion :.
DISTRONIC PLUS then maintains a shorter
distance between your vehicle and the
vehicle in front.
Deactivating DISTRONIC PLUS
178
Driving systems
Driving and parking
There are several ways to deactivate DIS-
TRONIC PLUS:
X
Briefly press the cruise control lever for-
wards :.
or
X
Brake, unless the vehicle is stationary.
When you deactivate DISTRONIC PLUS, you
will see the
DISTRONICDISTRONIC PLUSPLUS OffOff message in
the multifunction display for approximately
five seconds.
i
The last speed stored remains stored until
you switch off the engine. DISTRONIC PLUS
is not deactivated if you depress the accel-
erator pedal.
DISTRONIC PLUS is automatically deactiva-
ted if:
R
you engage the electric parking brake or if
the vehicle is automatically secured with
the electric parking brake
R
ESP
®
intervenes or you deactivate ESP
®
R
the transmission is in the P, R or N position
R
you pull the cruise control lever towards
you in order to pull away and the front-
passenger door or one of the rear doors is
open
R
the vehicle is skidding
R
you activate DSR
R
you activate Active Parking Assist
If DISTRONIC PLUS is deactivated, you will
hear a warning tone. You will see the
DIS‐DIS‐
TRONIC
TRONIC PLUSPLUS OffOff message in the multifunc-
tion display for approximately five seconds.
DISTRONIC PLUS displays in the instru-
ment cluster
Displays in the speedometer
Example: DISTRONIC PLUS displays in the speed-
ometer
When DISTRONIC PLUS is activated, one or
two segments ; in the set speed range light
up.
If DISTRONIC PLUS detects a vehicle in front,
segments ; between speed of the vehicle in
front = and stored speed : light up.
i
For design reasons, the speed displayed
in the speedometer may differ slightly from
the speed set for DISTRONIC PLUS.
Display when DISTRONIC PLUS is deacti-
vated
:
Vehicle in front, if detected
;
Distance indicator, current distance to
the vehicle in front
=
Specified minimum distance to the vehi-
cle in front; adjustable
?
Own vehicle
Driving systems
179
Driving and parking
Z
In the Assistance menu (Y page 213) of the
on-board computer, you can select the assis-
tance display.
X
Select the
Assistance GraphicAssistance Graphic function
using the on-board computer
(Y page 213).
Display when DISTRONIC PLUS is activa-
ted
:
Vehicle in front, if detected
;
Specified minimum distance to the vehi-
cle in front; adjustable
=
Own vehicle
?
DISTRONIC PLUS active (text only
appears when the cruise control lever is
actuated)
X
Select the
Assistance GraphicAssistance Graphic function
using the on-board computer
(Y page 213).
You will initially see the stored speed for
about five seconds when you activate DIS-
TRONIC PLUS.
Tips for driving with DISTRONIC PLUS
General notes
The following contains descriptions of certain
road and traffic conditions in which you must
be particularly attentive. In such situations,
brake if necessary. DISTRONIC PLUS is then
deactivated.
Cornering, going into and coming out of a
bend
The ability of DISTRONIC PLUS to detect vehi-
cles when cornering is limited. Your vehicle
may brake unexpectedly or late.
Vehicles traveling on a different line
DISTRONIC PLUS may not detect vehicles
traveling on a different line. The distance to
the vehicle in front will be too short.
Other vehicles changing lanes
180
Driving systems
Driving and parking
DISTRONIC PLUS has not detected the vehi-
cle cutting in yet. The distance to this vehicle
will be too short.
Narrow vehicles
DISTRONIC PLUS has not yet detected the
vehicle in front on the edge of the road,
because of its narrow width. The distance to
the vehicle in front will be too short.
Obstructions and stationary vehicles
DISTRONIC PLUS does not brake for obsta-
cles or stationary vehicles. If, for example, the
detected vehicle turns a corner and reveals
an obstacle or stationary vehicle, DISTRONIC
PLUS will not brake for these.
Crossing vehicles
DISTRONIC PLUS may detect vehicles that
are crossing your lane by mistake. Activating
DISTRONIC PLUS at traffic lights with cross-
ing traffic, for example, could cause your vehi-
cle to pull away unintentionally.
HOLD function
Important safety notes
G
WARNING
When leaving the vehicle, it can still roll away
despite being braked by the HOLD function if:
R
there is a malfunction in the system or in
the voltage supply.
R
the HOLD function has been deactivated by
pressing the accelerator pedal or the brake
pedal, e.g. by a vehicle occupant.
R
the electrical system in the engine com-
partment, the battery or the fuses have
been tampered with.
R
the battery is disconnected
There is a risk of an accident.
If you wish to exit the vehicle, always turn off
the HOLD function and secure the vehicle
against rolling away.
Driving systems
181
Driving and parking
Z
!
If DISTRONIC PLUS or the HOLD function
is activated, the vehicle brakes automati-
cally in certain situations. To prevent dam-
age to the vehicle, deactivate DISTRONIC
PLUS and the HOLD function in the follow-
ing or other similar situations:
R
when towing the vehicle
R
in the car wash
Deactivating the HOLD function
(Y page 182).
General notes
The HOLD function can assist the driver in the
following situations:
R
when pulling away, especially on steep
slopes
R
when maneuvering on steep slopes
R
when waiting in traffic
The vehicle is kept stationary without the
driver having to depress the brake pedal.
The braking effect is canceled and the HOLD
function deactivated when you depress the
accelerator pedal to pull away.
Activation conditions
You can activate the HOLD function if:
R
the vehicle is stationary
R
the engine is running or if it has been auto-
matically switched off by the ECO start/
stop function
R
the driver's door is closed or your seat belt
is fastened
R
the electric parking brake is released
R
the transmission position D, R or N is
engaged while driving a vehicle with an
automatic transmission
R
DISTRONIC PLUS is deactivated
Activating the HOLD function
Example: vehicles with a color multifunction dis-
play
X
Make sure that the activation conditions
are met.
X
Depress the brake pedal.
X
Quickly depress the brake pedal further
until : appears in the multifunction dis-
play.
The HOLD function is activated. You can
release the brake pedal.
i
If depressing the brake pedal the first
time does not activate the HOLD function,
wait briefly and then try again.
Deactivating the HOLD function
The HOLD function is deactivated automati-
cally if:
R
you accelerate. On vehicles with automatic
transmission: only when the transmission
is in position D or R.
R
the transmission is in position P on vehicles
with automatic transmission.
R
you depress the brake pedal again with a
certain amount of pressure until : disap-
pears from the multifunction display.
R
you secure the vehicle using the electric
parking brake.
R
you activate DISTRONIC PLUS.
i
After a time, the electric parking brake
secures the vehicle and relieves the service
brake.
182
Driving systems
Driving and parking
The electric parking brake automatically
secures the vehicle if the HOLD function is
activated and:
R
the driver's door is open and the driver's
seat belt is unfastened.
R
the engine is switched off, unless it is auto-
matically switched off by the ECO start/
stop function.
R
a system malfunction occurs.
R
the power supply is not sufficient.
On steep uphill or downhill inclines or if there
is a malfunction, the transmission may also
automatically be shifted into position P.
RACE START
Important safety notes
RACE START enables optimal acceleration
from a standing start. The precondition for
this is a suitable high-grip road surface.
RACE START is intended solely for activation
on dedicated race circuits.
i
RACE START is only available in AMG vehi-
cles.
Conditions for activation
You can activate RACE START if:
R
the doors, hood and the tailgate are closed.
R
the engine is running and the transmission,
all-wheel drive clutch and the engine are at
operating temperature.
R
SPORT handling mode is activated.
(Y page 70)
R
the steering wheel is in the straight-ahead
position.
R
the vehicle is stationary and the brake
pedal is depressed (left foot).
R
the transmission is in position D.
R
drive program M is selected (Y page 152).
Activating RACE START
X
Depress the brake pedal with your left foot
and keep it depressed.
X
Pull and hold both steering wheel shift pad-
dles.
X
The
RACE START Confirm: Paddle UPRACE START Confirm: Paddle UP
Cancel: Paddle DOWN
Cancel: Paddle DOWN message appears
in the multifunction display.
X
Release both steering wheel shift paddles.
i
If the activation conditions are no longer
fulfilled, RACE START is canceled. The
RACE START Not Possible See Opera‐RACE START Not Possible See Opera‐
tor's Manualtor's Manual message appears in the
multifunction display.
X
To cancel: pull the left steering wheel pad-
dle shifter (Y page 153).
or
X
To confirm: pull the right steering wheel
paddle shifter (Y page 153).
The
RACE START Available DepressRACE START Available Depress
gas pedal
gas pedal message appears in the multi-
function display.
i
If you do not depress the accelerator
pedal within a few seconds, RACE START is
canceled. The multifunction display shows
the
RACE START CanceledRACE START Canceled message.
X
Fully depress the accelerator pedal.
The engine speed is increased.
The
RACE START Release brake toRACE START Release brake to
start
start message appears in the multifunc-
tion display.
i
If you do not release the brake pedal
within a short time, RACE START will be
canceled. The multifunction display shows
the
RACE START CanceledRACE START Canceled message.
X
Take your foot off the brake, but keep the
accelerator pedal depressed.
The vehicle pulls away at maximum accel-
eration.
The
RACERACE STARTSTART ActiveActive message appears
in the multifunction display.
RACE START is deactivated when the vehicle
reaches a speed of approximately 30 mph
(Canada: 50 km/h). Drive program S is acti-
Driving systems
183
Driving and parking
Z
vated. SPORT handling mode remains activa-
ted.
RACE START is deactivated immediately if
you release the accelerator pedal during
RACE START or if any of the activation condi-
tions are no longer fulfilled. The
RACERACE STARTSTART
Not Possible
Not Possible or RACE START CanceledRACE START Canceled
message appears in the multifunction dis-
play.
i
If RACE START is used repeatedly within a
short period of time, it is only available
again after the vehicle has been driven a
certain distance.
4MATIC
4MATIC ensures that all four wheels are per-
manently driven. Together with ESP
®
, it
improves the traction of your vehicle when-
ever a drive wheel spins due to insufficient
grip.
If you fail to adapt your driving style, 4MATIC
can neither reduce the risk of accident nor
override the laws of physics. 4MATIC cannot
take account of road, weather and traffic con-
ditions. 4MATIC is only an aid. You are
responsible for the distance to the vehicle in
front, for vehicle speed, for braking in good
time and for staying in your lane.
If a drive wheel spins due to insufficient grip:
R
Only depress the accelerator pedal as far as
necessary when pulling away.
R
Accelerate less when driving.
!
Never tow the vehicle with one axle
raised. This may damage the transfer case.
Damage of this sort is not covered by the
Mercedes-Benz Limited Warranty. All
wheels must remain either on the ground or
be fully raised. Observe the instructions for
towing the vehicle with all wheels in full
contact with the ground.
i
In wintry driving conditions, the maximum
effect of 4MATIC can only be achieved if
you use winter tires (M+S tires), with snow
chains if necessary.
DSR
Important safety notes
i
DSR (Downhill Speed Regulation) is only
available for vehicles with the Off-Road
Engineering package.
DSR is an aid to assist you when driving down-
hill. It keeps the speed of travel at the speed
selected on the on-board computer. The
steeper the downhill gradient, the greater the
DSR braking effect on the vehicle. When driv-
ing on flat stretches of road or on an uphill
gradient, the DSR braking effect is minimal or
nonexistent.
DSR controls the vehicle’s speed when it is
activated and the transmission is in position
D, R or N. You can drive at a higher or a lower
speed than that set on the on-board computer
at any time by accelerating or braking.
If you fail to adapt your driving style, DSR can
neither reduce the risk of accident nor over-
ride the laws of physics. DSR cannot take
account of road, weather and traffic condi-
tions. DSR is only an aid. You are responsible
for the distance to the vehicle in front, for
vehicle speed, for braking in good time and for
staying in your lane.
You are always responsible for keeping con-
trol of the vehicle and for assessing whether
the downhill gradient can be managed. DSR
may not always be able to keep to the set
speed, depending on road surface and tire
conditions. Select a set speed suitable for the
prevailing conditions and when necessary,
apply the brakes manually.
G
WARNING
If the speed driven and the set speed deviate
and you activate DSR on a slippery road sur-
face, the wheels may lose traction. There is an
increased danger of skidding and accidents.
Before switching DSR on, please take into
consideration the road surface and the differ-
ence between driving speed and the set
speed.
184
Driving systems
Driving and parking
Further information about "Driving off-road"
(Y page 168).
Activating/deactivating DSR
If you activate DSR and no speed has been
set, the vehicle decelerates to 3 mph
(6 km/h).
Activating
You can only activate DSR when driving at
speeds below 20 mph (30 km/h).
X
Press button :.
Indicator lamp ; lights up.
The status indicator in the multifunction
display shows, e.g.
DSR 6 km/hDSR 6 km/h.
If the current vehicle speed is too high, the
DSR icon appears in the multifunction dis-
play. You will also see the message:
Max.Max.
Speed 30 km/h
Speed 30 km/h .
If you enter or exit a parking space using
Active Parking Assist, and press button :,
indicator lamp ; flashes. DSR can then not
be switched on.
Deactivating
X
Press button :.
Indicator lamp ; goes out.
DSR symbol appears in the multifunction
display with the
OffOff message.
DSR switches off automatically if you drive
faster than 22 mph (35 km/h). The DSR sym-
bol appears in the multifunction display with
the
OffOff message. You also hear a warning
tone.
Display in the assistance graphic
X
Select the
Assistance GraphicAssistance Graphic function
using the on-board computer
(Y page 213).
When DSR is activated symbol : appears
in the assistance graphics display.
Changing the set speed while the vehi-
cle is in motion
When DSR is activated, you can change the
set speed to a value between 2 mph and
11 mph (Canada: between 4 km/h and
18 km/h) while the vehicle is in motion.
X
To increase or decrease in 1 mph incre-
ments (Canada: 1 km/h increments):
briefly press the cruise control lever to the
pressure point, up : for a higher set speed
or down ; for a lower set speed.
The set value appears in the status indica-
tor of the multifunction display.
Driving systems
185
Driving and parking
Z
Off-road program
General notes
i
The off-road drive program is only availa-
ble on vehicles with the Off-Road Engineer-
ing package.
The off-road program assists you in driving
off-road. The engine's performance charac-
teristics and the gearshifting characteristics
of the automatic transmission are adapted for
this purpose. ABS, ESP
®
and ETS programs
especially adapted to off-road driving are also
activated.
Do not use the off-road program on roads that
are snow-covered or icy or if you have moun-
ted snow chains on your vehicle.
For information about driving off-road, see
(Y page 168).
Switching the off-road program on or off
X
To switch on: press the : button.
Indicator lamp ; lights up.
X
To switch off: press button :.
Indicator lamp ; goes out.
Display in the assistance graphic
X
Select the
Assistance GraphicAssistance Graphic function
using the on-board computer
(Y page 213).
When the off-road program is activated,
symbol : appears in the assistance
graphic display.
PARKTRONIC
Important safety notes
PARKTRONIC is an electronic parking aid with
ultrasonic sensors. It monitors the area
around your vehicle using six sensors in the
front bumper and six sensors in the rear
bumper. PARKTRONIC indicates visually and
audibly the distance between your vehicle
and an object.
PARKTRONIC is only an aid. It is not a replace-
ment for your attention to your immediate
surroundings. You are always responsible for
safe maneuvering, parking and exiting a park-
ing space. When maneuvering, parking or
pulling out of a parking space, make sure that
there are no persons, animals or objects in
the area in which you are maneuvering.
!
When parking, pay particular attention to
objects above or below the sensors, such
as flower pots or trailer drawbars. PARK-
TRONIC does not detect such objects when
they are in the immediate vicinity of the
vehicle. You could damage the vehicle or
the objects.
186
Driving systems
Driving and parking
The sensors may not detect snow and other
objects that absorb ultrasonic waves.
Ultrasonic sources such as an automatic
car wash, the compressed-air brakes on a
truck or a pneumatic drill could cause
PARKTRONIC to malfunction.
PARKTRONIC may not function correctly on
uneven terrain.
PARKTRONIC is activated automatically when
you:
R
switch on the ignition
R
shift the transmission to position D, R or N
R
release the electric parking brake
PARKTRONIC is deactivated at speeds above
11 mph (18 km/h). It is reactivated at lower
speeds.
Range of the sensors
General notes
PARKTRONIC does not take objects into con-
sideration that are:
R
below the detection range, e.g. people, ani-
mals or objects
R
above the detection range, e.g. overhang-
ing loads, truck overhangs or loading ramps
:
Sensors in the front bumper, left-hand
side (example)
Side view
Top view
The sensors must be free from dirt, ice or
slush. They can otherwise not function cor-
rectly. Clean the sensors regularly, taking
care not to scratch or damage them
(Y page 301).
Front sensors
Center Approx. 40 in (approx.
100 cm)
Corners Approx. 24 in (approx.
60 cm)
Rear sensors
Center Approx. 48 in (approx.
120 cm)
Corners Approx. 32 in (approx.
80 cm)
Minimum distance
Center Approx. 8 in (approx.
20 cm)
Corners Approx. 8 in (approx.
20 cm)
Driving systems
187
Driving and parking
Z
If there is an obstacle within this range, the
relevant warning displays light up and a warn-
ing tone sounds. If the distance falls below
the minimum, the distance may no longer be
shown.
Warning displays
The warning displays show the distance
between the sensors and the obstacle. The
warning display for the front area is located
on the dashboard above the center air vents.
The warning display for the rear area is loca-
ted on the headliner in the rear compartment.
Warning display for the front area
:
Segments on the left-hand side of the
vehicle
;
Segments on the right-hand side of the
vehicle
=
Segments showing operational readiness
The warning display for each side of the vehi-
cle is divided into five yellow and two red seg-
ments. PARKTRONIC is operational if yellow
segments showing operational readiness =
light up.
The selected transmission position and the
direction in which the vehicle is rolling deter-
mine which warning display is active when the
engine is running.
Transmission
position
Warning display
D
Front area activated
R, N or the vehicle
is rolling back-
wards
Rear and front areas
activated
P
No areas activated
One or more segments light up as the vehicle
approaches an obstacle, depending on the
vehicle's distance from the obstacle.
From the:
R
sixth segment onwards, you will hear an
intermittent warning tone for approx-
imately two seconds.
R
seventh segment onwards, you will hear a
warning tone for approximately two sec-
onds. This indicates that you have now
reached the minimum distance.
Deactivating/activating PARKTRONIC
:
Indicator lamp
;
To deactivate/activate PARKTRONIC
If indicator lamp : lights up, PARKTRONIC is
deactivated.
i
PARKTRONIC is automatically activated
when you turn the SmartKey to position 2 in
the ignition lock.
188
Driving systems
Driving and parking
Problems with PARKTRONIC
Problem
Possible causes/consequences and MM Solutions
Only the red segments
in the PARKTRONIC
warning displays are lit.
You also hear a warning
tone for approximately
two seconds.
PARKTRONIC is then
deactivated and the
indicator lamp on the
PARKTRONIC button
lights up.
PARKTRONIC has malfunctioned and has switched off.
X
If problems persist, have PARKTRONIC checked at a qualified
specialist workshop.
Only the red segments
in the PARKTRONIC
warning displays are lit.
PARKTRONIC is then
deactivated.
The PARKTRONIC sensors are dirty or there is interference.
X
Clean the PARKTRONIC sensors (Y page 301).
X
Switch the ignition back on.
The problem may be caused by an external source of radio or
ultrasound waves.
X
See if PARKTRONIC functions in a different location.
Active Parking Assist
General notes
Active Parking Assist is an electronic parking
aid with ultrasound. It measures the road on
both sides of the vehicle. A parking symbol
indicates a suitable parking space. Active
steering intervention and brake application
can assist you during parking and when exit-
ing a parking space. You may also use PARK-
TRONIC (Y page 186).
Important safety notes
Active Parking Assist is merely an aid. It is not
a replacement for your attention to your
immediate surroundings. You are always
responsible for safe maneuvering, parking
and exiting a parking space. Make sure that
no persons, animals or objects are in the
maneuvering range.
When PARKTRONIC is switched off, Active
Parking Assist is also unavailable.
G
WARNING
While parking or pulling out of a parking
space, the vehicle swings out and can drive
onto areas of the oncoming lane. This could
result in a collision with another road user.
There is a risk of an accident.
Pay attention to other road users. Stop the
vehicle if necessary or cancel the Active Park-
ing Assist parking procedure.
!
If unavoidable, you should drive over
obstacles such as curbs slowly and not at a
sharp angle. Otherwise, you may damage
the wheels or tires.
Active Parking Assist may possibly indicate
parking spaces which are not suitable for
parking, for example:
R
where parking or stopping is prohibited
R
in front of driveways or entrances and exits
R
on unsuitable surfaces
Driving systems
189
Driving and parking
Z
Parking tips:
R
On narrow roads, drive as close to the park-
ing space as possible.
R
Parking spaces that are littered or over-
grown might be identified or measured
incorrectly.
R
Parking spaces that are partially occupied
by trailer drawbars might not be identified
as such or be measured incorrectly.
R
Snowfall or heavy rain may lead to a parking
space being measured inaccurately.
R
Pay attention to the PARKTRONIC
(Y page 188) warning messages during the
parking procedure.
R
You can intervene in the steering procedure
to correct it at any time. Active Parking
Assist will then be canceled.
R
When transporting a load which protrudes
from your vehicle, you should not use
Active Parking Assist.
R
Never use Active Parking Assist when snow
chains are installed.
R
Make sure that the tire pressures are
always correct. This has a direct influence
on the parking characteristics of the vehi-
cle.
Use Active Parking Assist for parking spaces:
R
parallel or at right angles to the direction of
travel
R
that are on straight roads, not bends
R
that are on the same level as the road, e.g.
not on the pavement
Detecting parking spaces
Objects located above the height range of
Active Parking Assist will not be detected
when the parking space is measured. These
are not taken into account when the parking
procedure is calculated, e.g. overhanging
loads, tail sections or loading ramps of goods
vehicles.
G
WARNING
If there are objects above the detection range,
Active Parking Assist may turn prematurely.
You may cause a collision as a result. There is
a risk of an accident.
If there are objects above the detection range,
stop and deactivate Active Parking Assist.
For further information on the detection
range (Y page 187).
Active Parking Assist does not assist you
parking in spaces at right angles to the direc-
tion of travel if:
R
two parking spaces are located directly
next to one another
R
the parking space is directly next to a low
obstacle such as a low curb
R
you park forwards
Active Parking Assist does not assist you
parking in spaces that are parallel or at right
angles to the direction of travel if:
R
the parking space is on a curb
R
the parking space is apparently blocked,
for example by foliage or grass paving
blocks
R
the range of movement is too small
R
the parking space is bordered by an obsta-
cle which is not clearly defined such as a
tree or a trailer
:
Detected parking space on the left
;
Parking symbol
=
Detected parking space on the right
Active Parking Assist is automatically activa-
ted when driving forwards. The system is
operational at speeds of up to approximately
22 mph (35 km/h). While in operation, the
190
Driving systems
Driving and parking
system independently locates and measures
parking spaces on both sides of the vehicle.
Active Parking Assist will only detect parking
spaces:
R
parallel or at right angles to the direction of
travel
R
that are parallel to the direction of travel
and at least 59 in (1.5 m) wide
R
that are parallel to the direction of travel
and at least 39.5 in (1.0 m) longer than your
vehicle
R
that are at right angles to the direction of
travel and at least 39.5 in (1.0 m) wider
than your vehicle
i
In the case of parking spaces that are at
right angles to the direction of travel,
please ensure that the parking space is
long enough to accommodate your vehicle.
When driving at speeds below 19 mph
(30 km/h), you will see the parking symbol as
a status indicator in the instrument cluster.
When a parking space has been detected, an
arrow towards the right or the left also
appears. By default, Active Parking Assist
only displays parking spaces on the front-
passenger side. Parking spaces on the driv-
er's side are displayed as soon as the turn
signal on the driver's side is activated. When
parking on the driver's side, this must remain
switched on until you acknowledge the use of
Active Parking Assist by pressing the a
button on the multifunction steering wheel.
The system automatically determines
whether the parking space is parallel or at
right angles to the direction of travel.
A parking space is displayed while you are
driving past it, and until you are approx-
imately 50 ft (15 m) away from it.
Parking
G
WARNING
If you leave the vehicle when it is only being
braked by Active Parking Assist it could roll
away if:
R
there is a malfunction in the system or in
the voltage supply.
R
the electrical system in the engine com-
partment, the battery or the fuses have
been tampered with.
R
the battery is disconnected.
R
the accelerator pedal has been depressed,
e.g. by a vehicle occupant.
There is a risk of an accident.
Before leaving the vehicle, always secure it
against rolling away.
i
Vehicles with automatic transmission: if
PARKTRONIC detects obstacles, Active
Parking Assist brakes automatically during
the parking process. You are responsible
for braking in good time.
X
Stop the vehicle when the parking space
symbol shows the desired parking space in
the instrument cluster.
X
Shift the transmission to position R.
The
Start Park Assist? Yes: OK No:Start Park Assist? Yes: OK No:
% message appears in the multifunction
display.
X
To cancel the procedure: press the %
button on the multifunction steering wheel
or pull away.
or
X
To park using Active Parking Assist:
press the a button on the multifunction
steering wheel.
The
Park Assist Active AcceleratePark Assist Active Accelerate
and
and BrakeBrake ObserveObserve SurroundingsSurroundings mes-
sage appears in the multifunction display.
X
Let go of the multifunction steering wheel.
X
Back up the vehicle, being ready to brake at
all times. Do not exceed a maximum speed
of approximately 5 mph (10 km/h) when
Driving systems
191
Driving and parking
Z
backing up. Otherwise Active Parking
Assist will be canceled.
Active Parking Assist brakes the vehicle to
a standstill when the vehicle approaches
the rear border of the parking space.
Maneuvering may be required in tight park-
ing spaces.
The
Park Assist Active Select DPark Assist Active Select D
Observe
Observe SurroundingsSurroundings message appears in
the multifunction display.
X
Shift the transmission to position D while
the vehicle is stationary.
Active Parking Assist immediately steers in
the other direction.
The
Park Assist Active AcceleratePark Assist Active Accelerate
and
and BrakeBrake ObserveObserve SurroundingsSurroundings mes-
sage appears in the multifunction display.
i
You will achieve the best results by wait-
ing for the steering procedure to complete
before pulling away.
X
Drive forwards and be ready to brake at all
times.
Active Parking Assist brakes the vehicle to
a standstill.
The
Park Assist Active Select RPark Assist Active Select R
Observe
Observe SurroundingsSurroundings message appears in
the multifunction display.
As soon as the parking procedure is com-
plete, the
Park Assist FinishedPark Assist Finished message
appears and a warning tone sounds. The vehi-
cle is now parked. The vehicle is kept station-
ary without the driver having to depress the
brake pedal. The braking effect is canceled
when you depress the accelerator pedal.
Active Parking Assist no longer supports you
with steering interventions and brake appli-
cations. When Active Parking Assist is fin-
ished, you must steer and brake again your-
self. PARKTRONIC is still available.
X
Maneuver if necessary.
X
Always observe the warning messages dis-
played by PARKTRONIC (Y page 188).
Parking tips:
R
The way your vehicle is positioned in the
parking space after parking is dependent
on various factors. These include the posi-
tion and shape of the vehicles parked in
front and behind it and the conditions of the
location. It may be the case that Active
Parking Assist guides you too far into a
parking space, or not far enough into it. In
some cases, it may also lead you across or
onto the curb. If necessary, you should can-
cel the parking procedure with Active Park-
ing Assist.
R
You can also engage forward gear prema-
turely. The vehicle redirects and does not
drive as far into the parking space. Should a
gear be changed too early, the parking pro-
cedure will be canceled. A sensible parking
position can no longer be achieved from
this position.
Exiting a parking space
In order that Active Parking Assist can sup-
port you when you exit the parking space:
R
the border of the parking space must be
high enough. A curb is too small, for exam-
ple.
R
the border of the parking space must not be
too wide, as the position of the vehicle must
not exceed an angle of 45° to the starting
position as it is maneuvering into the park-
ing space.
R
a maneuvering distance of at least 3.3 ft
(1.0 m) must be available.
i
Vehicles with automatic transmission:
If PARKTRONIC detects obstacles, Active
Parking Assist brakes automatically whilst
the vehicle exits the parking space. You are
responsible for braking in good time.
Active Parking Assist can only assist you with
exiting a parking space if you have parked the
vehicle parallel to the direction of travel using
Active Parking Assist.
192
Driving systems
Driving and parking
X
Start the engine.
X
Switch on the turn signal in the direction
you are pulling away.
X
Shift the transmission to position D or R.
The
Start Park Assist? Yes: OK No:Start Park Assist? Yes: OK No:
% message appears in the multifunction
display.
X
To cancel the procedure: press the %
button on the multifunction steering wheel
or pull away.
or
X
To exit a parking space using Active
Parking Assist: press the a button on
the multifunction steering wheel.
The
Park Assist Active AcceleratePark Assist Active Accelerate
and
and BrakeBrake ObserveObserve SurroundingsSurroundings mes-
sage appears in the multifunction display.
X
Let go of the multifunction steering wheel.
X
Reverse the vehicle or drive forwards, being
ready to brake at all times. Do not exceed a
maximum speed of approximately 6 mph
(10 km/h) when exiting a parking space.
Otherwise Active Parking Assist will be can-
celed.
X
Shift the transmission to position D or R as
required while the vehicle is stationary.
Active Parking Assist immediately steers in
the other direction. The
Park AssistPark Assist
Active Accelerate and Brake
Active Accelerate and Brake
ObserveObserve SurroundingsSurroundings message appears
in the multifunction display.
i
You will achieve the best results by wait-
ing for the steering procedure to complete
before pulling away.
If you back up after activation, the steering
wheel is moved to the straight-ahead posi-
tion.
X
Drive forwards and back up as prompted by
the PARKTRONIC warning displays, several
times if necessary.
Once you have exited the parking space com-
pletely, the steering wheel is moved to the
straight-ahead position. You hear a tone and
the
Park Assist FinishedPark Assist Finished message
appears in the multifunction display. You will
then have to steer and merge into traffic on
your own. PARKTRONIC is still available. You
can take over the steering, before the vehicle
has exited the parking space completely. This
is useful, for example when you recognize
that it is already possible to pull out of the
parking space.
Canceling Active Parking Assist
You can cancel Active Parking Assist at any
time.
X
Stop the movement of the multifunction
steering wheel or steer yourself.
Active Parking Assist will be canceled at
once. The
Park Assist CanceledPark Assist Canceled mes-
sage appears in the multifunction display.
or
X
Press the PARKTRONIC button on the cen-
ter console (Y page 188).
PARKTRONIC is switched off and Active
Parking Assist is immediately canceled.
The
Park Assist CanceledPark Assist Canceled message
appears in the multifunction display.
Active Parking Assist is canceled automati-
cally if:
R
the electric parking brake is engaged
R
transmission position P is selected
R
parking using Active Parking Assist is no
longer possible
R
you are driving faster than 6 mph (10 km/h)
R
a wheel spins, ESP
®
intervenes or fails. The
÷ warning lamp lights up in the instru-
ment cluster.
A warning tone sounds. The parking symbol
disappears and the multifunction display
shows the
Park Assist CanceledPark Assist Canceled mes-
sage.
If Active Parking Assist is canceled, you must
steer again yourself.
If a system malfunction occurs, the vehicle is
braked to a standstill. To drive on, depress the
accelerator again.
Driving systems
193
Driving and parking
Z
Rear view camera
General notes
Rear view camera : is in the handle on the
tailgate.
The rear view camera is an optical parking and
maneuvering aid. It uses guide lines to show
the area behind your vehicle in the Audio/
COMAND display.
The area behind the vehicle is displayed as a
mirror image, as in the rear view mirror.
The rear view camera is protected from rain-
drops and dust by means of a flap. When the
rear view camera is activated, this flap opens.
Only once the maneuvering process has been
completed and the rear view camera has
switched off does the flap close again. For
technical reasons, the flap may remain open
briefly after the rear view camera has been
deactivated. If you switch off the engine, the
flap will also close.
i
The text of messages shown in the
COMAND display depends on the language
setting. The following are examples of rear
view camera messages in the COMAND
display.
Observe the notes on cleaning (Y page 302).
Important safety notes
The rear view camera is only an aid. It is not a
replacement for your attention to your imme-
diate surroundings. You are always responsi-
ble for safe maneuvering and parking. When
maneuvering or parking, make sure that there
are no persons, animals or objects in the area
in which you are maneuvering.
Under the following circumstances, the rear
view camera will not function, or will function
in a limited manner:
R
the tailgate is open
R
in heavy rain, snow or fog
R
at night or in very dark places
R
if the camera is exposed to very bright light
R
if the area is lit by fluorescent light or LED
lighting (the display may flicker)
R
if there is a sudden change in temperature,
e.g. when driving into a heated garage in
winter
R
if the camera lens is dirty or obstructed
R
if the rear of your vehicle is damaged. In this
event, have the camera position and setting
checked at a qualified specialist workshop
The field of vision and other functions of the
rear view camera may be restricted due to
additional accessories on the rear of the vehi-
cle (e.g. license plate holder, bicycle rack).
Activating/deactivating the rear view
camera
X
To activate: make sure that the SmartKey
is in position 2 in the ignition lock.
X
Make sure that the "Activation by R gear"
function is selected in the Audio system/
COMAND; see the separate operating
instructions.
X
Engage reverse gear.
Guide lines are used to show the area
behind the vehicle in the Audio/COMAND
display.
To deactivate: the rear view camera deacti-
vates if you shift the transmission to P on
vehicles with automatic transmission or after
driving forwards a short distance.
194
Driving systems
Driving and parking
Displays in the Audio/COMAND display
The rear view camera may show a distorted
view of obstacles, show them incorrectly or
not at all. The rear view camera does not show
objects in the following positions:
R
very close to the rear bumper
R
under the rear bumper
R
in the area immediately above the tailgate
handle
!
Objects not at ground level may appear to
be further away than they actually are, e.g.:
R
the bumper of a parked vehicle
R
the drawbar of a trailer
R
the ball coupling of a trailer tow hitch
R
the rear section of an HGV
R
a slanted post
Use the guidelines only for orientation.
Approach objects no further than the bot-
tom-most guideline.
Lanes
:
White guide line without turning the steer-
ing wheel, vehicle width including the
exterior mirrors (static)
;
Yellow lane marking tires at current steer-
ing wheel angle, vehicle width to the outer
side of the wheels (dynamic)
=
Red guide line for the vehicle width includ-
ing the exterior mirrors, for current steer-
ing wheel angle (dynamic)
?
Bumper
Guide lines
?
Bumper
A
Red guide line at a distance of approx-
imately 10 in (0.25 m) from the rear of the
vehicle
B
Yellow guide line at a distance of approx-
imately 13 ft (4.0 m) from the rear of the
vehicle
C
Vehicle center axle (marker assistance)
D
Yellow guide line at a distance of approx-
imately 3 ft (1.0 m) from the rear of the
vehicle
The lanes and guide lines are only displayed if
you have engaged reverse gear.
The distance specifications only apply to
objects that are at ground level.
Additional displays on vehicles with PARKTRONIC
and COMAND
:
Front warning display
;
Additional PARKTRONIC measurement
operational readiness indicator
=
Rear warning display
Vehicles with PARKTRONIC and COMAND:
if PARKTRONIC is operational (Y page 186),
Driving systems
195
Driving and parking
Z
an additional operational readiness indicator
will appear in COMAND display ;.If the
PARKTRONIC warning displays are active or
light up, warning displays : and = are also
active or light up correspondingly in the
COMAND display.
"Reverse parking" function
X
Make sure that the rear view camera is
activated and the "Reverse parking" func-
tion is selected; see the separate operating
instructions for the audio system/
COMAND.
The lane and the guide lines are shown.
Backing up straight into a parking space
without turning the steering wheel
:
White lane with steering wheel straight
;
Yellow guide line at a distance of approx-
imately 3 ft (1.0 m) from the rear of the
vehicle
=
Red guide line at a distance of approx-
imately 10 in (0.25 m) from the rear of the
vehicle
X
With the help of white lane :, check
whether the vehicle will fit into the parking
space.
X
Using the white lane as a guide, carefully
back up until you reach the end position.
Red guide line = is then at the end of the
parking space. The vehicle is almost paral-
lel in the parking space.
Reverse perpendicular parking with the
steering wheel at an angle
X
Drive past the parking space and bring the
vehicle to a standstill.
Turning the steering wheel
:
Red lane indicating the route the vehicle
will take with the steering wheel in its cur-
rent position
;
Parking space marking
X
While the vehicle is at a standstill, turn the
steering wheel in the direction of the park-
ing space until the red lane reaches parking
space marking ;.
X
Keep the steering wheel in that position
and back up carefully.
Backing up with the steering wheel turned
:
Red lane indicating the route the vehicle
will take with the steering wheel in its cur-
rent position
196
Driving systems
Driving and parking
X
Stop the vehicle when it is almost exactly in
front of the parking space.
The white lane should be as close to parallel
with the parking space marking as possi-
ble.
Driving to the final position
:
White lane at current steering wheel angle
;
Parking space marking
X
Turn the steering wheel to the center posi-
tion while the vehicle is stationary.
:
Red guide line at a distance of approx-
imately 10 in (0.25 m) from the rear of the
vehicle
;
White lane with steering wheel straight
=
End of parking space
X
Back up carefully until you have reached
the final position.
Red guide line : is then at end of parking
space =. The vehicle is almost parallel in
the parking space.
ATTENTION ASSIST
General notes
ATTENTION ASSIST helps you during long,
monotonous journeys, such as on highways.
It is active in the range between 50 mph
(80 km/h) and 112 mph (180 km/h).
If ATTENTION ASSIST detects typical indica-
tors of fatigue or increasing lapses in con-
centration on the part of the driver, it sug-
gests you take a break.
Important safety notes
ATTENTION ASSIST is only an aid to the
driver. It might not always recognize fatigue
or increasing inattentiveness in time or fail to
recognize them at all. The system is not a
substitute for a well-rested and attentive
driver.
ATTENTION ASSIST assesses your level of
fatigue or lapses in concentration by taking
the following criteria into account:
R
your personal driving style, e.g. steering
characteristics
R
journey details, e.g. time of day and length
of journey
The functionality of ATTENTION ASSIST is
restricted and warnings may be delayed or
not occur at all:
R
if the road condition is poor, e.g. if the sur-
face is uneven or if there are potholes
R
if there is a strong side wind
R
if you have adopted a sporty driving style
with high cornering speeds or high rates of
acceleration
R
if you are predominantly driving slower
than 50 mph (80 km/h) or faster than
112 mph (180 km/h)
R
if you are currently using COMAND or mak-
ing a telephone call with it
R
if the time has been set incorrectly
R
in active driving situations, such as when
you change lanes or change your speed
Driving systems
197
Driving and parking
Z
Warning and display messages in the
multifunction display
X
Activate ATTENTION ASSIST using the on-
board computer (Y page 214).
If ATTENTION ASSIST is active, you will be
warned no sooner than 20 minutes after
your journey has begun. You then hear an
intermittent warning tone twice and the
Attention Assist: Take a Break!Attention Assist: Take a Break!
message appears in the multifunction dis-
play.
X
If necessary, take a break.
X
Press the a or % button to confirm
the message.
On long journeys, take regular breaks in good
time to allow yourself to rest properly. If you
do not take a break, you will be warned again
after 15 minutes at the earliest. The precon-
dition for this is that ATTENTION ASSIST still
detects typical indicators of fatigue or
increasing lapses in concentration.
ATTENTION ASSIST is reset when you con-
tinue your journey and starts assessing your
tiredness again if:
R
you switch off the engine.
R
you take off your seat belt and open the
driver's door, e.g. for a change of drivers or
to take a break
When ATTENTION ASSIST is deactivated, the
é symbol appears in the multifunction
display in the assistance graphic display.
Lane Tracking package
General notes
The Lane Tracking package consists of Blind
Spot Assist (Y page 198) and Lane Keeping
Assist (Y page 200).
Blind Spot Assist
General notes
Blind Spot Assist uses a radar sensor system
to monitor the areas on both sides of your
vehicle. It supports you from a speed of
approximately 20 mph (30 km/h). A warning
display in the exterior mirrors draws your
attention to vehicles detected in the moni-
tored area. If you then switch on the corre-
sponding turn signal to change lanes, you will
also receive a visual and audible collision
warning. For this purpose, Blind Spot Assist
uses sensors in the rear bumper.
Important safety notes
G
WARNING
Blind Spot Assist does not react to:
R
vehicles overtaken too closely on the side,
placing them in the blind spot area
R
vehicles which approach with a large speed
differential and overtake your vehicle
As a result, Blind Spot Assist may not give
warnings in such situations. There is a risk of
an accident.
Always observe the traffic conditions care-
fully, and maintain a safe lateral distance.
Blind Spot Assist is only an aid. It may fail to
detect some vehicles and is no substitute for
attentive driving.
i
USA only:
This device has been approved by the FCC
as a "Vehicular Radar System". The radar
sensor is intended for use in an automotive
radar system only. Removing, tampering
with, or altering the device will void any
warranties, and is not permitted by the
FCC. Do not tamper with, alter, or use in
any non-approved way.
Any unauthorized modification to this
device could void the user’s authority to
operate the equipment.
198
Driving systems
Driving and parking
Monitoring range of the sensors
In particular, the detection of obstacles can
be impaired if:
R
dirt on the sensors or anything else cover-
ing the sensors
R
there is poor visibility, e.g. due to fog, heavy
rain or snow
R
a narrow vehicle traveling in front, e.g. a
motorbike or bicycle
R
the road has very wide lanes
R
the road has narrow lanes
R
you are not driving in the middle of the lane
R
there are barriers or similar lane borders
Vehicles in the monitoring range are then not
indicated.
Blind Spot Assist monitors the area up to 10 ft
(3.0 m) behind your vehicle and directly next
to your vehicle, as shown in the diagram. For
this purpose, Blind Spot Assist uses radar
sensors in the rear bumper.
If the lanes are narrow, vehicles driving in the
lane beyond the lane next to your vehicle may
be indicated, especially if the vehicles are not
driving in the middle of their lane. This may be
the case if the vehicles are driving on the inner
side of their lane.
Due to the nature of the system:
R
warnings may be issued in error when driv-
ing close to crash barriers or similar solid
lane borders.
R
warnings may be interrupted when driving
alongside particularly long vehicles, e.g.
trucks, for a prolonged time.
The two sensors for Blind Spot Assist are
integrated into the sides of the rear bumper.
Make sure that the bumper is free of dirt, ice
or slush in the vicinity of the sensors. For
example, the radar sensors must not be cov-
ered by bicycle racks or overhanging loads.
Following a severe impact or in the event of
damage to the bumpers, have the function of
the radar sensors checked at a qualified spe-
cialist workshop. Blind Spot Assist may oth-
erwise not work properly.
Indicator and warning display
Blind Spot Assist is not active at speeds below
approximately 20 mph (30 km/h). Vehicles in
the monitoring range are then not indicated.
:
Yellow indicator lamp/red warning lamp
When Blind Spot Assist is activated, indicator
lamp : in the exterior mirrors lights up yel-
low at speeds of up to 20 mph (30 km/h). At
speeds above 20 mph (30 km/h), the indica-
tor lamp goes out and Blind Spot Assist is
operational.
If a vehicle is detected within the monitoring
range of Blind Spot Assist at speeds above
20 mph (30 km/h), then warning lamp : on
the corresponding side lights up red. This
warning is always emitted when a vehicle
Driving systems
199
Driving and parking
Z
enters the blind spot monitoring range from
behind or from the side. When you overtake a
vehicle, the warning only occurs if the differ-
ence in speed is less than 7 mph (12 km/h).
The yellow indicator lamp goes out if reverse
gear is engaged. In this event, Blind Spot
Assist is no longer active.
The brightness of the indicator/warning
lamps is adjusted automatically according to
the ambient light.
Collision warning
If a vehicle is detected in the monitoring range
of Blind Spot Assist and you switch on the
corresponding turn signal, a double warning
tone sounds. Red warning lamp : flashes. If
the turn signal remains on, vehicles detected
are indicated by the flashing of red warning
lamp :. There are no further warning tones.
Switching on Blind Spot Assist
X
Make sure that Blind Spot Assist is activa-
ted in the on-board computer
(Y page 214).
X
Turn the SmartKey to position 2 in the igni-
tion lock.
Warning lamps : in the exterior mirrors
light up red for approximately 1.5 seconds
and then turn yellow.
Lane Keeping Assist
General notes
Lane Keeping Assist monitors the area in
front of your vehicle with camera :, which is
mounted at the top of the windshield. Active
Lane Keeping Assist detects lane markings on
the road and can warn you before you leave
your lane unintentionally.
This function is available in the range between
40 mph and 120 mph (60 km/h and
200 km/h).
A warning may be given if a front wheel
passes over a lane marking. It will warn you by
means of intermittent vibration in the steer-
ing wheel for up to 1.5 seconds.
Important safety notes
G
WARNING
Lane Keeping Assist may not always clearly
recognize lane markings.
In this case, Lane Keeping Assist may:
R
give an unnecessary warning
R
not give a warning
There is a risk of an accident.
Always pay particular attention to the traffic
situation and stay in lane, in particular if
warned by Lane Keeping Assist.
G
WARNING
The Lane Keeping Assist warning does not
return the vehicle to the original lane. There is
a risk of an accident.
You should always steer, brake or accelerate
yourself, in particular if warned by Lane Keep-
ing Assist.
If you fail to adapt your driving style, Lane
Keeping Assist can neither reduce the risk of
an accident nor override the laws of physics.
Lane Keeping Assist cannot take into account
the road, traffic and weather conditions. Lane
Keeping Assist is merely an aid. You are
responsible for the distance to the vehicle in
front, for vehicle speed, for braking in good
time and for staying in your lane.
The Lane Keeping Assist does not keep the
vehicle in the lane.
200
Driving systems
Driving and parking
The system may be impaired or may not func-
tion if:
R
there is poor visibility, e.g. due to insuffi-
cient illumination of the road, or due to
snow, rain, fog or spray
R
there is glare, e.g. from oncoming traffic,
the sun or reflections (e.g. when the road
surface is wet)
R
the windshield is dirty, fogged up, damaged
or covered, for instance by a sticker, in the
vicinity of the camera
R
there are no, several or unclear lane mark-
ings for a lane, e.g. in areas with road con-
struction work
R
the lane markings are worn away, dark or
covered up, e.g. by dirt or snow
R
the distance to the vehicle in front is too
small and the lane markings thus cannot be
detected
R
the lane markings change quickly, e.g.
lanes branch off, cross one another or
merge
R
the road is narrow and winding
R
there are strong shadows cast on the lane
Switching on Lane Keeping Assist
X
Switch on Active Lane Keeping Assist using
the on-board computer; to do so, select
StandardStandard or AdaptiveAdaptive (Y page 214).
If you drive at speeds above 40 mph
(60 km/h) and lane markings are detected,
the lane markings in the assistance graph-
ics display (Y page 213) are shown in
green.
When Standard is selected, no warning vibra-
tion occurs if:
R
you switch on the turn signals. In this event,
the warnings are suppressed for a certain
period of time.
R
a driving safety system intervenes, such as
ABS, BAS or ESP
®
.
When Adaptive is selected, no warning vibra-
tion occurs if:
R
you switch on the turn signals. In this event,
the warnings are suppressed for a certain
period of time.
R
a driving safety system intervenes, e.g.
ABS, BAS or ESP
®
.
R
you accelerate hard, e.g. kickdown.
R
you brake hard.
R
you steer actively, e.g. swerve to avoid an
obstacle or change lanes quickly.
R
you cut the corner on a sharp bend.
In order that you are warned only when nec-
essary and in good time if you cross the lane
marking, the system recognizes certain con-
ditions and warns you accordingly.
The warning vibration occurs earlier if:
R
you approach the outer lane marking on a
bend.
R
the road has very wide lanes, e.g. a free-
way.
R
the system recognizes solid lane markings.
The warning vibration occurs later if:
R
the road has narrow lanes.
R
you cut the corner on a bend.
Driving systems
201
Driving and parking
Z
202

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