2018-2026 Mercedes B Class SUV Driving and parking -> Driving User Manual
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Driving and parking -> Driving for Your Mercedes B Class SUV Third Generation (2018-2026)

Driving
Notes on plug-in hybrids
▌Notes on plug-in hybrid operation
&
WARNING Risk of chemical burns and poi-
soning from damaged high-voltage battery
If the housing of the high-voltage battery has
been damaged, electrolyte and gases may
leak out.
#
Avoid contact with the skin, eyes or
clothing.
#
Immediately rinse electrolyte splashes
o with water and seek medical atten-
tion straight away.
&
DANGER Risk of re and explosion from
excessive internal pressure of the high-
voltage battery
In the event of a vehicle re, ammable gas
can escape and ignite.
#
Stop the charging process immediately
in case of unusual odours, smoke or
burn marks.
#
Leave the danger zone immediately.
Secure the danger zone at a sucient
distance.
#
Call the re service.
The hybrid system combines a combustion engine
with an electric motor.
Characteristics when the vehicle is at a standstill:
R
The combustion engine is generally switched
o.
R
Idle speed occurs only in certain instances.
Characteristics when starting the vehicle:
R
If the high-voltage battery is suciently
charged, the vehicle can be started with the
electric drive without the combustion engine
(noiseless start).
R
If the high-voltage battery for the electric drive
is not suciently charged or the vehicle condi-
tions for a silent start are not met, the vehicle
will start with the combustion engine.
%
Depending on the system, it may be that even
though the high-voltage battery is charged,
electric mode has restricted or no availability.
When the combustion engine has run for long
enough and the ambient conditions permit,
electric mode will be available without restric-
tion once more.
%
To start the combustion engine, the high-volt-
age battery can be used as a starter battery.
Characteristics with moderate power output
requests:
R
The combustion engine is switched o as
oen as possible during a journey.
R
Depending on the drive program selected and
the state of charge of the high-voltage battery,
the vehicle can be accelerated electrically up
to a speed of approximately 140 km/h.
Characteristics with high power output requests:
R
The electric motor supports the combustion
engine (boost eect), e.g. when pulling away
or accelerating.
Driving and parking
243
F247 0072 02
R
The high-voltage battery is discharging.
Characteristics when releasing the accelerator
pedal during a journey:
R
The electric motor is operated as an alternator
when in overrun mode and during braking.
R
The high-voltage battery is charging.
Notes on electric mode:
R
Vehicles with hybrid systems generate signi-
cantly less noise when stationary and when
being driven than vehicles with combustion
engines.
R
In electric mode, the vehicle may not be heard
by other road users due to the signicantly
reduced noise generated.
It is for this reason that the vehicle is equip-
ped with a sound generator, which serves as
an acoustic vehicle alerting system (AVAS).
This safety system is prescribed by law.
The external noise produced by the sound
generator is perceptible in the vehicle interior
at low speeds and does not constitute a mal-
function.
R
If not all of the vehicle conditions for electric
mode are met, then the combustion engine is
switched on.
R
Performance restrictions in electric mode are
possible as a result of the operating tempera-
ture of the high-voltage battery and drive sys-
tem, the ambient temperature and ageing of
the high-voltage battery.
R
In electric mode, the maximum power will not
be permanently available and may drop to
continuous output.
Notes on the acoustic vehicle alerting system:
R
The sound generator produces speed-depend-
ent driving noises up to a speed of approx-
imately 30 km/h when driving forwards and
reversing.
R
This helps other road users, particularly
pedestrians and cyclists, to hear your vehicle
better.
R
From a speed of 20 km/h, the acoustic vehi-
cle alerting system gradually switches o.
R
The sound generator is o when the vehicle is
stationary.
▌Manually disconnecting the high-voltage on-
board electrical system
&
DANGER Risk of death and re due to
modied and/or damaged components of
the high-voltage on-board electrical sys-
tem
The vehicle's high-voltage on-board electrical
system is under high voltage. If you modify
component parts in the vehicle's high-voltage
on-board electrical system or touch damaged
component parts, you may be electrocuted. In
addition, modied and/or damaged compo-
nents may cause a re.
In the event of an accident or impact to the
underbody, components of the high-voltage
on-board electrical system may be damaged
although the damage is not visible.
#
Never make any modications to the
high-voltage on-board electrical system.
#
Do not switch on or use the vehicle if its
high-voltage on-board electrical system
244
Driving and parking
F247 0072 02
components have been modied or dam-
aged.
#
Never touch damaged components of
the high-voltage on-board electrical sys-
tem.
#
Aer an accident, do not touch any com-
ponents of the high-voltage on-board
electrical system.
#
Aer an accident, have the vehicle trans-
ported away.
#
Have the components of the high-voltage
on-board electrical system checked at a
qualied specialist workshop and
replaced if necessary.
Requirements
Only disconnect the high-voltage on-board electri-
cal system manually in the following situations:
R
The 6 restraint system warning lamp lights
up in the driver's display, e.g. aer an acci-
dent.
R
The vehicle is badly damaged, e.g. aer an
accident, and the restraint system compo-
nents have not been triggered.
Operating the high-voltage disconnect device
#
Switch o the vehicle.
#
Shi the transmission to position j.
#
Apply the electric parking brake.
#
Secure the vehicle against rolling away.
#
Open the bonnet.
#
Press release tab 1 in the direction of the
arrow and pull it out.
#
Pull high-voltage disconnect device 2 in the
direction of the arrow until it engages.
The high-voltage on-board electrical system is
switched o.
All work on the hybrid drive system (including
aer disconnecting the high-voltage on-board
electrical system manually) may only be carried
out in a qualied specialist workshop.
Switching on the power supply or the vehicle
&
WARNING Accident– and risk of injury
with unsupervised children in the vehicle
If you leave children unattended in the vehicle,
they can in particular
R
Open doors and thereby endanger other
persons or road users.
Driving and parking
245
F247 0072 02
R
get out of the car and are hit by trac.
R
Operate vehicle equipment and become
trapped, forexample.
In addition, the children could also set the
vehicle in motion, for exampleby:
R
releasing the parking brake.
R
change the gearbox setting.
R
start the vehicle.
#
Never leave children unattended in the
vehicle.
#
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle.
#
Keep the key out of reach of children.
Requirements
R
The key is in the vehicle and is recognised.
R
The brake pedal is not depressed.
#
To switch on the power supply: press button
1 once.
You can, for example, switch on the wind-
screen wipers.
The power supply will be switched o again if the
following conditions are met:
R
You open the driver's door.
R
You press button
1 twice more.
#
To switch on the vehicle: press button 1
twice.
Indicator and warning lamps will light up on
the driver's display.
The vehicle will be switched o again if one of the
following conditions is met:
R
You do not start the vehicle within 15 minutes
and the transmission is in position j or the
electric parking brake is applied.
R
You press button
1 once.
Starting the vehicle
▌Starting the vehicle with the start/stop button
&
DANGER Risk of fatal injuries due to
exhaust gases
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Breathing in
these exhaust gases is hazardous to health
and results in poisoning.
#
Never leave the engine and, if present,
the stationary heater, running in an
246
Driving and parking
F247 0072 02
enclosed space without sucient venti-
lation.
&
WARNING Risk of re due to ammable
materials in the engine compartment or
on the exhaust system
Flammable materials may ignite.
#
Therefore, regularly check that there are
no ammable foreign materials in the
engine compartment or on the exhaust
system.
&
WARNING Accident– and risk of injury
with unsupervised children in the vehicle
If you leave children unattended in the vehicle,
they can in particular
R
Open doors and thereby endanger other
persons or road users.
R
get out of the car and are hit by trac.
R
Operate vehicle equipment and become
trapped, forexample.
In addition, the children could also set the
vehicle in motion, for exampleby:
R
releasing the parking brake.
R
change the gearbox setting.
R
start the vehicle.
#
Never leave children unattended in the
vehicle.
#
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle.
#
Keep the key out of reach of children.
Requirements
R
The key is in the vehicle and is recognised.
#
Shi the transmission to position j or i.
#
Depress the brake pedal and press button 1
once.
#
Keep the brake pedal depressed until the vehi-
cle starts.
#
If the vehicle does not start: switch o non-
essential consumer equipment and press but-
ton 1 once.
Driving and parking
247
F247 0072 02
#
If the vehicle still does not start and the Place
the key in the marked space See Owner's
Manual
display message appears on the driv-
er's display: start the vehicle with the key in
the marked space (emergency operation
mode) (/ page 248).
%
You can switch o the vehicle while driving. To
do this, press and hold button 1 for about
three seconds or press button
1 three times
within three seconds. Be sure to observe the
safety notes concerning this under "Driving
tips" (/ page 251).
Observe any information regarding display mes-
sages that may be shown on the driver's display.
▌Starting the vehicle with the key in the marked
space (emergency operation mode)
&
DANGER Risk of fatal injuries due to
exhaust gases
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Breathing in
these exhaust gases is hazardous to health
and results in poisoning.
#
Never leave the engine and, if present,
the stationary heater, running in an
enclosed space without sucient venti-
lation.
&
WARNING Risk of re due to ammable
materials in the engine compartment or
on the exhaust system
Flammable materials may ignite.
#
Therefore, regularly check that there are
no ammable foreign materials in the
engine compartment or on the exhaust
system.
&
WARNING Accident– and risk of injury
with unsupervised children in the vehicle
If you leave children unattended in the vehicle,
they can in particular
R
Open doors and thereby endanger other
persons or road users.
R
get out of the car and are hit by trac.
R
Operate vehicle equipment and become
trapped, forexample.
In addition, the children could also set the
vehicle in motion, for exampleby:
R
releasing the parking brake.
R
change the gearbox setting.
R
start the vehicle.
#
Never leave children unattended in the
vehicle.
#
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle.
#
Keep the key out of reach of children.
If the vehicle does not start and the Place the
key in the marked space See Owner's Manual
message appears on the driver's display, you can
start the vehicle in emergency mode.
248
Driving and parking
F247 0072 02
Marked space (example with cup holder without
cover)
#
Open the cover of marked space 2 if neces-
sary.
#
Make sure that marked space 2 is empty.
#
Remove key 1 from the key ring.
#
Place key 1 on symbol 3 in marked space
2.
The vehicle will start aer a short time.
If you remove key
1 from marked space 2,
the vehicle can still be driven. For further
engine starts, however, key
1 must be loca-
ted on symbol
3 in marked space 2 during
the entire journey.
#
Have key 1 checked at a qualied specialist
workshop.
If the vehicle does not start:
#
Place key 1 in marked space 2 and leave it
there.
#
Depress the brake pedal and start the vehicle
using the start/stop button.
#
Keep the brake pedal depressed until the vehi-
cle starts.
%
You can switch on the power supply or the
vehicle with the start/stop button.
Observe any information regarding display mes-
sages that may be shown on the driver's display.
Starting the vehicle via Remote Online Services
▌Cooling or heating the vehicle interior before
starting a journey
Ensure the following before starting the engine:
R
The legal stipulations in the area where your
vehicle is parked allow engine starting via
smartphone.
R
It is safe to start and run the engine where
your vehicle is parked.
R
The fuel tank is suciently full.
R
The starter battery is suciently charged.
▌Charging the starter battery before starting a
journey
You can receive a message on your smartphone
when the state of charge of the starter battery is
low. You can then start the vehicle with the smart-
phone to charge the battery. The vehicle is auto-
matically switched o aer ten minutes.
Ensure the following before starting the engine:
R
The legal stipulations in the area where your
vehicle is parked allow engine starting via
smartphone.
Driving and parking
249
F247 0072 02
R
It is safe to start and run the engine where
your vehicle is parked.
R
The fuel tank is suciently full.
▌Starting the vehicle (Remote Online)
&
DANGER Risk of fatal injuries due to
exhaust gases
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Breathing in
these exhaust gases is hazardous to health
and results in poisoning.
#
Never leave the engine and, if present,
the stationary heater, running in an
enclosed space without sucient venti-
lation.
&
WARNING Risk of re due to ammable
materials in the engine compartment or
on the exhaust system
Flammable materials may ignite.
#
Therefore, regularly check that there are
no ammable foreign materials in the
engine compartment or on the exhaust
system.
&
WARNING Risk of crushing or entrapment
due to unintentional starting of the engine
Limbs could be crushed or trapped if the
engine is started unintentionally during service
or maintenance work.
#
Always secure the engine against unin-
tentional starting before carrying out
maintenance or repair work.
&
WARNING Accident– and risk of injury
with unsupervised children in the vehicle
If you leave children unattended in the vehicle,
they can in particular
R
Open doors and thereby endanger other
persons or road users.
R
get out of the car and are hit by trac.
R
Operate vehicle equipment and become
trapped, forexample.
In addition, the children could also set the
vehicle in motion, for exampleby:
R
releasing the parking brake.
R
change the gearbox setting.
R
start the vehicle.
#
Never leave children unattended in the
vehicle.
#
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle.
#
Keep the key out of reach of children.
Requirements
R
Park position j is selected.
R
The anti-the alarm system is not activated.
R
The hazard warning light system is switched
o.
R
The bonnet is closed.
R
The doors are closed and locked.
R
The windows and sliding sunroof are closed.
250
Driving and parking
F247 0072 02
#
Start the vehicle using the smartphone.
Aer every engine start, the engine will run for
ten minutes.
You can carry out a maximum of two consecutive
starting attempts. You must start the engine with
the key before trying to start the vehicle with the
smartphone again.
You can switch o the vehicle at any time as fol-
lows:
R
Via the smartphone app
R
By pressing the Ü or ß button on the
key
%
Further information can be found in the
smartphone app.
Securing the engine against starting before carry-
ing out maintenance or repair work:
#
Switch on the hazard warning light system or
unlock the doors.
#
Open a side window or the sliding sunroof.
Running-in notes
To preserve the engine during the rst 1500 km:
R
Drive at varying road speeds and engine
speeds.
R
No faster than 140 km/h.
R
Drive the vehicle in drive mode A or ;.
R
Shi to the next higher gear at the very latest
when the needle reaches the last third before
the red area in the rev counter.
R
Do not shi down manually in order to brake.
R
Avoid overstraining the vehicle, e.g. driving at
full throttle.
R
Do not depress the accelerator pedal past the
pressure point (kickdown).
R
Only increase the engine speed gradually and
accelerate the vehicle to full speed aer
1500 km.
This also applies when the engine or parts of the
drivetrain have been replaced.
Please also observe the following running-in
notes:
R
In certain handling and driving safety systems,
the sensors adjust automatically while a cer-
tain distance is being driven aer the vehicle
has been delivered or aer repairs. Full sys-
tem eectiveness is only reached when this
teaching-in process has concluded.
R
Brake pads, brake disks and tyres that are
either new or have been replaced only achieve
optimum braking eect and grip aer driving
several hundred kilometres. Compensate the
reduced braking eect by applying greater
force to the brake pedal.
Notes on driving
&
WARNING Risk of accident due to objects
in the driver's footwell
Objects in the driver's footwell may impede
pedal travel or block a depressed pedal.
This will jeopardise the operating and road
safety of the vehicle.
Driving and parking
251
F247 0072 02
#
Stow all objects in the vehicle securely
so that they cannot get into the driver's
footwell.
#
Make sure that there is always sucient
clearance for the pedals.
#
Always t the oor mats securely and as
prescribed.
#
Do not use loose oor mats and do not
place oor mats on top of one another.
&
WARNING Risk of accident due to incor-
rect footwear
Incorrect footwear includes, for example:
R
shoes with platform soles
R
shoes with high heels
R
slippers
There is a risk of an accident.
#
Always wear suitable footwear so that
you can operate the pedals safely.
&
WARNING Risk of accident if the vehicle is
switched o while driving
If you switch o the vehicle while driving,
safety functions are restricted or no longer
available.
This may aect the power steering system and
the brake force boosting, for example.
You will need to use considerably more force
to steer and brake, for example.
#
Do not switch o the vehicle while driv-
ing.
&
DANGER Risk of fatal injuries due to
exhaust gases
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Breathing in
these exhaust gases is hazardous to health
and results in poisoning.
#
Never leave the engine and, if present,
the stationary heater, running in an
enclosed space without sucient venti-
lation.
&
WARNING Risk of skidding and of an acci-
dent due to shiing down on slippery road
surfaces
If you shi down on slippery road surfaces to
increase the engine braking eect, the drive
wheels may lose traction.
#
Do not shi down on slippery road surfa-
ces to increase the engine braking
eect.
&
DANGER Risk of fatal injury due to poison-
ous exhaust gases
If the tailpipe is blocked or sucient ventila-
tion is not possible, poisonous exhaust gases
such as carbon monoxide may enter the vehi-
cle. This is the case, for example, if the vehicle
gets stuck in the snow.
#
Keep the tailpipe and the area around
the vehicle free from snow when the
engine or the stationary heater is run-
ning.
252
Driving and parking
F247 0072 02
#
Open a window on the side of the vehicle
facing away from the wind to ensure an
adequate supply of fresh air.
&
WARNING Risk of accident due to the
brake system overheating
If you leave your foot on the brake pedal when
driving, the brake system may overheat.
This increases the braking distance and the
brake system can even fail.
#
Never use the brake pedal as a footrest.
#
Do not depress the brake pedal and the
accelerator pedal at the same time while
driving.
*
NOTE Engine damage due to excessively
high engine speeds
The engine will be damaged if you drive with
the engine in the overrevving range.
#
Do not drive with the engine in the over-
revving range.
*
NOTE Causing wear to the brake linings by
permanently depressing the brake pedal
#
Do not permanently depress the brake
pedal while driving.
#
To use braking eect of the engine, shi
to a lower gear in good time.
*
NOTE Damage to the drivetrain and
engine when pulling away
#
Do not warm up the engine while the
vehicle is stationary. Pull away immedi-
ately.
#
Avoid high engine speeds and driving at
full throttle until the engine has reached
its operating temperature.
*
NOTE Damage to the catalytic converter
due to non-combusted fuel
The engine is not running smoothly and is mis-
ring.
Non-combusted fuel may get into the catalytic
converter.
#
Only depress the accelerator pedal
slightly.
#
Have the cause rectied immediately at
a qualied specialist workshop.
*
NOTE Reduced battery life due to frequent
short-distance trips
The 12 V battery may not be suciently
charged when the vehicle is used only for
short-distance trips. This reduces the life of
the battery.
#
Drive longer distances regularly to
charge the battery.
*
NOTE Vehicle damage due to failure to
observe the maximum permissible clear-
ance height
If the vehicle height exceeds the maximum
permissible clearance height, the roof and
other vehicle parts may be damaged.
#
Please observe the indicated maximum
clearance height.
Driving and parking
253
F247 0072 02
#
If the vehicle exceeds the permissible
clearance height, do not drive in.
#
Take the modied vehicle height in the
case of roof superstructures or other
carrier systems into account.
%
Please bear in mind that all the speed values
stated in this Owner's Manual are approxi-
mate and are subject to a certain tolerance.
Notes on driving with a roof load, trailer or fully
laden vehicle
When driving with a laden roof luggage rack or
trailer and with a fully laden or fully occupied vehi-
cle the handling and steering characteristics of
your vehicle change.
Therefore observe the following notes:
R
Do not exceed permissible roof load and
trailer load. Also observe the information in
the technical data.
R
Distribute the roof load and vehicle load
evenly and place heavy objects towards the
bottom. Also observe the notes on loading the
vehicle in this regard (/ page 184).
R
Drive carefully, avoid abrupt moving o, brak-
ing and steering and fast cornering.
Notes on driving on salt-strewn roads
The braking eect is limited on salt-strewn road
surfaces.
Therefore, observe the following notes:
R
Due to salt build-up on the brake disks and
brake pads, the braking distance can increase
considerably or result in one-sided braking.
R
Maintain a much greater safety distance to the
vehicle travelling ahead.
Remove salt build-up as follows:
R
Brake occasionally, paying attention to the
trac conditions
R
Carefully press the brake pedal at the end of
the journey and when starting the next jour-
ney
Notes on aquaplaning
Aquaplaning can take place if a certain depth of
water has built up on the road surface.
Observe the following notes during heavy rainfall
or in conditions in which aquaplaning may occur:
R
Reduce speed
R
Avoid tyre ruts.
R
Avoid sudden steering movements.
R
Brake carefully
%
Also observe the notes on regularly checking
wheels and tyres (/ page 31).
Notes on driving through water on the road
Water ingress can damage the engine, electrics
and transmission.
Water can also enter the air intake of the engine
and cause engine damage.
Observe the following if you must drive through
water:
R
The water, when calm, may reach no higher
than the lower edge of the vehicle body.
R
Drive at a walking pace at most; water can
otherwise enter the vehicle interior or engine
compartment.
254
Driving and parking
F247 0072 02
R
Vehicles travelling ahead, or oncoming vehi-
cles, can create waves which may exceed the
maximum permissible depth of the water.
The braking eect of the brakes is reduced aer
fording. Brake carefully, paying attention to the
trac conditions until braking power has been
fully restored.
ECO start/stop function
▌ECO start/stop function
%
Depending on the engine, the ECO start/stop
function is not available in all drive programs.
Observe the status display on the driver's dis-
play concerning this.
%
Plug-in hybrid: this function is not available.
The engine will be switched o automatically in
the following situations if all vehicle conditions for
an automatic engine stop are met:
R
You brake the vehicle to a standstill in trans-
mission position h or i.
R
Vehicles with a 48 V on-board electrical sys-
tem: you depress the brake pedal when travel-
ling at a low speed.
If the system has detected one of the following
situations, the engine will not stop:
R
You stop at a stop sign and there is no vehicle
in front of you.
R
The vehicle that stopped in front of you pulls
away again.
R
You manoeuvre, turn the steering wheel
sharply or engage reverse gear.
%
If the system detects an intelligent stop inhibi-
tor, e.g. a stop sign, the engine will not stop.
If you activate the HOLD function or engage
the park position j, the engine can be
switched o in spite of an intelligent stop
inhibitor.
The engine will restart automatically in the follow-
ing cases:
R
You engage transmission position h or k.
R
You depress the accelerator pedal.
R
The vehicle requires an automatic engine
start.
R
You release the brake pedal.
R
Vehicles with a 48 V on-board electrical sys-
tem:
-
You release the brake pedal on a downhill
gradient and the vehicle does not roll.
-
The vehicle rolls on a downhill gradient and
does not automatically enter glide mode at
20 km/h.
ECO start/stop function symbols on the driver's
display:
R
The è symbol (green) appears when the
vehicle is at a standstill: the engine was
switched o by the ECO start/stop function.
R
The ç symbol (yellow) appears when the
vehicle is at a standstill: not all vehicle condi-
tions for an engine stop have been met.
R
Neither the è symbol nor the ç symbol
appears when the vehicle is at a standstill: an
intelligent stop inhibitor, e.g. a stop sign, has
been detected.
Driving and parking
255
F247 0072 02
R
The s symbol appears: the ECO start/stop
function is deactivated or there is a malfunc-
tion.
If the engine was switched o by the ECO start/
stop function and you leave the vehicle, a warning
tone will sound and the engine will not be restar-
ted. In addition, the following display message will
appear on the driver's display:
Vehicle is operational Switch off vehicle before
exiting
If you do not switch o the vehicle, it will automat-
ically be switched o aer three minutes.
▌Switching the ECO start/stop function on/o
#
Press button 1.
A display will appear on the driver's display
when you switch the ECO start/stop function
on/o.
%
s will be continuously shown on the driv-
er's display while the ECO start/stop function
is deactivated.
ECO display function
%
Depending on the model and equipment, your
vehicle will have one of the following repre-
sentations of the ECO display.
The ECO display summarises your driving charac-
teristics from the start of the journey to its com-
pletion and assists you in achieving the most eco-
nomical driving style.
The ECO display assesses the following criteria for
an economical driving style:
R
Coasting at the right times
R
Consistent speed
R
Moderate acceleration
256
Driving and parking
F247 0072 02
The lettering in the segment will light up brightly,
the outer edge will light up and the segment will
ll up when the following driving style is adopted:
R
1 Steady speed
R
2 Gentle deceleration and rolling
R
3 Moderate acceleration
The lettering in the segment will be grey, the outer
edge will be dark and the segment will empty
when the following driving style is adopted:
R
1 Fluctuations in speed
R
2 Heavy braking
R
3 Sporty acceleration
The ECO display will show you when you have
driven economically:
R
The three segments will ll up completely at
the same time
R
The edges around all three segments will light
up
The additional range achieved as a result of your
driving style in comparison with a driver with a
very sporty driving style will be shown in the
centre of display
4. The range displayed does
not indicate a xed reduction in consumption.
The ECO display shows an evaluation of your driv-
ing style on the driver's display depending on the
situation. This enables you to check the eciency
of your driving style and adjust it if necessary. The
ECO display menu shows a ball 2 that will roll
forwards or backwards on a stylised road in the
direction of travel according to the driving charac-
teristics.
Above and below the road, lines mark the area for
an ecient driving style
3. Ball 2 will light up in
green if it is rolling within these lines. Outside the
lines, the ball will light up in orange.
The overall assessment of your driving style "from
start" is indicated using stars
1. It starts with
ve empty stars, which you can ll one aer the
other if you drive eciently. When all ve stars are
lled, a glow will appear in the background.
%
You can call up the ECO display function via
the
Classic menu (/ page 384).
ECO Assist function (vehicles with 48 V on-board
electrical system)
For plug-in hybrids, note the ECO Assist informa-
tion (/ page 260).
%
ECO Assist is active only in drive pro-
grams ; and A.
ECO Assist analyses data for the vehicle's expec-
ted route. This allows the system to optimally
adjust the driving style for the route ahead, save
fuel and recuperate. If the system detects an
event ahead and the vehicle nears the event, ECO
Assist will calculate the optimum speed for maxi-
mum fuel economy and recuperative energy
Driving and parking
257
F247 0072 02
based on the distance, speed and downhill gradi-
ent.
If the deceleration provided by ECO Assist is not
sucient, you must also brake with the service
brake. This will be the case particularly if, for
example, you pull away again in slow-moving traf-
c and the distance to the vehicle in front is very
short.
1
"Foot o the accelerator" recommendation
2
Route event ahead
If a route event or vehicle that requires an adjust-
ment of your driving style for more eciency is
detected ahead, corresponding symbol
2 and
the ý symbol (grey) will be displayed.
If you release the accelerator pedal, the ý
symbol will turn green and recuperation in over-
run mode will be initiated. If the deceleration is
not sucient, also apply the service brake. If ECO
Assist intervenes for a route event ahead (not for
a vehicle in front) and you then press the acceler-
ator pedal again, you will end control by ECO
Assist.
The ECO Assist display will be hidden again in the
following cases:
R
You do not react to the ECO Assist recommen-
dation for a long time.
R
You depress the accelerator pedal while ECO
Assist is intervening for a route event ahead
(not for a vehicle in front).
R
ECO Assist cannot identify any further recom-
mendations from the route ahead.
Depending on equipment, ECO Assist will detect
following route events
2 in addition to the vehi-
cle in front ¥:
~
Roundabout
£
T-junction
¤
Downhill gradient
¦
Speed limit
%
In drive program A, ECO Assist will react
only to the "vehicle in front" route event with-
out displaying the ¥ route event or ý
recommendation.
System limits
If the calculated route is adhered to when route
guidance is active, ECO Assist will operate with
greater accuracy. The basic function is also availa-
ble without active route guidance. Not all informa-
tion and trac situations can be foreseen. The
quality depends on the map data.
ECO Assist is only an aid. The driver is responsible
for keeping a safe distance from the vehicle in
front, for vehicle speed and for braking in good
time.
258
Driving and parking
F247 0072 02
The system may be impaired or may not function
in the following situations:
R
If visibility is poor, e.g. due to insucient illu-
mination of the road, highly variable shade
conditions, rain, snow, fog or heavy spray.
R
If there is glare, e.g. from oncoming trac,
direct sunlight or reections.
R
If the windscreen is dirty in the vicinity of the
multifunction camera.
R
If the multifunction camera is misted up, dam-
aged or obscured.
R
If road signs are hard to detect, e.g. due to
dirt, snow or insucient lighting, or because
they are obscured.
R
If the information in the navigation system's
digital map is incorrect or out of date.
R
If signs are ambiguous, e.g. road signs in road-
works or in adjacent lanes.
R
If the radar sensors are dirty or obscured.
R
When you drive on roads with steep gradients.
R
If there are narrow vehicles in front, such as
bicycles or motorcycles.
Recuperative brake system (plug-in hybrid)
▌Function of the recuperative brake system
%
The function is only available for plug-in
hybrids.
Depending on the selected recuperation level, the
electric motor is operated as an alternator when
in overrun mode and during braking in order to
charge the high-voltage battery while driving. As
soon as you take your foot o the accelerator
pedal when the vehicle is in motion and in trans-
mission position h, recuperation in overrun
mode is initiated.
The higher the recuperation, the more sharply the
vehicle is braked when coasting and the more
electrical energy is fed into the high-voltage bat-
tery.
The deceleration in overrun mode may not be suf-
cient depending on the driving conditions. Decel-
erating to a standstill is not possible. Also brake
with the service brake if necessary. Always adapt
your speed to the driving conditions and keep a
sucient distance.
The recuperative brake system has the following
characteristics:
R
supports braking with electronically controlled
brake force boosting
R
converts the kinetic energy of the vehicle into
electric energy
%
If you brake hard, the mechanical brake is
also used. This means that the maximum
recuperative energy cannot be recovered. The
more you accelerate and brake in an anticipa-
tory manner, the more eciently energy can
be recuperated.
System limits
The braking eect of the electric motor during
recuperation in overrun mode may be reduced or
may not be available at all in the following situa-
tions:
R
when the high-voltage battery charge level
increases
R
if the high-voltage battery is not yet at a nor-
mal operating temperature
Driving and parking
259
F247 0072 02
In these cases, the desired deceleration is set by
the brake control system.
▌Manually setting recuperative deceleration
%
This function is only available for a plug-in
hybrid.
You can use the steering wheel gearshi pad-
dles to adjust the intensity of recuperation in
drive programs n, o and Î.
The following recuperation levels are available:
R
hà Intelligent and anticipatory recupera-
tion with ECO Assist (/ page 260)
R
hq No recuperation: the vehicle rolls freely
R
h Normal recuperation
R
h± Increased recuperation: strong deceler-
ation in overrun mode, e.g. for driving on
downhill gradients
Standard setting:
R
hÃ: if the ECO Assist function is activa-
ted in the multimedia system (/ page 262).
R
h: if the ECO Assist function is deactivated
in the multimedia system.
%
hà is only available if the ECO Assist
function is activated in the multimedia system
and if the function of the radar sensors is not
impaired. Also observe the information on
vehicle sensors and cameras (/ page 310).
#
To increase recuperation: briey pull gearshi
paddle 1.
#
To reduce recuperation: briey pull gearshi
paddle 2.
#
Standard setting: pull and hold gearshi pad-
dle 1 or 2, or engage transmission position
h again.
%
When the vehicle is started again, the stand-
ard setting is also set.
The driver's display shows the currently selected
recuperation level next to the transmission posi-
tion display.
ECO Assist (plug-in hybrid)
▌ECO Assist function
%
The following function depends on the equip-
ment and the country and is available only for
plug-in hybrids.
ECO Assist analyses data for the vehicle's expec-
ted route. This allows the system to help optimally
adjust your driving style for the route ahead, save
fuel and recuperate. If the system detects an
event ahead and the vehicle nears the event, ECO
Assist will calculate the optimum speed for maxi-
mum fuel economy and recuperative energy
based on the distance, speed and downhill gradi-
ent.
If the deceleration provided by ECO Assist is not
sucient, you must also brake with the service
brake. This will be the case particularly if, for
260
Driving and parking
F247 0072 02
example, you pull away again in slow-moving traf-
c and the distance to the vehicle in front is very
short.
The function will be active in the following circum-
stances:
R
The function is activated in the multimedia
system (/ page 262).
R
The hà recuperation level is selected
(/ page 260).
R
p manual gearshiing is not activated.
R
Drive program C is not selected.
1
"Foot o the accelerator" recommendation
2
Route event ahead
If a route event that you can deal with more e-
ciently by adjusting your driving style is detected
ahead, corresponding symbol 2 and the ý
symbol will be displayed in grey.
If you release the accelerator pedal, the ý
symbol will turn green and recuperation in over-
run mode will be initiated. If the deceleration is
not sucient, also apply the service brake.
If ECO Assist intervenes for a route event ahead
and you press the accelerator pedal, you will end
control by ECO Assist. This does not apply in the
case of a vehicle in front.
The ECO Assist display will be hidden again in the
following cases:
R
You do not react to the ECO Assist recommen-
dation for a long time.
R
You press the accelerator pedal while ECO
Assist is intervening because of a route event
ahead. This does not apply in the case of a
vehicle in front.
R
ECO Assist cannot identify any further recom-
mendations from the route ahead.
In addition to a vehicle in front ¥, ECO Assist
can detect the following route events
2 depend-
ing on the vehicle's equipment:
~
Roundabout
¢
Sharp bend
&
Junction
£
T-junction
¤
Downhill gradient
¦
Speed limit
System limits
If the calculated route is adhered to when route
guidance is active, ECO Assist will operate with
greater accuracy. The basic function is also availa-
ble without active route guidance. Not all informa-
tion and trac situations can be foreseen. The
quality depends on the map data.
ECO Assist is only an aid. The driver is responsible
for keeping a safe distance from the vehicle in
front, for vehicle speed and for braking in good
time.
Driving and parking
261
F247 0072 02

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