2015-2021 Mercedes GLC Class SUV Driving and parking -> Driving and driving safety systems User Manual

MY CAR USER MANUAL

Driving and parking -> Driving and driving safety systems for Your Mercedes GLC Class SUV First Generation (2015-2021)

184 Driving and parking  
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Information on radar and ultrasonic sensors  
Overview of driving systems and driving  
safety systems  
The engine is switched off.  
Some driving and driving safety systems use  
radar or ultrasonic sensors to monitor the area  
in front of, behind or next to the vehicle (depend‐ the following driving systems and driving safety  
ing on the vehicle's equipment).  
Multimedia system:  
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In this section, you will find information about  
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Settings  
Vehicle  
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Switch Standby Mode on or off.  
When you activate the function, a prompt  
appears.  
systems:  
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Depending on the vehicle's equipment, the radar  
sensors are integrated behind the bumpers  
and/or behind the Mercedes star. The ultrasonic  
sensors are located in the front and rear bump‐  
ers. Keep these parts free of dirt, ice and slush  
(/ page 433). The sensors must not be cov‐  
ered, for example by bicycle racks, overhanging  
loads, stickers, foil or foils to protect against  
stone chipping. Additional license plate brackets  
can likewise impair the function of the ultrasonic  
sensors. In the event of damage to the bumpers  
or radiator grill, or following a collision impacting  
the bumpers or radiator grill, have the function  
of the sensors checked at a qualified specialist  
workshop. If the sensors are damaged, some  
driving systems and driving safety systems may  
no longer function properly.  
360° Camera (/ page 228)  
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ABS (Anti-lock Braking System)  
(/ page 185)  
Active Distance Assist DISTRONIC  
(/ page 201)  
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Select Yes.  
Standby mode is activated.  
Driving and driving safety systems  
Driving systems and your responsibility  
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AIR BODY CONTROL (/ page 214)  
Active Brake Assist (/ page 191)  
Active Lane Keeping Assist (/ page 245)  
ATTENTION ASSIST (/ page 238)  
BAS (Brake Assist System) (/ page 186)  
Hill Start Assist (/ page 213)  
Your vehicle is equipped with driving systems  
which assist you in driving, parking and maneu‐  
vering the vehicle. The driving systems are aids  
and do not relieve you of your responsibility per‐  
taining to road traffic law. Pay attention to the  
traffic conditions at all times and intervene  
when necessary. Be aware of the limitations  
regarding the safe use of these systems.  
DSR (Downhill Speed Regulation)  
(/ page 199)  
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EBD (Electronic Brakeforce Distribution)  
(/ page 191)  
Driving and parking 185  
Functions of Off-road ABS  
ESP® (Electronic Stability Program)  
(/ page 186)  
Off-road ESP® (/ page 189)  
ESP® Crosswind Assist (/ page 190)  
ESP® trailer stabilization (/ page 191)  
Active Speed Limit Assist (/ page 204)  
HOLD function (/ page 213)  
STEER CONTROL (/ page 191)  
Active Steering Assist with rescue lane func‐  
tion (/ page 207)  
Active Emergency Stop Assist (/ page 210)  
Active Parking Assist (/ page 232)  
Parking Assist PARKTRONIC (/ page 220)  
Rear view camera (/ page 225)  
Active Lane Change Assist (/ page 209)  
Cruise control (/ page 197)  
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Function of ABS  
The Anti-lock Brake System (ABS) regulates the  
brake pressure in critical driving situations:  
% Off-road ABS is activated automatically when  
you select the F or G drive program.  
Off-road ABS is specially adapted for driving off-  
road:  
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During braking, e.g. at full brake application  
or insufficient tire traction, the wheels are  
prevented from locking.  
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The front wheels lock cyclically during brak‐  
ing.  
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Vehicle steerability while braking is ensured.  
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The braking distance is shortened due to the  
digging-in effect.  
If ABS intervenes when braking, you will feel a  
pulsing in the brake pedal. The pulsating brake  
pedal can be an indication of hazardous road  
conditions and can serve as a reminder to take  
extra care while driving.  
System limits  
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Off-road ABS functions at speeds below  
25 mph (40 km/h).  
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System limits  
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If Off-road ABS intervenes, the ability to steer  
may be restricted.  
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ABS is active from speeds of approx. 5 mph  
(8 km/h).  
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ABS may be impaired or may not function if a  
malfunction has occurred and the yel‐  
low ! ABS warning lamp lights up contin‐  
uously in the instrument cluster after the  
engine is started.  
Blind Spot Assist and Active Blind Spot Assist  
with exit warning (/ page 242)  
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Traffic Sign Assist (/ page 240)  
186 Driving and parking  
Functions of ESP® (Electronic Stability Pro‐  
gram)  
ESP® can monitor and improve driving stability  
and traction in the following situations, within  
physical limits:  
Function of BAS (Brake Assist System)  
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WARNING Risk of an accident caused by  
a malfunction in BAS (Brake Assist Sys‐  
tem)  
WARNING Risk of skidding if ESP® is  
&
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When pulling away on wet or slippery road‐  
malfunctioning  
ways.  
If ESP® is malfunctioning, ESP® cannot carry  
out vehicle stabilization. In addition, other  
driving safety systems are switched off.  
If BAS is malfunctioning, the braking distance  
in an emergency braking situation is  
increased.  
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When braking.  
Vehicles with trailer hitch: in trailer opera‐  
tion from speeds of 40 mph (65 km/h), if the  
vehicle/trailer combination begins to sway  
from side to side.  
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Depress the brake pedal with full force  
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Drive on carefully.  
in emergency braking situations. ABS  
prevents the wheels from locking.  
Have ESP® checked at a qualified spe‐  
cialist workshop.  
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In strong side winds when you are driving  
faster than 47 mph (75 km/h).  
BAS supports your emergency braking situation  
with additional brake force.  
If you depress the brake pedal quickly, BAS is  
activated:  
WARNING Risk of skidding if ESP® is  
deactivated  
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If the vehicle deviates from the direction desired  
by the driver, ESP® can stabilize the vehicle by  
intervening in the following ways:  
If you deactivate ESP®, ESP® cannot carry  
out vehicle stabilization.  
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One or more wheels are braked.  
The engine output is adapted according to  
the situation.  
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BAS automatically boosts the brake pres‐  
sure.  
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ESP® should only be deactivated in the  
following situations.  
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BAS can shorten the braking distance.  
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ABS prevents the wheels from locking.  
ESP® is deactivated if the å ESP® OFF warn‐  
ing lamp lights up continuously in the instrument  
cluster:  
The brakes will function as usual once you  
release the brake pedal. BAS is deactivated.  
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Driving stability will no longer be improved.  
Driving and parking 187  
It can be advantageous to deactivate ESP® in the  
following situations to improve traction:  
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ETS/4ETS (Electronic Traction System)  
Vehicles with trailer hitch: stabilization of  
the vehicle/trailer combination is no longer  
active.  
Crosswind Assist is no longer active.  
The drive wheels could spin.  
ETS/4ETS traction control is part of ESP® and  
makes it possible to pull away and accelerate on  
a slippery roadway.  
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When using snow chains.  
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In deep snow.  
ETS/4ETS can improve the vehicle's traction by  
intervening in the following ways:  
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On sand or gravel.  
ETS/4ETS traction control is still active.  
% Spinning the wheels results in a cutting  
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The drive wheels are braked individually if  
they spin.  
When ESP® is deactivated, you are still assis‐  
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action, which enhances traction.  
ted by ESP® when braking.  
If the ÷ ESP® warning lamp lights up continu‐  
More drive torque is transferred to the wheel  
or wheels with traction.  
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ously, ESP® is not available due to a malfunction.  
If the ÷ ESP® warning lamp flashes in the  
instrument cluster, one or several vehicle wheels  
has reached its grip limit:  
Influence of drive programs on ESP®  
The drive programs enable ESP® to adapt to dif‐  
ferent weather and road conditions as well as  
the driver's preferred driving style. You can  
select the drive programs using the DYNAMIC  
SELECT switch (/ page 166).  
Observe the following information:  
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Warning and indicator lamps (/ page 553)  
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Adapt your driving style to suit the current  
road and weather conditions.  
Do not deactivate ESP®.  
Only depress the accelerator pedal as far as  
is necessary when pulling away.  
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Display messages (/ page 505)  
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188 Driving and parking  
ESP® characteristics per drive program  
Drive program  
ESP® mode  
Characteristics  
ESP® Comfort  
A (Comfort)  
; (Economy)  
These drive programs provide the ideal balance  
between traction and stability.  
Select drive program A or ; both in dry  
and particularly in difficult road conditions, such  
as snow or ice, or when the road is wet from  
rain.  
ESP® Sport  
C (Sport)  
This drive program continues to offer stability  
but with a sporty setup which allows the enthu‐  
siastic driver a more active driving style.  
Select drive program C in good road condi‐  
tions, for example on dry roads and clear  
stretches of road.  
Driving and parking 189  
ESP® mode  
Drive program  
Characteristics  
ESP® Sport +  
B (Sport +)  
The vehicle's own understeering and oversteer‐  
ing characteristics are accentuated. This allows  
a more active driving style to be adopted.  
Select drive program B in good road condi‐  
tions, for example on dry roads and clear  
stretches of road.  
Off-road ESP®  
Off-road + ESP®  
Vehicles with Off-road package:  
F (Off-road)  
G (Off-road +)  
These drive programs assist you when driving  
off-road.  
Select the F drive program for easily nego‐  
tiable off-road terrain, e.g. dirt tracks, gravel or  
sandy surfaces.  
Select the G drive program for rough terrain,  
e.g. for steep and/or uneven terrain or for driv‐  
ing on rocky terrain.  
Function of Off-road ESP®  
Off-road ESP® is activated automatically when  
you select the F or G drive program. It  
intervenes later if there is oversteering or under‐  
steering, thus improving traction.  
190 Driving and parking  
Activating/deactivating ESP® (Electronic Sta‐  
bility Program)  
Observe the information on warning lamps and  
display messages which may be shown in the  
instrument cluster.  
the instrument cluster. The ÷ OFF mes‐  
sage appears in the multifunction display.  
To activate ESP®: briefly press button 1.  
The å ESP® OFF warning lamp in the  
instrument cluster goes out.  
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Multimedia system:  
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5
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Settings  
Quick Access  
Activating/deactivating ESP® (Electronic Sta‐  
bility Program)  
ESP® can only be activated/deactivated  
using quick access when at least one other  
function is available in quick access. ESP®  
can otherwise be found in the Assistance  
menu.  
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Observe the information on warning lamps and  
display messages which may be shown in the  
instrument cluster.  
Function of ESP® Crosswind Assist  
ESP® Crosswind Assist detects sudden gusts of  
side wind and helps the driver to keep the vehi‐  
cle in the lane:  
Mercedes‑AMG vehicles: observe the notes in  
the Supplement. Otherwise, you may fail to rec‐  
ognize dangers.  
Plug‑in Hybrid: observe the notes in the Supple‐  
ment. Otherwise, you may fail to recognize dan‐  
gers.  
ESP® Crosswind Assist is active at vehicle  
speeds between approx. 50 mph (80 km/h)  
and 125 mph (200 km/h) when driving  
straight ahead or cornering slightly.  
The vehicle is stabilized by means of individ‐  
ual brake application on one side.  
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Select ESP.  
A prompt appears.  
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Select On or å Off.  
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ESP® is deactivated if the å ESP® OFF warn‐  
ing lamp lights up continuously in the instrument  
cluster.  
To deactivate ESP®: press button 1 until  
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the å ESP® OFF warning lamp lights up in  
Driving and parking 191  
Function of ESP® trailer stabilization  
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In the event of severe swerving, the engine  
output is also reduced and all wheels are  
braked.  
This steering recommendation is given particu‐  
larly in the following situations:  
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WARNING Risk of accident in poor road  
and weather conditions  
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Both right wheels or both left wheels are on  
a wet or slippery road surface when you  
brake  
ESP® trailer stabilization may be impaired or  
may not function if:  
In poor road and weather conditions, the  
trailer stabilization cannot prevent lurching of  
the vehicle/trailer combination. Trailers with  
a high center of gravity may tip over before  
ESP® detects this.  
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The vehicle starts to skid  
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The trailer is not connected correctly or is  
not detected properly by the vehicle.  
System limits  
STEER CONTROL may be impaired or may not  
function in the following situations:  
Function of EBD (electronic brake force dis‐  
tribution)  
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Always adapt your driving style to suit  
ESP® is deactivated.  
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the current road and weather condi‐  
tions.  
ESP® is malfunctioning.  
EBD is characterized by the following:  
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Monitoring and regulating the brake pressure  
on the rear wheels.  
Improved driving stability when braking,  
especially on bends.  
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The steering is malfunctioning.  
When driving with a trailer, ESP® can stabilize  
your vehicle if the trailer begins to swerve from  
side to side:  
If ESP® is malfunctioning, you will be assisted  
further by the electric power steering.  
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ESP® trailer stabilization is active above  
speeds of 40 mph (65 km/h).  
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Function of Active Brake Assist  
Function of STEER CONTROL  
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Slight swerving is reduced by means of a tar‐  
Active Brake Assist consists of the following  
functions:  
STEER CONTROL helps you by transmitting a  
noticeable steering force to the steering wheel in  
the direction required for vehicle stabilization.  
geted, individual brake application on one  
side.  
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Distance warning function  
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Autonomous braking function  
192 Driving and parking  
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Situation-dependent braking assistance  
occurs. The brake pressure increases up to max‐  
imum full-stop braking if necessary.  
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WARNING Risk of an accident caused by  
limited detection performance of Active  
Brake Assist  
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age: Evasive Steering Assist and cornering  
function  
Active Brake Assist cannot always clearly  
identify objects and complex traffic situa‐  
tions.  
In such cases, Active Brake Assist might:  
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Active Brake Assist can help you to minimize the  
risk of a collision with vehicles, cyclists or  
pedestrians, or reduce the effects of such a colli‐  
sion.  
If Active Brake Assist has detected a risk of colli‐  
sion, a warning tone sounds and the L dis‐  
tance warning lamp lights up in the instrument  
cluster.  
If you do not react to the warning, autonomous  
braking can be initiated in critical situations.  
In especially critical situations, Active Brake  
Assist can initiate autonomous braking directly.  
In this case, the warning lamp and warning tone  
occur simultaneously with the braking applica‐  
tion.  
Give a warning or brake without reason  
Not give a warning or not brake  
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Always pay careful attention to the traf‐  
fic situation; do not rely on Active Brake  
Assist alone. Active Brake Assist is only  
an aid. The driver is responsible for  
maintaining a suitable distance to the  
vehicle in front, vehicle speed and for  
braking in good time.  
If autonomous braking or situation-dependent  
braking assistance has occurred, display 1  
appears in the multifunction display and then  
automatically goes out after a short time.  
If the autonomous braking function or the situa‐  
tion-dependent braking assistance is triggered,  
additional preventive measures for occupant  
protection (PRE-SAFE®) may also be initiated.  
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Be prepared to brake or swerve if nec‐  
essary.  
If you apply the brake yourself in a critical situa‐  
tion or apply the brake during autonomous brak‐  
ing, situation-dependent braking assistance  
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If the system is unavailable, the æ display  
appears in the multifunction display.  
Also observe the system limits of Active Brake  
Assist.  
Driving and parking 193  
The individual subfunctions are available in  
the following speed ranges:  
The distance warning function issues a warning  
in the following situations:  
pedestrian, you will hear an intermittent  
warning tone and the L distance warning  
lamp lights up in the instrument cluster.  
Brake immediately or take evasive action, provi‐  
ded it is safe to do so and the traffic situation  
allows this.  
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From approximately 4 mph (7 km/h), if your  
vehicle is critically close to a vehicle or  
The distance warning function can aid you in the following situations with an intermittent warning tone and a warning lamp:  
Vehicles  
traveling in  
front  
Stationary  
vehicles  
Crossing  
vehicles  
Moving  
Stationary  
Crossing  
Cyclists travel‐ Stationary  
pedestrians pedestrians cyclists  
ing in front  
cyclists  
Vehicles  
Up to approx. Up to approx. No reaction  
Up to approx. No reaction  
50 mph  
(80 km/h)  
Up to approx.  
Up to approx.  
50 mph  
(80 km/h)  
No reaction  
without Driv‐ 155 mph  
50 mph  
37 mph  
ing Assis‐  
tance Pack‐  
age  
(250 km/h)  
(80 km/h)  
(60 km/h)  
Vehicles with Up to approx. Up to approx. Up to approx. Up to approx. Up to approx. Up to approx.  
Up to approx.  
50 mph  
(80 km/h)  
Up to approx.  
43 mph  
(70 km/h)  
Driving Assis‐ 155 mph  
62 mph  
43 mph  
50 mph  
43 mph  
43 mph  
tance Pack‐  
age  
(250 km/h)  
(100 km/h)  
(70 km/h)  
(80 km/h)  
(70 km/h)  
(70 km/h)  
194 Driving and parking  
The autonomous braking function may intervene at speeds starting from approximately 4 mph (7 km/h) in the following situations:  
Vehicles  
traveling in  
front  
Stationary  
vehicles  
Crossing  
vehicles  
Moving  
Stationary  
Crossing  
Cyclists travel‐ Stationary  
pedestrians pedestrians cyclists  
ing in front  
cyclists  
Vehicles  
Up to approx. Up to approx. No reaction  
Up to approx. No reaction  
37 mph  
(60 km/h)  
Up to approx.  
Up to approx.  
50 mph  
(80 km/h)  
No reaction  
without Driv‐ 124 mph  
31 mph  
37 mph  
ing Assis‐  
tance Pack‐  
age  
(200 km/h)  
(50 km/h)  
(60 km/h)  
Vehicles with Up to approx. Up to approx. Up to approx. Up to approx. Up to approx. Up to approx.  
Up to approx.  
50 mph  
(80 km/h)  
Up to approx.  
43 mph  
(70 km/h)  
Driving Assis‐ 155 mph  
62 mph  
43 mph  
43 mph  
43 mph  
43 mph  
tance Pack‐  
age  
(250 km/h)  
(100 km/h)  
(70 km/h)  
(70 km/h)  
(70 km/h)  
(70 km/h)  
Driving and parking 195  
Situation-dependent braking assistance may intervene at speeds starting from approximately 4 mph (7 km/h) in the following situations:  
Vehicles  
traveling in  
front  
Stationary  
vehicles  
Crossing  
vehicles  
Moving  
Stationary  
Crossing  
Cyclists travel‐ Stationary  
pedestrians pedestrians cyclists  
ing in front  
cyclists  
Vehicles  
Up to approx. Up to approx. No reaction  
Up to approx. No reaction  
37 mph  
(60 km/h)  
Up to approx.  
Up to approx.  
50 mph  
(80 km/h)  
No reaction  
without Driv‐ 155 mph  
50 mph  
37 mph  
ing Assis‐  
tance Pack‐  
age  
(250 km/h)  
(80 km/h)  
(60 km/h)  
Vehicles with Up to approx. Up to approx. Up to approx. Up to approx. Up to approx. Up to approx.  
Up to approx.  
50 mph  
(80 km/h)  
Up to approx.  
43 mph  
(70 km/h)  
Driving Assis‐ 155 mph  
62 mph  
43 mph  
43 mph  
43 mph  
43 mph  
tance Pack‐  
age  
(250 km/h)  
(100 km/h)  
(70 km/h)  
(70 km/h)  
(70 km/h)  
(70 km/h)  
Canceling a brake application of Active Brake  
Assist  
You can cancel a brake application of Active  
Brake Assist at any time by:  
Evasive Steering Assist (only vehicles with  
Driving Assistance Package)  
Evasive Steering Assist has the following charac‐  
teristics:  
Active Brake Assist may cancel the brake appli‐  
cation when one of the following conditions is  
fulfilled:  
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You maneuver to avoid the obstacle.  
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Fully depressing the accelerator pedal or  
There is no longer a risk of collision.  
An obstacle is no longer detected in front of  
your vehicle.  
The ability to detect stationary or moving  
with kickdown.  
pedestrians.  
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Releasing the brake pedal.  
Assistance through power-assisted steering if  
it detects a swerving maneuver.  
196 Driving and parking  
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System limits  
Activation by an abrupt steering movement  
during a swerving maneuver.  
Assistance during swerving and straightening  
of the vehicle.  
Reaction from a speed of approximately  
12 mph (20 km/h) up to a speed of approx‐  
imately 43 mph (70 km/h).  
In addition, the steering support of Evasive  
Steering Assist is generally not sufficient to  
avoid a collision.  
Full system performance is not available for a  
few seconds after switching on the ignition or  
after driving off.  
In such cases Evasive Steering Assist can:  
The system may be impaired or may not function  
in the following situations:  
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give an unnecessary warning or provide  
assistance  
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In snow, rain, fog, heavy spray, if there is  
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not give a warning or not provide assis‐  
tance  
glare, in direct sunlight or in greatly varying  
ambient light.  
You can prevent the assistance at any time by  
actively steering.  
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Always pay careful attention to the traf‐  
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If the sensors are dirty, fogged up, damaged  
or covered.  
Cornering function (only vehicles with Driv‐  
ing Assistance Package)  
If a danger of collision from an oncoming vehicle  
is detected when turning across an oncoming  
lane, autonomous braking can be initiated at  
speeds below 9 mph (15 km/h) before you have  
left the lane in which you are driving.  
fic situation; do not rely on Evasive  
Steering Assist alone.  
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If the sensors are impaired due to interfer‐  
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Be ready to brake and take evasive  
action if necessary.  
ence from other radar sources, e.g. strong  
radar reflections in parking garages.  
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Prevent the assistance by actively  
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If a loss of tire pressure or a faulty tire has  
been detected and displayed.  
steering in non-critical driving situa‐  
tions.  
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If DSR is activated.  
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Drive at an appropriate speed if pedes‐  
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WARNING Risk of an accident despite  
Evasive Steering Assist  
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In complex traffic situations where objects  
cannot always be clearly identified.  
trians are close to the path of your vehi‐  
cle.  
Evasive Steering Assist cannot always clearly  
identify objects and complex traffic situa‐  
tions.  
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If pedestrians or vehicles move quickly into  
the sensor detection range.  
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If pedestrians are hidden by other objects.  
Driving and parking 197  
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If the typical outline of a pedestrian cannot  
be distinguished from the background.  
If a pedestrian is not detected as such, e.g.  
due to special clothing or other objects.  
Select a setting.  
The setting is retained when the engine is  
next started.  
foot from the accelerator pedal after overtaking,  
cruise control will resume speed regulation back  
to the stored speed.  
Cruise control is operated using the correspond‐  
ing steering wheel buttons. You can store any  
speed above 15 mph (20 km/h) up to the maxi‐  
mum speed.  
If you fail to adapt your driving style, cruise con‐  
trol can neither reduce the risk of an accident  
nor override the laws of physics. It cannot take  
into account road, weather or traffic conditions.  
Cruise control is only an aid. The driver is  
responsible for the distance to the vehicle in  
front, for vehicle speed, for braking in good time  
and for staying in lane.  
Deactivating Active Brake Assist  
% It is recommended that you always leave  
On bends with a tight radius.  
Active Brake Assist activated.  
% The Active Brake Assist sensors adjust auto‐  
matically while a certain distance is being  
driven after the vehicle has been delivered.  
Active Brake Assist is unavailable or only  
partially available during this teach-in period.  
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Select Off.  
The distance warning function, the autono‐  
mous braking function and the Evasive Steer‐  
ing Assist are deactivated.  
When the vehicle is next started, the middle  
setting is automatically selected.  
Setting Active Brake Assist  
Requirements:  
% If Active Brake Assist is deactivated, the  
æ symbol appears in the status bar of the  
multifunction display.  
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The ignition is switched on.  
Mercedes‑AMG vehicles: Cruise control is  
available up to a maximum speed of 155 mph  
(250 km/h).  
Multimedia system:  
4
5
5
Speed control cruise control  
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Settings  
Assistance  
5
Active Brake Assist  
Displays on the multifunction display  
The status of cruise control and the stored  
speed are shown in the multifunction display.  
Function of cruise control  
Cruise control regulates the speed to the value  
selected by the driver.  
If you accelerate to overtake, for example, the  
stored speed is not deleted. If you remove your  
The following settings are available:  
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Early  
Medium  
Late  
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198 Driving and parking  
Requirements:  
doing so, you will make use of the engine's brak‐  
ing effect. This relieves the load on the brake  
system and prevents the brakes from overheat‐  
ing and wearing too quickly.  
Do not use cruise control in the following situa‐  
tions:  
ESP® must be activated, but not intervening.  
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The driven speed is at least 15 mph  
(20 km/h).  
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The transmission is in position h.  
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In traffic situations which require frequent  
changes of speed, e.g. in heavy traffic, on  
winding roads.  
R
On slippery roads. Accelerating can cause  
the drive wheels to lose traction and the  
vehicle could then skid.  
1
2
3
Cruise control is selected  
Speed is saved, cruise control is deactivated  
Speed is saved, cruise control is activated  
R
If you are driving when visibility is poor.  
% The segments between the stored speed and  
the end of the segment display light up in  
the speedometer.  
Operating cruise control  
&
WARNING Risk of accident due to stored  
speed  
System limits  
Cruise control may be unable to maintain the  
stored speed on uphill gradients. The stored  
speed is resumed when the gradient evens out.  
If you call up the stored speed and this is  
lower than your current speed, the vehicle  
decelerates.  
Change into a lower gear in good time on long  
and steep downhill gradients. Take particular  
note of this when driving a laden vehicle. By  
#
Take into account the traffic situation  
before calling up the stored speed.  
#
To activate cruise control: press rocker  
switch 1 up.  
Driving and parking 199  
#
#
#
To activate cruise control: press rocker  
switch 2 up (SET+) or down (SET-).  
The current speed is stored and maintained  
by the vehicle.  
Accelerate the vehicle to the desired speed.  
Press rocker switch 2 up (SET+).  
target speed. The steeper the downhill gradient,  
the greater the DSR braking effect on the vehi‐  
cle. On flat stretches of road and uphill gradi‐  
ents, the DSR brakes the vehicle minimally or  
not at all.  
When DSR is activated and the transmission is in  
position h, k or i, DSR controls the driving  
speed. The target speed can be set to a value  
between 1 mph (2 km/h) and 11 mph  
(18 km/h). By braking or accelerating, you can  
drive at a higher or lower speed than the target  
speed at any time.  
DSR is deactivated automatically if you drive at  
speeds greater than 28 mph (45 km/h) or select  
drive program C or B. The î Off mes‐  
sage then appears in the multifunction display.  
The status indicator in the multifunction display  
disappears. You also hear a warning tone.  
If cruise control is activated and Traffic Sign  
Assist has detected a speed restriction sign with  
a maximum permissible speed and this is dis‐  
played in the instrument cluster, you can choose  
between the following options:  
or  
#
Press rocker switch 3 up (RES).  
The last stored speed is called up and main‐  
tained by the vehicle.  
If the last stored speed has previously been  
deleted, the currently driven speed is stored.  
#
To adopt the detected speed: press rocker  
switch 3 up (RES).  
The maximum permissible speed shown by  
the traffic sign is stored and the vehicle  
maintains this speed.  
To deactivate cruise control: press rocker  
switch 3 down (CNCL).  
To deactivate cruise control: press rocker  
switch 1 down.  
% When you switch off the vehicle, the last  
speed stored is cleared.  
To increase/reduce speed: press rocker  
switch 2 up (SET+) or down (SET-) to the  
pressure point.  
The stored speed is increased or reduced by  
1 mph (1 km/h).  
#
#
#
If you brake, deactivate ESP® or if ESP®  
intervenes, cruise control is deactivated.  
%
or  
#
Press rocker switch 2 up (SET+) or down  
DSR (Downhill Speed Regulation)  
(SET-) beyond the pressure point.  
The stored speed is increased or reduced by  
5 mph (10 km/h).  
Function of DSR (Downhill Speed Regulation)  
DSR is an aid to assist you when driving down‐  
hill. It keeps the speed of travel at the selected  
or  
200 Driving and parking  
Notes on DSR  
Changing the target speed  
able to keep to the target speed. Select a target  
speed suitable for the environmental conditions  
and also apply the brakes yourself if required.  
&
WARNING Risk of skidding and having  
an accident when DSR is activated on  
slippery road surfaces  
Activating/deactivating DSR (Downhill Speed  
Regulation)  
Requirements:  
If the speed driven and the target speed dif‐  
fer, and you activate DSR on a slippery road  
surface, the wheels may lose traction.  
R
You are driving at 24 mph (40 km/h) or  
slower.  
#
Take into account the road surface and  
If the current vehicle speed is too high, the  
Max. Speed 24 mph message appears in the  
multifunction display.  
the difference between the driving  
speed and target speed before activat‐  
ing DSR.  
R
Active Distance Assist DISTRONIC is deacti‐  
vated.  
If you fail to adapt your driving style, DSR can  
neither reduce the risk of an accident nor over‐  
ride the laws of physics. It cannot take into  
account road, weather or traffic conditions. DSR  
is only an aid. You are responsible for maintain‐  
ing a safe distance to the vehicle in front, for  
vehicle speed, for braking in good time and for  
staying in lane.  
Multimedia system:  
4
5
5
©
Settings  
Quick Access  
#
#
To increase or decrease the target speed:  
Select î.  
A status display appears in the multifunction  
display when the function is activated.  
press rocker switch 1 up to the point of  
resistance for a higher target speed and  
down for a lower target speed.  
The selected target speed increases or  
decreases by 1 mph (1 km/h) and appears  
with the DSR symbol in the multifunction dis‐  
play.  
You are always responsible for keeping control of  
the vehicle and for assessing whether the down‐  
hill gradient can be managed. Depending on  
road surface and tires, DSR may not always be  
Driving and parking 201  
R
% The target speed always adjusts in 1 mph  
(1 km/h) increments. This is regardless of  
whether you press the rocker switch to or  
beyond the point of resistance.  
the set speed. The speed and distance to the  
vehicle in front are set and saved on the steering  
wheel on vehicles without the Driving Assistance  
Package, in the range between 15 mph  
(20 km/h) and 120 mph (200 km/h) and, on  
vehicles with the Driving Assistance Package, in  
the range between 15 mph (20 km/h) and  
130 mph (210 km/h).  
Initiates acceleration to the stored speed if  
the turn signal indicator is switched on to  
change to the overtaking lane.  
R Vehicles with Driving Assistance Pack‐  
age: takes one-sided overtaking restrictions  
into account on highways or on multi-lane  
roads with separate roadways (country-  
dependent).  
Active Distance Assist DISTRONIC  
Function of Active Distance Assist  
DISTRONIC  
The adjustable set speed can vary due to the fol‐  
lowing factors:  
Vehicles with Active Parking Assist and Driv‐  
ing Assistance Package: if the vehicle has  
been braked to a standstill on multi-lane, sepa‐  
rate roadways by Active Distance Assist  
DISTRONIC, it can automatically follow the vehi‐  
cle in front driving off again within 30 seconds. If  
a critical situation is detected when driving off, a  
visual and acoustic warning is given indicating  
that the driver must now take control of the vehi‐  
cle. The vehicle is not accelerated any further.  
Active Distance Assist DISTRONIC is only an aid.  
The driver is responsible for keeping a safe dis‐  
tance to the vehicle in front, for vehicle speed  
and for braking in good time.  
R
Plug-in hybrid: drive program selected,  
observe the relevant notes in the Supple‐  
ment.  
R
Maximum speed, e.g. winter tire limit  
Other features of Active Distance Assist  
DISTRONIC:  
R
Adjusts the driving style depending on the  
selected drive program (fuel efficient, com‐  
fortable or dynamic) (/ page 165)  
Active Distance Assist DISTRONIC maintains the  
set speed on free-flowing roads. If vehicles in  
front are detected, the set distance is main‐  
tained, if necessary, until the vehicle comes to a  
halt. The vehicle accelerates or brakes depend‐  
ing on the distance to the vehicle in front and  
R Vehicles with Driving Assistance Pack‐  
age: reacts to stationary vehicles detected in  
urban speed ranges (except bicycles and  
motorcycles).  
202 Driving and parking  
System limits  
The system may be impaired or may not function  
in the following situations:  
&
&
WARNING Risk of accident from acceler‐  
ation or braking by Active Distance  
Assist DISTRONIC  
WARNING Risk of accident due to insuf‐  
ficient deceleration by Active Distance  
Assist DISTRONIC  
R
In snow, rain, fog, heavy spray, if there is  
glare, in direct sunlight or in greatly varying  
ambient light.  
If there is swirling dust, e.g. when driving off-  
road or on sandy surfaces.  
The windshield in the area of the camera is  
dirty, fogged up, damaged or covered.  
If the radar sensors are dirty or covered.  
In parking garages or on roads with steep  
uphill or downhill gradients.  
If there are narrow vehicles in front, such as  
bicycles or motorcycles.  
Active Distance Assist DISTRONIC may accel‐  
erate or brake in the following cases, for  
example:  
Active Distance Assist DISTRONIC brakes  
your vehicle with up to 50% of the maximum  
possible deceleration. If this deceleration is  
not sufficient, Active Distance Assist  
DISTRONIC alerts you with a visual and  
acoustic warning.  
R
R
R
If the vehicle pulls away using Active Dis‐  
tance Assist DISTRONIC.  
R
If the stored speed is called up and is  
#
In these cases, adjust your speed and  
keep a sufficient distance.  
considerably faster or slower than the  
currently driven speed.  
R
R
#
Brake the vehicle yourself and/or take  
evasive action.  
R
If Active Distance Assist DISTRONIC no  
longer detects a vehicle in front or does  
not react to relevant objects.  
R
&
WARNING Risk of accident if detection  
function of Active Distance Assist  
DISTRONIC is impaired  
#
Always carefully observe the traffic con‐  
ditions and be ready to brake at all  
times.  
In addition, on slippery roads, braking or accel‐  
erating can cause one or several wheels to lose  
traction and the vehicle could then skid.  
Do not use Active Distance Assist DISTRONIC in  
these situations.  
Active Distance Assist DISTRONIC does not  
react or has a limited reaction:  
#
Take into account the traffic situation  
before calling up the stored speed.  
R
when driving on a different lane or when  
changing lanes  
Driving and parking 203  
To activate Active Distance Assist  
DISTRONIC: press rocker switch 3 up (SET  
+) or down (SET-), or press rocker switch 4  
up (RES). Remove your foot from the acceler‐  
ator pedal.  
#
R
Parking Assist PARKTRONIC is not being  
used to park the vehicle or to exit from a  
parking space.  
DSR is deactivated.  
The vehicle does not skid.  
R
to pedestrians, animals, bicycles or sta‐  
tionary vehicles, or unexpected obstacles  
to complex traffic conditions  
R
R
R
R
to oncoming vehicles and crossing traffic  
The current speed is stored and maintained  
by the vehicle.  
As a result, Active Distance Assist  
DISTRONIC may neither give warnings nor  
intervene in such situations.  
or  
#
To activate Active Distance Assist  
DISTRONIC with a stored speed: press  
rocker switch 4 up (RES). Remove your foot  
from the accelerator pedal.  
#
Always observe the traffic conditions  
carefully and react accordingly.  
Operating Active Distance Assist DISTRONIC  
Requirements:  
% By pressing rocker switch 4 up again, the  
speed limitation shown in the instrument  
cluster will be adopted by Active Distance  
Assist DISTRONIC.  
R
The vehicle has been started.  
R
The electric parking brake is released.  
ESP® is activated and is not intervening.  
R
#
To accept the displayed speed restriction  
R
The transmission is in position h.  
when Active Distance Assist DISTRONIC  
is active: press rocker switch 4 up (RES).  
The speed limit displayed in the instrument  
cluster is adopted as the stored speed. The  
vehicle adapts its speed to that of the vehicle  
in front, but only up to the stored speed.  
R
The driver's door is closed.  
R
The check of the radar sensor system has  
been successfully completed (vehicle travel‐  
ing faster than 12 mph (20 km/h))  
#
To activate/deactivate Active Distance  
Assist DISTRONIC: press button 1.  
204 Driving and parking  
#
#
#
#
To pull away with Active Distance Assist  
To deactivate Active Distance Assist  
DISTRONIC: press rocker switch 4 down  
(CNCL).  
To increase/reduce speed: press rocker  
switch 3 up (SET+) or down (SET-) to the  
pressure point.  
To increase or reduce the specified dis‐  
tance from the vehicle in front: press  
rocker switch 2 up or down.  
DISTRONIC: remove your foot from the  
brake pedal and activate Active Distance  
Assist DISTRONIC.  
#
Press rocker switch 4 up (RES).  
Function of Active Speed Limit Assist  
or  
#
% The following function is country-dependent  
and only available in conjunction with the  
Driving Assistance Package.  
The stored speed is increased or reduced by  
1 mph (1 km/h).  
Depress the accelerator pedal briefly and  
firmly.  
The functions of Active Distance Assist  
DISTRONIC continue to be carried out.  
or  
#
Press rocker switch 3 up (SET+) or down  
(SET-) to the pressure point and hold.  
The stored speed is increased or reduced in  
increments of 1 mph (1 km/h).  
&
WARNING Risk of accident due to Active  
Distance Assist DISTRONIC still being  
activated when you leave the driver's  
seat  
or  
#
Press rocker switch 3 up (SET+) or down  
(SET-) beyond the pressure point.  
The stored speed is increased or reduced by  
5 mph (10 km/h).  
If you leave the driver's seat while the vehicle  
is being braked by Active Distance Assist  
DISTRONIC only, the vehicle can roll away.  
#
Always deactivate Active Distance  
or  
#
Assist DISTRONIC and secure the vehi‐  
cle to prevent it from rolling away  
before you leave the driver's seat.  
Press rocker switch 3 up (SET+) or down  
(SET-) and hold beyond the pressure point.  
The stored speed is increased or reduced in  
increments of 5 mph (10 km/h).  
Driving and parking 205  
If a change in the speed limit is detected and  
automatic adoption of speed limits is activated,  
the new speed is automatically adopted as the  
stored speed (/ page 241).  
The driven speed is adjusted when the vehicle is  
level with the traffic sign at the latest. In the  
case of signs indicating entry into an urban area,  
the speed is adapted according to the speed  
permitted within the urban area. The speed limit  
display in the Instrument Display is always upda‐  
ted when the vehicle is level with the traffic sign.  
If there is no speed restriction on an unlimited  
stretch of road (e.g. on a freeway), the recom‐  
mended speed is automatically adopted as the  
stored speed. The system uses the speed stored  
on an unlimited stretch of road as the recom‐  
mended speed. If you do not alter the stored  
speed on an unlimited stretch of road, the rec‐  
ommended speed is 80 mph (130 km/h).  
If Active Distance Assist DISTRONIC has been  
put into passive mode by pressing the accelera‐  
tor pedal, only speed limits which are higher  
than the set speed are adopted.  
Active Speed Limit 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. The maximum permissi‐  
ble speed also depends on factors such as the  
road surface and traffic conditions.  
#
#
Ensure that the driven speed complies  
with traffic regulations.  
Adjust the driving speed to suit current  
traffic and weather conditions.  
Function of route-based speed adaptation  
System limits  
Temporary speed restrictions (e.g. for a certain  
time or due to weather conditions) cannot be  
properly detected by the system. The maximum  
permissible speed applying to a vehicle with a  
trailer is not detected by the system. In these sit‐  
uations you must adjust your speed yourself.  
% The following function is country-dependent  
and only available in conjunction with the  
Driving Assistance Package.  
When Active Distance Assist DISTRONIC is acti‐  
vated, the vehicle speed will be adjusted accord‐  
ingly to the route events ahead. Depending on  
the drive program selected, the vehicle negoti‐  
ates a route event ahead in a fuel-saving, com‐  
fortable or dynamic manner. When the route  
event has been passed, the vehicle accelerates  
again to the stored speed. The set distance to  
the vehicle in front, vehicles detected ahead and  
speed restrictions ahead are taken into account.  
&
WARNING Risk of accident due to Active  
Speed Limit Assist adapting the vehicle's  
speed  
The speed adopted by Active Speed Limit  
Assist may be too high or incorrect in some  
individual cases, such as:  
R
In the wet or in fog  
Route-based speed adaptation can be config‐  
ured in the multimedia system (/ page 206).  
R
When towing a trailer  
206 Driving and parking  
The following route events are taken into  
account:  
adaptation does not brake the vehicle to a stand‐  
still.  
When route guidance is active, the first speed  
adjustment is carried out automatically. If the  
turn signal indicator is switched on, the selected  
route is confirmed and further speed adjustment  
is activated.  
&
WARNING Risk of accident in spite of  
route-based speed adjustment  
R
Bends  
Route-based speed adjustment might mal‐  
function or be temporarily unavailable in the  
following situations:  
R
T-intersections, traffic circles and toll sta‐  
tions  
R
Turns and exits  
R
If map data is not up to date or available  
If you do not follow the selected route  
guidance  
R
Traffic jams ahead (only with Live Traffic  
(/ page 351))  
R
Speed adjustment is canceled in the following  
cases:  
R
If the set route is re-planned  
In road construction areas  
When towing a trailer  
In bad weather or road conditions  
% When the toll station is reached, Active Dis‐  
tance Assist DISTRONIC adopts the speed as  
the stored speed.  
Also, the speed is reduced if the turn signal indi‐  
cator to change lanes is switched on and one of  
the following situations is detected:  
R
If the turn signal indicator is switched off  
before the route event.  
R
R
If the driver depresses the accelerator or  
brake pedal during the process.  
R
R
System limits  
R
If the accelerator pedal is depressed  
Route-based speed adaptation does not take  
right of way regulations into account. The driver  
is responsible for complying with road traffic  
regulations and driving at a suitable speed.  
R
Turning off at intersections  
#
Adjust the speed to the traffic situation.  
R
Driving on slowing-down lanes  
R
Driving on lanes adjacent to slowing-down  
lanes  
Setting route-based speed adaptation  
Requirements:  
In difficult conditions, for example unclear roads,  
lane narrowing, wet road surfaces, snow or ice,  
or when driving with a trailer, the speed adjust‐  
ment made by the system may not always be  
suitable. In these situations the driver must  
intervene accordingly.  
The driver is responsible for choosing the right  
speed and observing other road users. This  
applies in particular to intersections, traffic cir‐  
cles and traffic lights, as route-based speed  
R
Active Distance Assist DISTRONIC is activa‐  
ted.  
Driving and parking 207  
Multimedia system:  
% Depending on the country, in the lower  
speed range Active Steering Assist can use  
the surrounding traffic as a reference. If nec‐  
essary, Active Steering Assist can then also  
provide assistance when driving outside the  
center of the lane to form a rescue lane, for  
example.  
When the system is actively steering, the à  
symbol is shown in green in the multifunction  
display.  
expect a change from active to passive mode or  
vice versa at any time.  
4
5
5
©
Settings  
Assistance  
5
Route-based Speed  
#
Activate or deactivate the function.  
When the function is active, the vehicle  
speed is adjusted depending on the route  
events ahead.  
% Further information on the route-based  
speed adaptation (/ page 205).  
If the detection of lane markings and vehicles  
ahead is impaired, Active Steering Assist  
switches to passive mode. The system provides  
no support in this case. During the transition  
from active to passive status, the à symbol is  
shown as enlarged and flashing. Once the sys‐  
tem is passive, the à symbol is shown as  
gray in the multifunction display.  
Active Steering Assist  
Function of Active Steering Assist  
If the system detects that the driver has not  
steered the vehicle for a considerable period of  
time or has removed their hands from the steer‐  
ing wheel, an optical warning is given first. Dis‐  
play 1 appears in the multifunction display. If  
the driver still does not steer the vehicle, or  
gives no confirmation to the system, a warning  
tone sounds in addition to the visual warning  
message.  
% The following function is country-dependent  
and only available in conjunction with the  
Driving Assistance Package.  
Active Steering Assist is only available up to a  
speed of 130 mph (210 km/h). The system helps  
you to stay in the center of the lane by means of  
moderate steering interventions. Depending on  
the speed driven, Active Steering Assist uses the  
vehicles ahead and lane markings as a refer‐  
ence.  
Steering and touch detection  
The driver is required to keep their hands on the  
steering wheel at all times and be able to inter‐  
vene at any time to correct the course of the  
vehicle and keep it in lane. The driver must  
The warning is not issued, or is stopped, when  
the driver gives confirmation to the system:  
R
The driver steers the vehicle.  
208 Driving and parking  
R
R
R
R
R
The driver presses a steering wheel button or  
Insufficient road illumination.  
When actively changing lane without switch‐  
ing on the turn signal indicator.  
When the tire pressure is too low.  
operates Touch Control.  
The windshield is dirty, fogged up, damaged  
or covered in the vicinity of the camera, e.g.  
by a sticker.  
No, or several, unclear lane markings are  
present for one lane, or the markings change  
quickly, e.g. in a construction area or inter‐  
sections.  
The lane markings are worn away, dark or  
covered up, e.g. by dirt or snow.  
The distance to the vehicle in front is too  
small and the lane markings thus cannot be  
detected.  
If Active Steering Assist detects that a system  
limit has been reached, a visual warning is  
issued and a warning tone sounds.  
Active Steering Assist is only an aid. The driver is  
responsible for the distance to the vehicle in  
front, for vehicle speed, for braking in good time  
and for staying in lane. Before changing lanes,  
the driver must make sure that the neighboring  
lane is free (glance over the shoulder).  
Depending on the selected vehicle settings,  
Active Steering Assist may be unavailable.  
Observe the status display of Active Steering  
Assist in the multifunction display  
(/ page 211).  
R
R
R
&
WARNING Risk of accident if Active  
Steering Assist unexpectedly stops func‐  
tioning  
System limits  
If the system limits of Active Steering Assist  
are reached there is no guarantee that the  
system will remain active or will keep the  
vehicle in lane.  
Active Steering Assist has a limited steering tor‐  
que for lateral guidance. In some cases, the  
steering intervention is not sufficient to keep the  
vehicle in the lane or to drive through exits.  
R
R
The road is narrow and winding.  
There are obstacles on the lane or projecting  
out into the lane, such as object markers.  
#
Always keep your hands on the steering  
wheel and observe the traffic carefully.  
Always steer the vehicle paying atten‐  
tion to traffic conditions.  
The system may be impaired or may not function  
in the following instances:  
The system does not provide assistance in the  
following conditions:  
#
R
There is poor visibility, e.g. due to snow, rain,  
fog, heavy spray, greatly varying ambient  
light or strong shadows on the roadway.  
R
On tight bends and when turning.  
When crossing intersections.  
R
R
At traffic circles or toll stations.  
When towing a trailer.  
R
There is glare, e.g. from oncoming traffic,  
direct sunlight or reflections.  
R
Driving and parking 209  
Active Lane Change Assist supports the driver  
when changing lanes by applying steering torque  
if the driver operates a turn signal indicator.  
Assistance when changing lanes is provided if all  
the following conditions are met:  
&
WARNING Risk of accident if Active  
Steering Assist unexpectedly intervenes  
A malfunction in the detection of lane mark‐  
ings and objects can occur.  
This could cause unexpected steering inter‐  
vention.  
R
You are driving on a freeway or road with  
multiple lanes in the direction of travel.  
#
Steer according to traffic conditions.  
R
The neighboring lane is separated by a bro‐  
ken lane marking.  
Activating/deactivating Active Steering  
Assist  
Requirements:  
R
No vehicle is detected in the adjacent lane.  
If no vehicle is detected in the adjacent lane and  
a lane change is permitted, the lane change  
begins after the driver has activated the turn sig‐  
nal indicator. This is shown to the driver with a  
green arrow 2 next to the steering wheel sym‐  
bol. The Lane Change to the Left message also  
appears, for example. If Active Lane Change  
Assist has been activated with the turn signal  
indicator but a lane change is not immediately  
possible, a gray arrow 1 appears next to the  
steering wheel symbol, which remains green.  
R
The driven speed is between 50 mph  
(80 km/h) and 110 mph (180 km/h).  
ESP® is activated, but is not intervening.  
R
R
Active Lane Change Assist is switched on in  
the multimedia system.  
R
Active Distance Assist DISTRONIC is activa‐  
ted.  
R
Active Steering Assist is switched on and  
active.  
Multimedia system:  
4
5
5
©
Settings  
Quick Access  
#
Select a Steering Assist.  
Function of Active Lane Change Assist  
When the lane change assistance starts, the turn  
signal indicator is automatically activated along  
with the display in the multifunction display.  
% The following function is country-dependent  
and only available in conjunction with the  
Driving Assistance Package.  
210 Driving and parking  
If the assistance graphic is shown when chang‐  
ing lanes, the lane change display appears with  
an additional arrow pointing towards the adja‐  
cent lane (/ page 211).  
If a lane change is not possible, the arrow fades  
out after a few seconds and a new lane change  
must be initiated. An immediate lane change is  
only possible on freeway sections without speed  
limits.  
If the system is impaired, Active Lane Change  
Assist may be canceled. If it is canceled, the  
Lane Change Canceled message appears in the  
multifunction display and a warning tone sounds.  
The system may also be impaired or may not  
function in the following situations:  
#
Monitor the lane change.  
R
The sensors in the rear bumper are dirty,  
&
WARNING Risk of accident if Lane  
Change Assist unexpectedly stops func‐  
tioning  
damaged or covered by a sticker or ice and  
snow, for example.  
R
The exterior lighting is malfunctioning.  
If the system limitations for Lane Change  
Assist have been reached, there is no guar‐  
antee that the system will remain active.  
Lane Change Assist cannot then assist you  
by applying steering torques.  
% The Active Lane Change Assist sensors  
adjust automatically while a certain distance  
is being driven after the vehicle has been  
delivered. Active Lane Change Assist is  
unavailable or only partially available during  
this teach-in period, no arrow appears next  
to the Ø Active Steering Assist symbol  
when the turn signal indicator is activated.  
#
Always monitor the lane change and  
keep your hands on the steering wheel.  
Observe the traffic conditions and steer  
and/or brake if necessary.  
&
WARNING Risk of accident from chang‐  
ing lane to an occupied adjacent lane  
Activating/deactivating Active Lane Change  
Assist  
System limits  
Lane Change Assist cannot always detect  
clearly if the adjacent lane is free.  
The lane change might be initiated although  
the adjacent lane is not free.  
The system limitations of Active Steering Assist  
apply to Active Lane Change Assist  
(/ page 207).  
Multimedia system:  
4
5
5
©
Settings  
Assistance  
5
Active Lane Change Assist  
#
Activate or deactivate the function.  
#
Before changing lanes, make sure that  
the neighboring lane is free and there is  
no danger to other road users.  
Function of Active Emergency Stop Assist  
If the driver continually ignores the visual or  
acoustic warning to put their hands on the steer‐  
Driving and parking 211  
R
Assistant display  
activating or deactivating Active Distance  
Assist DISTRONIC  
ing wheel, the Beginning Emergency Stop mes‐  
sage appears in the multifunction display. If the  
driver still does not respond, Active Distance  
Assist DISTRONIC reduces the speed. The vehi‐  
cle is decelerated in stages to a standstill.  
Depending on the country, at speeds below  
40 mph (60 km/h) the hazard warning lights  
switch on automatically.  
Overview of Active Distance Assist  
DISTRONIC displays in the instrument clus‐  
ter  
The assistance graphic and the status display  
show the status of the following functions in the  
instrument cluster:  
When the vehicle is stationary, the following  
actions are carried out:  
R
Active Distance Assist DISTRONIC  
Route-based speed adaptation  
Active Steering Assist  
R
the vehicle is secured with the electric park‐  
ing brake  
R
1
Route-based speed adaptation: type of route  
event  
R
R
R
R
Active Distance Assist DISTRONIC is ended  
the vehicle is unlocked  
if possible, an emergency call is placed to  
the Mercedes-Benz emergency call center  
2
3
4
5
Vehicle in front  
Distance indicator  
Set specified distance  
Active Lane Change Assist lane change dis‐  
play  
The driver can cancel the deceleration at any  
time by performing one of the following actions:  
R
steering  
R
braking or accelerating  
R
pressing a steering-wheel button  
R
operating Touch Control  
212 Driving and parking  
Active Distance Assist DISTRONIC status dis‐  
play and route-based speed adaptation  
adoption of the speed limit, are displayed in the  
control feedback of the multifunction display on  
a single line.  
3
4
5
Active Distance Assist DISTRONIC active,  
speed stored, no vehicle detected (bright  
vehicle symbol)  
Active Distance Assist DISTRONIC active,  
speed stored, vehicle detected (green vehi‐  
cle symbol)  
Active Steering Assist status display  
Active Distance Assist DISTRONIC and route-  
based speed adaptation active, speed stored  
% On highways or high-speed major roads, the  
green ç vehicle symbol is displayed cycli‐  
cally when the vehicle is ready to pull away.  
% If you depress the accelerator pedal beyond  
the setting of the Active Distance Assist  
DISTRONIC, the system is switched to pas‐  
sive mode. The ç Suspended message  
appears in the multifunction display.  
1
2
3
Gray steering wheel: Active Steering Assist  
switched on and passive  
Green steering wheel: Active Steering Assist  
switched on and active  
Flashing steering wheel: prompt to the driver  
to actively confirm or transition from active  
to passive status, system limits detected  
Speedometer  
1
2
Active Distance Assist DISTRONIC selected,  
set specified distance (number of segments  
below the vehicle)  
Active Distance Assist DISTRONIC deactiva‐  
ted, speed stored  
The stored speed is highlighted on the speedom‐  
eter. If the speed of the vehicle in front or the  
speed adjustment is less than the stored speed  
due to the route event ahead, the segments in  
the speedometer light up. Deactivation of Active  
Distance Assist DISTRONIC, as well as altera‐  
tions to the speed due to manual or automatic  
During the transition from active to passive sta‐  
tus, symbol 3 is shown as enlarged and flash‐  
Driving and parking 213  
HOLD function  
Activating/deactivating the HOLD function  
ing. Once the system is passive, symbol 1 is  
shown as gray in the multifunction display.  
HOLD function  
&
WARNING Risk of an accident due to the  
HOLD function being activated when you  
leave the vehicle  
The HOLD function holds the vehicle at a stand‐  
still without requiring you to depress the brake  
pedal, e.g. while waiting in traffic.  
Function of Hill Start Assist  
Hill Start Assist holds the vehicle for a short  
time when pulling away on a hill under the fol‐  
lowing conditions:  
If you leave the vehicle while only the HOLD  
function is braking the vehicle, the vehicle  
can roll away in the following situations:  
The HOLD function is only an aid. The responsi‐  
bility for the vehicle safely standing still remains  
with the driver.  
R
The transmission is in position h or k.  
R
If there is a malfunction in the system or  
in the power supply.  
System limits  
R
The electric parking brake is released.  
The HOLD function is only intended to provide  
assistance when driving and is not a sufficient  
means of safeguarding the vehicle against rolling  
away when stationary.  
R
If the HOLD function is deactivated by  
This gives you enough time to move your foot  
from the brake pedal to the accelerator pedal  
and depress it before the vehicle begins to roll  
away.  
depressing the accelerator pedal or brake  
pedal, e.g. by a vehicle occupant.  
#
Always deactivate the HOLD function  
R
The incline must not be greater than 30%.  
and secure the vehicle against rolling  
away before leaving the vehicle.  
&
WARNING Risk of accident and injury  
due to the vehicle rolling away  
After a short time, Hill Start Assist no longer  
holds the vehicle and it can roll away.  
#
Therefore, swiftly move your foot from  
the brake pedal to the accelerator  
pedal. Never attempt to leave the vehi‐  
cle if it is being held by Hill Start Assist.  
214 Driving and parking  
NOTE Damage from automatic braking  
R
R
R
The electric parking brake is released.  
Active Distance Assist DISTRONIC is deacti‐  
vated.  
The vehicle is secured with the electric park‐  
ing brake.  
*
If one of the following functions is switched  
on, the vehicle brakes automatically in cer‐  
tain situations:  
In the following situations, the vehicle is held by  
The transmission is in position h, k or i. transmission position j or by the electric park‐  
R
ing brake:  
R
Activating the HOLD function  
#
R
Active Brake Assist  
The seat belt is unfastened and the driver's  
door is opened.  
The vehicle is switched off.  
There is a malfunction in the system or the  
power supply is insufficient.  
R
R
R
Depress the brake pedal and after a short  
Active Distance Assist DISTRONIC  
HOLD function  
Active Parking Assist  
time quickly depress further until the ë  
R
R
display appears in the multifunction display.  
#
Release the brake pedal.  
To avoid damage to the vehicle, deactivate  
these systems in the following or similar sit‐  
uations:  
Deactivating the HOLD function  
#
Depress the accelerator pedal to pull away.  
AIR BODY CONTROL  
or  
#
#
During towing  
AIR BODY CONTROL function  
Depress the brake pedal until the ë dis‐  
play disappears from the multifunction dis‐  
play.  
#
In a car wash  
AIR BODY CONTROL is an air suspension system  
with variable damping for improved driving com‐  
fort. The all-round level control system ensures  
the best possible suspension and constant  
ground clearance, even with a laden vehicle.  
When driving at speed, the vehicle is lowered  
automatically to improve driving safety and to  
reduce fuel consumption. You also have the  
option of manually adjusting the vehicle level.  
Requirements:  
The HOLD function is deactivated in the follow‐  
ing situations:  
R
The vehicle is stationary.  
R
The driver's door is closed or the seat belt on  
the driver's side is fastened.  
R
Active Distance Assist DISTRONIC is activa‐  
ted.  
R
The engine is running or has been automati‐  
R
The transmission is switched to position j.  
cally switched off by the ECO start/stop  
function.  
Driving and parking 215  
R
R
R
R
AIR BODY CONTROL includes the following com‐  
ponents and functions:  
speed-dependent lowering to reduce fuel  
consumption  
manually selectable high level setting for  
greater ground clearance  
ADS PLUS (Adaptive Damping System with  
constant damping force adjustment)  
DYNAMIC SELECT switch and level button  
R
air suspension with variable spring rate  
R
automatic level control system  
Available suspension settings  
Drive program  
Characteristics  
R
A (Comfort)  
The suspension setting is comfortable.  
The vehicle is set to the normal level.  
When driving at speeds of above 78 mph (125 km/h) the vehicle is lowered.  
When driving at speeds below 50 mph (80 km/h) the vehicle is raised again.  
R
R
R
R
R
R
; (Eco)  
The suspension setting is comfortable.  
The vehicle is set to low level -1.  
The vehicle is not lowered any further if you are traveling at higher speeds.  
R
R
R
C (Sport)  
The suspension setting is firmer.  
The vehicle is set to low level -1.  
The vehicle is not lowered any further if you are traveling at higher speeds.  
216 Driving and parking  
Drive program  
Characteristics  
R
B (Sport +)  
The suspension setting is even firmer.  
R
The vehicle is set to low level -1.  
R
The vehicle is not lowered any further if you are traveling at higher speeds.  
Vehicles with Off-road pack‐  
age:  
F (Off-road)  
R
R
R
R
The suspension setting is suitable for off-road terrain.  
The vehicle is set to the high level +1.  
When driving at speeds above approximately 50 mph (80 km/h), the vehicle is lowered.  
When driving at speeds below approximately 28 mph (45 km/h), the vehicle is raised.  
G (Off-road +)  
Setting the vehicle level  
Differences between different vehicle levels  
compared to the normal level (0):  
#
Always choose a vehicle level which is  
suited to the driving style and the road  
surface conditions.  
&
WARNING Risk of accident because  
R High level (+2):(only vehicles with Off-  
vehicle level is too high  
road package): approx. +2.0 in (+50 mm)  
If you drive at a higher vehicle level, the driv‐  
ing characteristics may be impaired due to  
the higher vehicle center of gravity.  
The vehicle can drift outwards, for example,  
when steering or cornering.  
R
&
High level +1: approx. +1.2 in (+30 mm)  
Low level -1: approx. -0.6 in (-15 mm)  
WARNING Risk of entrapment from vehi‐  
cle lowering  
R
When lowering the vehicle, people could  
become trapped if their limbs are between  
the vehicle body and the tires or underneath  
the vehicle.  
Driving and parking 217  
Raising the vehicle  
#
Make sure no one is underneath the  
vehicle or in the immediate vicinity of  
the wheel arches when the vehicle is  
being lowered.  
NOTE Damage due to vehicle lowering  
*
Parts of the body could be damaged when  
the vehicle is lowered.  
#
Make sure that there are no obstacles  
such as curbs underneath or in the  
immediate vicinity of the body when the  
vehicle is being lowered.  
&
WARNING Risk of becoming trapped  
due to the vehicle lowering  
Vehicles with AIR BODY CONTROL or  
level control system: when you unload lug‐  
gage or leave the vehicle, the vehicle first  
rises slightly and then returns to the set level  
shortly afterwards.  
You or anyone else in the vicinity of the  
wheel arches or the underbody could thus  
become trapped.  
Requirements:  
R
The vehicle has been started.  
Vehicles without Off-road package: the  
vehicle must not be moving faster than  
37 mph (60 km/h).  
R
R Vehicles with Off-road package:  
-
If drive program A, ;, C or  
The vehicle can also be lowered after being  
locked.  
B is selected: the vehicle must not be  
#
Press button 1.  
moving faster than 37 mph (60 km/h).  
Indicator lamp 2 lights up.  
#
When leaving the vehicle, make sure  
that nobody is in the vicinity of the  
wheel arches or the underbody.  
-
If the F or G drive program is  
selected: the vehicle must not be moving  
faster than 12 mph (20 km/h).  
Vehicles without Off-road package: the  
vehicle is set to the high level +1.  
Vehicles with Off-road package:  
218 Driving and parking  
-
R
If drive program A, ;, C or  
If the F or G drive program is  
#
Make sure no one is underneath the  
vehicle or in the immediate vicinity of  
the wheel arches when the vehicle is  
being lowered.  
B is selected: the vehicle is set to the  
selected:  
high level +1.  
When driving faster than 12 mph  
(20 km/h).  
R
If the F or G drive program is  
selected: the vehicle is set to the high  
level +2.  
R
After changing a drive program using the  
DYNAMIC SELECT switch.  
Requirements:  
R
All vehicle doors are closed  
Your selection is saved.  
The vehicle is lowered again in the following sit‐  
uations:  
The vehicle is adjusted to the height of the last  
active drive program.  
R
There is no trailer coupled  
R
There is no bicycle rack installed  
Lowering the vehicle  
R
R Vehicles without Off-road package:  
The battery is sufficiently charged; if neces‐  
sary, start the engine  
#
Press button 1.  
-
When driving faster than 50 mph  
(80 km/h).  
When driving between 37 mph (60 km/h)  
Indicator lamp 2 goes out. The vehicle is  
adjusted to the height of the active drive pro‐  
gram.  
-
and 50 mph (80 km/h) for approximately  
three minutes.  
Lowering and raising the rear of the vehicle  
R Vehicles with Off-road package:  
&
WARNING Risk of entrapment from vehi‐  
-
If drive program A, ;, C or  
B is selected:  
cle lowering  
When lowering the vehicle, people could  
become trapped if their limbs are between  
the vehicle body and the tires or underneath  
the vehicle.  
When driving faster than 50 mph  
(80 km/h) or between 37 mph (60 km/h)  
and 50 mph (80 km/h) for approximately  
three minutes.  
Driving and parking 219  
Raising the rear of the vehicle  
Lowering the rear of the vehicle  
When the rear of the vehicle has been com‐  
pletely lowered, indicator lamp 2 remains  
lit.  
#
Check if the battery is sufficiently charged. If  
necessary, start the engine.  
Lowering is interrupted in the following situa‐  
tions:  
#
Pull switch 1 briefly.  
Indicator lamp 2 goes out.  
R
A vehicle door is opened  
The vehicle will be raised to the currently  
selected level.  
R
Switch 1 is pulled again  
R
The vehicle is being driven faster than  
% The vehicle is automatically set to the level  
of the most recently active drive program if  
you drive at speeds greater than 1.2 mph  
(2 km/h) with the rear of the vehicle low‐  
ered. The Vehicle Rising Please Wait mes‐  
sage appears in the multifunction display.  
1.2 mph (2 km/h)  
% The vehicle is automatically set to the level  
of the most recently active drive program if  
you drive at speeds greater than 1.2 mph  
(2 km/h) with the rear of the vehicle low‐  
ered. The Vehicle Rising Please Wait mes‐  
sage appears in the multifunction display.  
If the vehicle cannot be raised:  
#
Ensure that the battery is sufficiently  
charged; if necessary, start the engine.  
The raising process continues.  
If indicator lamp 2 flashes twice and the rear of  
#
Apply the electric parking brake.  
Shift the transmission to position j  
(/ page 169).  
Pull switch 1 in the right-hand cargo com‐  
partment trim briefly.  
Indicator lamp 2 flashes until the vehicle  
has been lowered.  
the vehicle does not lower:  
#
#
Make sure that the requirements are met.  
% Lowering the rear of the vehicle allows the  
vehicle to be loaded more easily. Observe  
the notes on loading the vehicle when doing  
this (/ page 106).  
#
220 Driving and parking  
Parking Assist PARKTRONIC  
Parking Assist PARKTRONIC display in the  
multimedia system  
the maneuvering area while maneuvering and  
parking in/exiting parking spaces.  
Function of Parking Assist PARKTRONIC  
In the standard setting, an intermittent warning  
tone sounds from a distance of approximately  
1.0 ft (0.3 m) to an obstacle in front and approx‐  
imately 3.3 ft (1.0 m) to an obstacle behind. A  
continuous warning tone sounds from a distance  
of approximately 0.7 ft (0.2 m). Using the Warn  
Early All Around setting in the multimedia sys‐  
tem, the warning tones for front and side impact  
protection can be set to sound at a greater dis‐  
tance of approximately 3.3 ft (1.0 m) in front and  
2.0 ft (0.6 m) on the sides (/ page 225).  
Vehicles with Active Parking Assist without a  
360° Camera  
Parking Assist PARKTRONIC is an electronic  
parking assistance system with ultrasound. It  
monitors the area around your vehicle using mul‐  
tiple sensors 1 on the front bumper and on the  
rear bumper. Parking Assist PARKTRONIC shows  
you the distance between your vehicle and a  
detected obstacle visually and audibly.  
%
The Warn Early All Around setting is always  
active at the rear of the vehicle.  
If Parking Assist PARKTRONIC is deactivated,  
Active Parking Assist is unavailable.  
Parking Assist PARKTRONIC is only an aid. It is  
not a substitute for your attention to the sur‐  
roundings. The responsibility for safe maneuver‐  
ing and parking remains with you. Make sure  
that there are no persons, animals or objects in  
Driving and parking 221  
R
R
Problems with Parking Assist PARKTRONIC  
Orange segments: obstacles at a distance  
between approx. 1.0 ft (0.3 m) and 2.0 ft  
(0.6 m)  
Red segments: obstacles at a very short  
distance of approx. 1.0 ft (0.3 m) or less  
System limits  
Parking Assist PARKTRONIC does not necessa‐  
rily take into account the following obstacles:  
R
Obstacles below the detection range, e.g.  
persons, animals or objects.  
Vehicles with Active Parking Assist and a 360°  
Camera  
R
Obstacles above the detection range, e.g.  
overhanging loads, overhangs or loading  
ramps of trucks.  
Vehicles without 360° Camera  
If Active Parking Assist is deactivated and an  
obstacle is detected in the path of the vehicle, a  
pop-up window for Parking Assist PARKTRONIC  
1 appears in the multimedia system at speeds  
below 6 mph (10 km/h).  
The sensors must be free of dirt, ice and slush.  
Otherwise, they may not function correctly.  
Clean the sensors regularly, especially after driv‐  
The color of the individual segments of the warn‐ ing off-road, taking care not to scratch or dam‐  
ing display is based on the distance to the detec‐ age them.  
ted obstacle:  
Vehicles with trailer hitch: Parking Assist  
R
Yellow segments: obstacles at a distance  
between approx. 2.0 ft (0.6 m) and 3.3 ft  
(1.0 m)  
PARKTRONIC is deactivated for the rear zone  
when you establish an electrical connection  
between your vehicle and a trailer.  
Vehicles with 360° Camera  
222 Driving and parking  
Problem  
Possible causes/consequences and M Solutions  
Parking Assist PARKTRONIC is malfunctioning and has been deactivated due to signal interference.  
Rear segments 1 or all-round seg‐  
ments 2 light up red. The é sym‐  
bol appears in the multifunction dis‐  
play.  
#
Start the vehicle again.  
#
Check if Parking Assist PARKTRONIC is working at a different location.  
The sensors are dirty.  
Rear segments 1 or all-round seg‐  
ments 2 light up red. At the same  
time, a warning tone sounds for  
approximately two seconds every time  
the vehicle is started. The é symbol  
appears in the multifunction display.  
#
Clean the sensors and observe the notes on care of vehicle parts (/ page 433).  
Parking Assist PARKTRONIC has been deactivated due to a malfunction.  
#
Start the vehicle again.  
#
If the problem persists, consult a qualified specialist workshop.  
Function of the passive side impact protec‐  
tion  
Segment color depending on distance  
bumper must first detect the object while you  
are driving past it.  
Color  
Lateral distance  
Passive side impact protection is an additional  
Parking Assist PARKTRONIC function which  
warns the driver about obstacles at the side of  
the vehicle. A warning is issued when obstacles  
are detected between the front and rear detec‐  
tion range. In order for an object on the side to  
be detected, the sensors in the front and rear  
During the parking procedure or maneuvering,  
objects are detected as the vehicle drives past.  
If you steer in the direction of a detected obsta‐  
cle and there is a risk of a lateral collision, a  
warning is issued. The segments on the sides  
light up yellow or red, depending on the distance  
to the obstacle.  
Yellow  
Approx. 1.0 - 2.0 ft  
(30 - 60 cm)  
Red  
Approx. < 1.0 ft  
(30 cm)  
Driving and parking 223  
System limits  
In order for lateral front or rear segments to be  
displayed, the vehicle must first travel a distance  
of at least half of the vehicle length. Once the  
vehicle has traveled the length of the vehicle, all  
of the lateral front and rear segments can be dis‐  
played.  
The system limits for Parking Assist  
PARKTRONIC apply to passive side impact pro‐  
tection.  
The following objects are not detected, for exam‐  
ple:  
R
Pedestrians who approach the vehicle from  
the side  
R
Objects placed next to the vehicle  
Activating/deactivating Parking Assist  
PARKTRONIC  
Parking Assist PARKTRONIC display: vehicles  
with a 360° Camera  
1
2
3
Operational front and rear  
Operational front, rear and sides  
Obstacles detected at the front right (red)  
NOTE Risk of an accident from objects  
at close range  
*
Parking Assist PARKTRONIC may not detect  
certain objects at close range.  
Saved obstacles on the sides are deleted in the  
following situations, for example:  
Parking Assist PARKTRONIC display: vehicles  
without a 360° Camera  
Operational front and rear  
Operational front, rear and sides  
Obstacle detected at the front right (yellow)  
and rear (red)  
#
When parking or maneuvering the vehi‐  
R
You park the vehicle and switch off the igni‐  
tion.  
1
2
3
cle, pay particular attention to any  
objects which are above or below the  
sensors, e.g. flower pots or drawbars.  
The vehicle or other objects could oth‐  
erwise be damaged.  
R
You open the doors.  
After the engine is restarted, obstacles on the  
sides must be detected again before a new  
warning can be issued.  
224 Driving and parking  
#
% Vehicles with AIR BODY CONTROL: you  
can activate or deactivate Parking Assist  
PARKTRONIC in the multimedia system  
(/ page 224).  
If indicator lamp 1 is not lit, Parking Assist  
PARKTRONIC is active. If the indicator lamp is lit  
or the é symbol appears in the multifunction  
display, Parking Assist PARKTRONIC is not  
active.  
Press button 2.  
Multimedia system:  
4
5
Settings  
Quick Access  
% Parking Assist PARKTRONIC is automatically  
5
activated when the vehicle is started.  
PARKTRONIC  
#
Activate or deactivate the function.  
Activating/deactivating Parking Assist  
PARKTRONIC (Vehicles with AIR BODY CON‐  
TROL)  
% Parking Assist PARKTRONIC is automatically  
activated when the vehicle is started.  
Activating/deactivating Parking Assist  
PARKTRONIC  
NOTE Risk of an accident from objects  
at close range  
*
Parking Assist PARKTRONIC may not detect  
certain objects at close range.  
NOTE Risk of an accident from objects  
at close range  
*
#
When parking or maneuvering the vehi‐  
Parking Assist PARKTRONIC may not detect  
certain objects at close range.  
cle, pay particular attention to any  
objects which are above or below the  
sensors, e.g. flower pots or drawbars.  
The vehicle or other objects could oth‐  
erwise be damaged.  
#
When parking or maneuvering the vehi‐  
cle, pay particular attention to any  
objects which are above or below the  
sensors, e.g. flower pots or drawbars.  
The vehicle or other objects could oth‐  
erwise be damaged.  
If the é symbol is shown in the multifunction  
display, Parking Assist PARKTRONIC is not  
active.  
If the é symbol is shown in the multifunction  
display, Parking Assist PARKTRONIC is not  
active.  
Driving and parking 225  
Reversing camera  
Multimedia system:  
when the vehicle is further away from an obsta‐  
cle.  
4
5
Settings  
Quick Access  
Function of the rear view camera  
5
#
Select Warn Early All Around.  
PARKTRONIC  
#
#
Activate or deactivate the function.  
Activate or deactivate the function.  
% Parking Assist PARKTRONIC is automatically  
Activating/deactivating audio fadeout  
You can specify whether the volume of a media  
source in the multimedia system is to be  
reduced when Parking Assist PARKTRONIC  
sounds a warning tone.  
activated when the vehicle is started.  
Adjusting the warning tones of Parking  
Assist PARKTRONIC  
Multimedia system:  
#
Select Audio Fadeout During Warning Tones.  
4
5
5
©
Settings  
Assistance  
#
5
Activate or deactivate the function.  
Camera & Parking  
Adjusting the volume of the warning tones  
#
Select Warning Tone Volume.  
#
Set a value.  
Adjusting the pitch of the warning tones  
#
Select Warning Tone Pitch.  
Set a value.  
When you engage reverse gear, the image from  
rear view camera 1 is shown in the media dis‐  
play. Dynamic guide lines show the path the  
vehicle will take with the steering wheel in its  
current position. This helps you to orient your‐  
self and to avoid obstacles when backing up.  
#
Specifying the starting point for the warning  
tones  
You can specify whether the Parking Assist  
PARKTRONIC warning tones should commence  
226 Driving and parking  
The rear view camera is only an aid. It is not a  
substitute for your attention to the surroundings.  
The responsibility for safe maneuvering and  
parking remains with you. Make sure that there  
are no persons, animals or objects etc., in the  
maneuvering area while maneuvering and park‐  
ing.  
The guide lines in the media display show the  
distances to your vehicle. The distances dis‐  
played only apply to road level.  
Normal view  
Wide-angle view  
Depending on the vehicle equipment, you can  
select from the following views:  
1
Yellow guide line, vehicle width (driven sur‐  
face) depending on the current steering  
wheel angle (dynamic)  
Yellow guide line at a distance of approx‐  
imately 3.3 ft (1.0 m) from the rear area  
Yellow lane marking the course the tires will  
take at the current steering wheel angle  
(dynamic)  
R
Normal view  
R
Wide-angle view  
2
3
R
Trailer view  
The area behind the vehicle is displayed as a  
mirror image, as in the inside rearview mirror.  
Vehicles without Active Parking Assist  
The following camera views are available in the  
multimedia system:  
4
5
Bumper  
Red guide line at a distance of approximately  
1.0 in (0.3 m) from the rear area  
Trailer view (vehicles with a trailer hitch)  
1
Yellow guide line, locating aid  
Driving and parking 227  
If the system fails at the rear, the display of  
the segments changes as follows:  
2
3
2
Red guide line at a distance of approximately  
1.0 in (0.3 m) from the ball head of the  
trailer hitch  
Yellow guide line, vehicle width (driven sur‐  
face) depending on the current steering  
wheel angle (dynamic)  
Red guide line at a distance of approximately  
1.0 in (0.3 m) from the rear area  
Yellow warning display of Parking Assist  
PARKTRONIC: obstacles are at a distance of  
between approximately 2.0 ft (0.6 m) and  
3.3 ft (1.0 m)  
R
The rear segments are shown in red  
when backing up.  
3
4
Ball head of the trailer hitch  
R
The rear segments are hidden when driv‐  
ing forwards.  
Vehicles with Active Parking Assist  
The following camera views are available in the  
multimedia system:  
If Parking Assist PARKTRONIC is deactivated,  
the warning display fades out (/ page 221).  
5
6
Red warning display of Parking Assist  
PARKTRONIC: obstacles are very close  
(approximately 1.0 ft (0.3 m) or less)  
Orange warning display of Parking Assist  
PARKTRONIC: obstacles are a medium dis‐  
tance away (between approximately 1.0 ft  
(0.3 m) and 2.0 ft (0.6 m))  
% If the entire system fails, the segments of  
the warning display are shown in red. The  
indicator lamp on the PARKTRONIC button  
lights up and the é symbol appears in  
the multifunction display.  
Normal view  
1
Yellow lane marking the course the tires will  
take at the current steering wheel angle  
(dynamic)  
Wide-angle view  
228 Driving and parking  
R
R
The camera lens is obstructed, dirty or fog‐  
ged up. Observe the notes on cleaning the  
rear view camera (/ page 433).  
The camera or rear passenger compartment  
of your vehicle is damaged. In this case, have  
the camera and its position and setting  
checked at a qualified specialist workshop.  
% Have the display repaired or replaced if, for  
example, pixel errors considerably restrict its  
use.  
360° camera  
Function of the 360° Camera  
The 360° Camera is a system that consists of  
four cameras. The cameras cover the immediate  
vehicle surroundings. The system assists you,  
e.g. when parking or at exits with reduced visibil‐  
ity.  
% Do not use the rear view camera in these  
types of situation. You could otherwise injure  
others or collide with objects when parking  
the vehicle.  
Trailer view (vehicles with a trailer hitch)  
1
2
Yellow guide line, locating aid  
If the vehicle is carrying a heavy load, leaving the  
standard height can result in inaccuracies in the  
guide lines and in the display of the generated  
images, depending on technical conditions.  
The field of vision and other functions of the rear  
view camera may be restricted due to additional  
accessories on the rear of the vehicle (e.g.  
license plate bracket or bicycle rack).  
% The contrast of the display may be impaired  
by direct sunlight or by other light sources,  
e.g. when driving out of a garage. In this  
case, pay particular attention.  
The views of the 360° Camera are always availa‐  
ble when driving forwards up to a speed of  
approx. 10 mph (16 km/h) and when backing  
up.  
The 360° Camera is only an aid and may show a  
distorted view of obstacles, show them incor‐  
rectly or not show them at all. It is not a substi‐  
tute for your attention to the surroundings. The  
responsibility for safe maneuvering and parking  
remains with you. Make sure that there are no  
persons, animals or objects etc., in the maneu‐  
vering area while maneuvering and parking.  
Red guide line at a distance of approximately  
1.0 in (0.3 m) from the ball head of the  
trailer hitch  
3
Ball head of the trailer hitch  
System limits  
The rear view camera will not function or will  
only partially function in the following situations:  
R
The tailgate is open.  
There is heavy rain, snow or fog.  
The ambient light conditions are poor, e.g. at  
night.  
R
R
Driving and parking 229  
The system evaluates images from the following  
cameras:  
The color of the individual segments of warning  
display 2 is based on the distance to the detec‐  
ted obstacle:  
5
6
Top view with image from the rear view cam‐  
era  
Top view with trailer view (vehicles with a  
trailer hitch)  
R
R
R
Rear view camera  
Front camera  
Two side cameras in the outside mirrors  
R
Yellow segments: obstacles at a distance  
between approx. 2.0 ft (0.6 m) and 3.3 ft  
(1.0 m)  
Top view  
Views of the 360° Camera  
You can select from different views:  
R
Orange segments: obstacles at a distance  
between approx. 1.0 ft (0.3 m) and 2.0 ft  
(0.6 m)  
R
Red segments: obstacles at a very short  
distance of approx. 1.0 ft (0.3 m) or less  
When Parking Assist PARKTRONIC is operational  
and no object is detected, the segments of the  
warning display are shown in gray.  
% If the entire system fails, the segments of  
the warning display are shown in red. The  
indicator lamp on the PARKTRONIC button  
lights up and the é symbol appears in  
the multifunction display.  
1
2
3
Lane indicating the route the vehicle will  
take at the current steering wheel angle  
Warning display of Parking Assist  
PARKTRONIC  
1
2
3
Wide-angle view, front  
Top view with image from the front camera  
Top view with images from the side cameras  
in the outside mirrors  
Wide-angle view, rear  
If the system fails at the rear, the display of  
the segments changes as follows:  
Your vehicle from above  
R
The rear segments are shown in red  
when backing up.  
4
230 Driving and parking  
R
The rear segments are hidden when driv‐  
3
4
Red guide line at a distance of approximately  
12 in (0.3 m) from the rear area  
Mark at a distance of approx. 3.3 ft (1.0 m)  
ing forwards.  
If Parking Assist PARKTRONIC is deactivated,  
the warning display fades out (/ page 221).  
% When Active Parking Assist is active, lane  
markings 1 are displayed in green.  
The guide lines in the media display show  
the distances to your vehicle. The distances  
apply to road level.  
Guide lines  
In trailer mode, the guide lines are shown at  
the level of the trailer hitch.  
1
2
Yellow guide line, locating aid  
Trailer view (vehicles with a trailer hitch)  
If you select trailer view and no trailer is coupled  
to the vehicle, the following display appears:  
Red guide line at a distance of approximately  
12 in (0.3 m) to the ball head of the trailer  
hitch  
3
Ball head of the trailer hitch  
1
2
Yellow lane marking the course the tires will  
take at the current steering wheel angle  
(dynamic)  
Yellow guide line, vehicle width (driven sur‐  
face) depending on the current steering  
wheel angle (dynamic)  
Driving and parking 231  
System limits  
The 360° Camera will not function or will only  
partially function in the following situations:  
When the electrical connection is established  
between the vehicle and the trailer, the display  
changes to the side camera view.  
This view supports maneuvering procedures with  
a trailer.  
1
2
Guide line of external vehicle dimensions  
with outside mirrors folded out  
Marker of the wheel contact points  
R
The doors are open.  
System failure  
R
The side mirrors are folded in.  
If the 360° Camera is not ready for operation,  
the following message appears in the multimedia  
system:  
Side view of the mirror cameras  
The sides of the vehicle can be seen in this view.  
R
The tailgate is open.  
R
There is heavy rain, snow or fog.  
R
The ambient light conditions are poor, e.g. at  
night.  
R
The camera lens is obstructed, dirty or fog‐  
ged up.  
R
If cameras or vehicle components in which  
the cameras are installed are damaged. In  
232 Driving and parking  
Selecting a view for the 360° Camera  
this event, have the cameras, their positions  
and their setting checked at a qualified spe‐  
cialist workshop.  
then independently locates and measures paral‐  
lel and perpendicular parking spaces on both  
sides of the vehicle.  
#
Engage reverse gear.  
#
Select the desired view in the multimedia  
system (/ page 228).  
When Active Parking Assist has detected parking  
spaces, the È display appears in the multi‐  
function display. The arrows show on which side  
of the road detected parking spaces are located.  
They are then shown in the media display. The  
parking space and, if necessary, the parking  
direction can be selected as desired. Active  
Parking Assist calculates a suitable vehicle path,  
switches on the turn signal indicator and assists  
you in parking and exiting the parking space.  
Active Parking Assist provides assistance when  
changing gear, accelerating, braking and steer‐  
ing the vehicle.  
Active Parking Assist is only an aid. It is not a  
substitute for your attention to the surroundings.  
The responsibility for safe maneuvering and  
parking remains with you. Make sure that no  
persons, animals or objects etc. are in the  
maneuvering range.  
% Do not use the 360° Camera under such cir‐  
cumstances. You could otherwise injure oth‐  
ers or collide with objects when parking the  
vehicle.  
If the vehicle is carrying a heavy load, leaving the  
standard height can result in inaccuracies in the  
guide lines and in the display of the generated  
images, depending on technical conditions.  
The field of vision and other functions of the  
camera system may be restricted due to addi‐  
tional attachments on the vehicle (e.g. license  
plate bracket, bicycle rack).  
% The contrast of the display may be impaired  
by abrupt direct sunlight or by other light  
sources, e.g. when driving out of a garage. In  
this case, pay particular attention.  
Opening the camera cover of the rear view  
camera  
Multimedia system:  
4
5
5
©
Settings  
Assistance  
5
Camera & Parking  
#
Select Open Camera Cover.  
% The camera cover closes automatically after  
some time or after an ignition cycle.  
Active Parking Assist  
Function of Active Parking Assist  
Active Parking Assist is an electronic parking  
assistance system which uses ultrasound and is  
automatically activated during forward travel.  
The system is operational at speeds below  
approximately 22 mph (35 km/h).  
% Have the display repaired or replaced if, for  
example, pixel errors considerably restrict its  
use.  
See the notes on cleaning the 360° Camera  
(/ page 433).  
If all requirements are met, the Ç display  
appears in the multifunction display. The system  
Driving and parking 233  
Active Parking Assist is canceled if, among other  
things, one of the following actions is carried  
out:  
Do not use Active Parking Assist in the following  
situations:  
&
WARNING Risk of accident due to  
objects located above or below the  
detection range of Active Parking Assist  
R
In extreme weather conditions such as ice,  
packed snow or in heavy rain.  
R
Parking Assist PARKTRONIC is deactivated.  
If there are objects above or below the  
detection range, the following situations may  
arise:  
R
R
Active Parking Assist is deactivated.  
When transporting a load that protrudes  
beyond the vehicle.  
R
R
R
R
R
You begin steering.  
R
If the parking space is on a steep downhill or  
uphill gradient.  
R
Active Parking Assist may steer too early.  
You apply the parking brake.  
You engage transmission position j.  
ESP® intervenes.  
You open the doors or the tailgate while driv‐  
ing.  
R Vehicles with automatic transmis‐  
sion: The vehicle may not stop in front of  
these objects.  
R
When snow chains are installed.  
Active Parking Assist may also display parking  
spaces that are not suitable for parking, e.g. the  
following:  
This could cause a collision.  
#
In these situations, do not use Active  
Parking Assist.  
System limits  
R
Parking spaces where parking is prohibited.  
Objects located above or below the detection  
range of Parking Assist PARKTRONIC or Active  
Parking Assist are not detected when the park‐  
ing space is being measured. These are also not  
taken into account when the parking maneuver  
is calculated, e.g. overhanging loads, overhangs  
or loading ramps of trucks or the boundaries of  
parking spaces. In some circumstances, Active  
Parking Assist may therefore guide you into the  
parking space prematurely.  
R
Parking spaces on unsuitable surfaces.  
Snowfall or heavy rain may lead to a parking  
space being measured inaccurately. Parking  
spaces that are partially occupied by trailer  
drawbars might not be identified as such or be  
measured incorrectly. Only use Active Parking  
Assist on level, high-grip ground.  
Active Parking Assist will not assist you with  
parking spaces at right angles to the direction of  
travel in the following situations:  
R
If two parking spaces are located immedi‐  
ately next to each other.  
R
If the parking space is immediately next to a  
low obstacle such as a curb.  
234 Driving and parking  
Active Parking Assist will not assist you with  
parking spaces parallel or at right angles to the  
direction of travel in the following situations:  
R
If the parking space is on a curb.  
R
If the parking space is bordered by an obsta‐  
cle, e.g. a tree, a post or a trailer.  
Parking with Active Parking Assist  
% Depending on the vehicle's equipment, the  
button may also be located at a different  
position in the center console.  
The media display shows the view of Active Park‐  
ing Assist. Area 2 displays detected parking  
spaces 4 and vehicle path 3.  
% Vehicle path 3 shown on the media display  
may differ from the actual vehicle path.  
#
#
If you have driven past a parking space: bring  
the vehicle to a standstill.  
Press button 1.  
#
Select desired parking space 4.  
#
Where necessary, select the parking direc‐  
tion: forwards or reverse.  
Vehicle path 3 is shown, depending on  
selected parking space 4 and the parking  
direction.  
Driving and parking 235  
#
#
Exiting a parking space with Active Parking  
Confirm selected parking space 4.  
If, for example, the Please Engage Reverse  
Gear message appears in the media display:  
select the corresponding transmission posi‐  
tion.  
The vehicle drives into the selected parking  
space.  
Assist  
% The turn signal indicator is switched on auto‐  
matically when the parking procedure  
Requirements:  
R
The vehicle has been parked with Active  
Parking Assist.  
begins. The turn signal indicator is switched  
off automatically when you switch to h.  
Please note that you are responsible for the vehi‐  
cle and surroundings during the entire parking  
procedure.  
You are responsible for selecting the turn signal  
indicator in accordance with the traffic condi‐  
tions. If necessary, select the turn signal indica‐  
tor accordingly.  
On completion of the parking procedure, the  
Parking Assist Finished, Take Control of Vehicle  
display message appears. Further maneuvering  
may still be necessary.  
#
Start the vehicle.  
&
WARNING Risk of accident due to vehi‐  
cle swinging out while parking or pulling  
out of a parking space  
#
After completion of the parking procedure,  
safeguard the vehicle against rolling away.  
When required by legal requirements or local  
conditions: turn the wheels towards the curb.  
While parking or exiting a parking space, the  
vehicle swings out and can drive onto areas  
of the oncoming lane.  
This could cause you to collide with objects  
or other road users.  
% You can stop the vehicle and change the  
transmission position during the parking pro‐  
cedure. The system then calculates a new  
vehicle path. The parking procedure can  
then be continued. If no new vehicle path is  
available, the transmission position will be  
changed again. If the vehicle has not yet  
reached the parking space, the parking pro‐  
cedure will be canceled, should a gear be  
changed.  
#
Pay attention to objects and other road  
users.  
Where necessary, stop the vehicle or  
cancel the parking procedure with  
Active Parking Assist.  
#
236 Driving and parking  
&
WARNING Risk of accident due to vehi‐  
cle swinging out while parking or pulling  
out of a parking space  
While parking or exiting a parking space, the  
vehicle swings out and can drive onto areas  
of the oncoming lane.  
This could cause you to collide with objects  
or other road users.  
#
Pay attention to objects and other road  
users.  
#
If the vehicle has been parked at right angles  
to the direction of travel: in area 2, select  
direction of travel 3, left or right.  
#
Where necessary, stop the vehicle or  
cancel the parking procedure with  
Active Parking Assist.  
% The vehicle path shown on the media display  
may differ from the actual vehicle path.  
#
If, for example, the Please Engage Forward  
Gear message appears in the media display:  
select the corresponding transmission posi‐  
tion.  
The vehicle moves out of the parking space.  
The turn signal indicator is switched off auto‐  
matically.  
#
Press button 1.  
#
Confirm direction of exit 3 to drive out of  
the parking space.  
The media display shows the view of Active  
Parking Assist.  
% The turn signal indicator is switched on auto‐  
matically when the exiting procedure begins.  
You are responsible for selecting the turn signal  
indicator in accordance with the traffic condi‐  
tions. If necessary, select the turn signal indica‐  
tor accordingly.  
After the exiting procedure has been completed,  
the Parking Assist Finished, Take Control of  
Driving and parking 237  
If the wrong gear is selected.  
R
Vehicle message appears in the media display. A  
warning tone and the following display in the  
media display prompt you to take over control of  
the vehicle:  
In such cases, Drive Away Assist might:  
R
Warn you without reason and limit the  
vehicle speed.  
Drive Away Assist is active under the following  
conditions:  
R
R
Not warn you or not limit the vehicle  
speed.  
If Parking Assist PARKTRONIC is activated.  
Every time the gear is changed to k or h  
when the vehicle is at a standstill.  
If the detected obstacle is less than approx.  
3.3 ft (1.0 m) away.  
If the maneuvering assistant function is acti‐  
vated in the multimedia system.  
R
#
Always pay careful attention to the traf‐  
R
fic situation; do not rely on Drive Away  
Assist alone.  
You have to accelerate, brake, steer and change  
gear yourself again.  
#
R
Be prepared to brake or swerve as nec‐  
essary, provided the traffic situation  
permits and that it is safe to take eva‐  
sive action.  
Function of Drive Away Assist  
System limits  
The performance of Drive Away Assist is limited  
on inclines.  
When driving with a trailer, Drive Away Assist is  
not available.  
% Also observe the system limits of Parking  
Assist PARKTRONIC (/ page 220).  
Drive Away Assist can reduce the severity of an  
impact when pulling away. If an obstacle is  
detected in the direction of travel, the vehicle's  
speed is briefly reduced to approx. 1 mph  
(2 km/h). If a critical situation is detected, sym‐  
bol É appears in the media display.  
Drive Away Assist is only an aid. It is not a sub‐  
stitute for your attention to the surroundings.  
The responsibility for safe maneuvering and  
parking remains with you. Make sure that no  
persons, animals or objects etc. are in the  
maneuvering range.  
&
WARNING Risk of accident caused by  
limited detection performance of Drive  
Away Assist  
Function of Cross Traffic Alert  
% Also read the instructions on Blind Spot  
Assist (/ page 242).  
A risk of a collision may arise in the following sit‐  
uations, for example:  
Drive Away Assist cannot always clearly iden‐  
tify objects and traffic situations.  
R
If the driver mixes up the accelerator and  
brake pedals.  
238 Driving and parking  
R
R
ATTENTION ASSIST  
If the vehicle is backing up at walking pace.  
If the maneuvering assistant function is acti‐  
vated in the multimedia system.  
Function of ATTENTION ASSIST  
ATTENTION ASSIST assists you on long, monoto‐  
nous journeys, e.g. on highways and trunk roads.  
If ATTENTION ASSIST detects indicators of fati‐  
gue or increasing lapses in concentration on the  
part of the driver, it suggests taking a break.  
System limits  
Cross Traffic Alert is not available on inclines.  
Cross Traffic Alert is not available when driving  
with a trailer.  
% Also observe the system limits of Active  
Blind Spot Assist (/ page 242).  
ATTENTION ASSIST is only an aid. It cannot  
always detect fatigue or lapses in concentration  
in time. The system is not a substitute for a well-  
rested and attentive driver. On long journeys,  
take regular breaks in good time that allow for  
adequate recuperation.  
Vehicles with Blind Spot Assist: Cross Traffic  
Alert can warn drivers of any crossing traffic  
when backing up out of a parking space. The  
radar sensors in the bumper also monitor the  
area adjacent to the vehicle. If a critical situation  
is detected, symbol 1 appears in the media dis‐  
play. If the driver does not respond to the warn‐  
ing, the vehicle's brakes can be applied automat‐  
ically.  
If the radar sensors are obstructed by vehicles  
or other objects, detection is not possible.  
Cross Traffic Alert is active under the following  
conditions:  
Activating/deactivating maneuvering assis‐  
tance  
Multimedia system:  
You can choose between two settings:  
4
5
5
©
Settings  
Assistance  
5
R
Standard: normal system sensitivity.  
Camera & Parking  
#
R
Sensitive: higher system sensitivity. The  
Switch Maneuvering Assistance on or off.  
driver is warned earlier and the attention  
level detected by ATTENTION ASSIST is adap‐  
ted accordingly.  
% Maneuvering assistance must be active for  
the function of Drive Away Assist  
(/ page 237).  
If drowsiness or increasing lapses in concentra‐  
tion are detected, the ATTENTION ASSIST: Take  
a Break! warning appears in the Instrument Dis‐  
play. You can acknowledge the message and  
R
If Blind Spot Assist is activated.  
Driving and parking 239  
R
take a break where necessary. If you do not take If ATTENTION ASSIST is unable to calculate the  
If the road condition is poor (uneven road  
surface or potholes).  
If there is a strong side wind.  
If you adopt a sporty driving style (high cor‐  
nering speeds or high rates of acceleration).  
If the Steering Assist function of Active Dis‐  
tance Assist DISTRONIC is active.  
If the time has been set incorrectly.  
In active driving situations, if you change  
lanes and vary your speed frequently.  
a break and ATTENTION ASSIST continues to  
detect increasing lapses in concentration, you  
will be warned again after a minimum of  
15 minutes.  
attention level and cannot issue a warning, the  
System Suspended message appears.  
R
R
If a warning is given in the Instrument Display,  
the multimedia system offers to search for a rest  
area. You can select a rest area and start naviga‐  
tion to this rest area. This function can be activa‐  
ted and deactivated in the multimedia system.  
R
R
R
If ATTENTION ASSIST is deactivated, the Û  
symbol appears in the assistance graphic in the  
Instrument Display when the engine is running.  
ATTENTION ASSIST is activated automatically  
when the engine is re-started. The last selected  
sensitivity level remains stored.  
The ATTENTION ASSIST tiredness or alertness  
assessment is deleted and restarted when con‐  
tinuing the journey in the following situations:  
System limits  
ATTENTION ASSIST is active in the 37 mph  
(60 km/h) to 124 mph (200 km/h) speed range.  
The functionality of ATTENTION ASSIST is  
restricted, and warnings may be delayed or not  
occur at all in the following situations:  
R
If you switch off the engine.  
If you unfasten your seat belt and open the  
driver's door (e.g. changing drivers or taking  
a break).  
You can have the following status information for  
ATTENTION ASSIST displayed in the assistance  
menu of the on-board computer:  
R
R
The length of the journey since the last  
break.  
R
The attention level determined by ATTENTION  
ASSIST.  
R
If you have been driving for less than approx‐  
imately 30 minutes.  
240 Driving and parking  
Setting ATTENTION ASSIST  
Traffic Sign Assist  
R
When a village or city boundary which is  
stored in the digital map is passed.  
Multimedia system:  
Function of Traffic Sign Assist  
4
5
5
©
Settings  
Assistance  
The camera also detects traffic signs with a  
restriction indicated by an additional sign (e.g. in  
wet conditions).  
5
Attention Assist  
Setting options  
Traffic Sign 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.  
#
Select Standard, Sensitive or Off.  
Suggesting a rest area  
#
Select Suggest Rest Area.  
#
Warning when the maximum permissible  
speed is exceeded  
Activate or deactivate the function.  
If ATTENTION ASSIST detects fatigue or  
increasing lack of attention, it suggests a  
rest area in the vicinity.  
The system can warn you if you unintentionally  
exceed the maximum permissible speed. To do  
this, you can specify in the multimedia system  
by how much the maximum permissible speed  
can be exceeded before a warning is issued. You  
can specify whether the warning is to be just a  
visual warning or an acoustic one as well.  
Traffic Sign Assist detects traffic signs with mul‐  
tifunction camera 1. It assists you by display‐  
ing detected speed limits and overtaking restric‐  
tions in the instrument cluster and optionally in  
the head-up display or central display.  
Since Traffic Sign Assist also uses the data  
stored in the navigation system, it can update  
the display in the following situations without  
detecting traffic signs:  
#
Select the suggested rest area.  
You are guided to the selected rest area.  
R
When the vehicle changes roads, e.g. on a  
highway entry or exit road.  
Driving and parking 241  
Display in the Instrument Display  
R
R
If the windshield in the area of the multifunc‐  
tion camera is dirty, or if the camera is fog‐  
ged up, damaged or covered.  
If the traffic signs are hard to detect, e.g. due  
to dirt or snow, or because they are covered  
or due to insufficient lighting.  
R
R
R
If the information in the navigation system's  
digital map is incorrect or out-of-date.  
If the signs are ambiguous, e.g. traffic signs  
on construction sites or in adjacent lanes.  
If you turn sharply, when passing traffic signs  
outside the camera's field of vision.  
Traffic Sign Assist is not available in all coun‐  
tries. If it is unavailable, display 1 is shown in  
the speedometer.  
Instrument Display in the Widescreen Cockpit  
1
2
3
Permissible speed  
Permissible speed when there is a restriction  
Additional sign with restriction  
Setting Traffic Sign Assist  
Requirements:  
R Only vehicles with Driving Assistance  
Package:  
System limits  
The system may be impaired or may not function  
in the following situations:  
Vehicles with a standard Instrument Dis‐  
play: a + symbol next to a traffic sign in the  
Instrument Display indicates that additional  
traffic signs have been detected. These can  
also be displayed in the media display and  
optionally in the head-up display.  
%
R
If there is poor visibility, e.g. due to insuffi‐  
Active Distance Assist DISTRONIC must be  
activated for the automatic adoption of  
speed limits.  
cient illumination of the road, if there are  
highly variable shade conditions or in rain,  
snow, fog or heavy spray.  
R
If there is glare, e.g. from oncoming traffic,  
direct sunlight or reflections.  
242 Driving and parking  
#
Multimedia system:  
Activate or deactivate the function.  
If a vehicle is detected close to the side of your  
vehicle, the red warning lamp in the outside mir‐  
ror flashes. If you switch on the turn signal indi‐  
cator in the corresponding direction, a warning  
tone sounds once. If the turn signal indicator  
remains switched on, all other detected vehicles  
are indicated only by the flashing of the red  
warning lamp.  
4
5
5
©
Settings  
Assistance  
Adjusting the type of warning  
#
5
Traffic Sign Assist  
Select Visual & Audible, Visual or Off.  
Activating/deactivating automatic adoption  
of speed limits (only vehicles with Driving  
Assistance Package)  
Adjusting the warning threshold  
This value determines the speed at which a  
warning is issued when exceeded.  
#
Select Limit Adoption.  
#
Select Warning Threshold.  
Set the desired speed.  
If you overtake a vehicle quickly, no warning is  
given.  
#
Activate or deactivate the function.  
#
The speed limits detected by Traffic Sign  
Assist are automatically adopted by Active  
Distance Assist DISTRONIC.  
&
WARNING Risk of accident despite Blind  
Spot Assist  
Blind Spot Assist and Active Blind Spot  
Assist with exit warning  
% If one of the following systems is activated,  
the speed detected can be manually adopted  
as the speed limit:  
Blind Spot Assist does not react to vehicles  
approaching and overtaking you at a greatly  
different speed.  
As a result, Blind Spot Assist cannot warn  
drivers in this situation.  
Function of Blind Spot Assist and Active  
Blind Spot Assist with exit warning  
Blind Spot Assist and Active Blind Spot Assist  
use two lateral, rear-facing radar sensors to  
monitor the area up to 130 ft (40 m) behind and  
10 ft (3 m) next to your vehicle.  
R
Active Distance Assist DISTRONIC  
R
Cruise control  
R
Variable limiter  
#
Always pay careful attention to the traf‐  
fic situation and maintain a safe dis‐  
tance at the side of the vehicle.  
Further information (/ page 203).  
If a vehicle is detected at speeds above approx‐  
imately 8 mph (12 km/h) and this vehicle subse‐  
quently enters the monitoring range directly next  
to your vehicle, the warning lamp in the outside  
mirror lights up red.  
Displaying detected traffic signs in the  
media display  
Blind Spot Assist and Active Blind Spot Assist  
are only aids. They may fail to detect some vehi‐  
#
Select Display in Central Display.  
Driving and parking 243  
R
cles and are no substitute for attentive driving.  
warning, a warning tone sounds and the warning  
If vehicles are not driving in the middle of  
their lane  
Always ensure that there is sufficient distance to lamp in the outside mirror starts to flash.  
the side for other road users and obstacles.  
This additional function is only available when  
Warnings may be issued in error when driving  
close to crash barriers or similar solid lane bor‐  
ders. Always make sure that there is sufficient  
distance to the side for other traffic or obsta‐  
cles.  
Warnings may be interrupted when driving along‐  
side long vehicles, for example trucks, for a pro‐  
longed time.  
Blind Spot Assist is not operational when reverse  
gear is engaged.  
Blind Spot Assist is not operational when a  
trailer is coupled to the vehicle and the electrical  
connection has been correctly established.  
Blind Spot Assist is activated and up to a maxi‐  
Exit warning  
mum of three minutes after the ignition has  
The exit warning is an additional function of  
been switched off. The exit warning is no longer  
Blind Spot Assist and can warn vehicle occu‐  
available once the warning lamp in the outside  
pants about approaching vehicles when leaving  
mirror flashes three times.  
the vehicle when stationary.  
The exit warning is only an aid and not a substi‐  
&
WARNING Risk of accident despite exit  
warning  
tute for the attention of vehicle occupants. The  
responsibility for opening and closing the doors  
and for leaving the vehicle remains with the vehi‐  
cle occupants.  
The exit warning reacts neither to stationary  
objects nor to vehicles approaching you at a  
greatly different speed.  
As a result, the exit warning cannot warn  
drivers in these situations.  
System limits  
Blind Spot Assist and Active Blind Spot Assist  
may be limited in the following situations:  
The exit warning may be limited in the following  
situations:  
#
Always pay particular attention to the  
R
If there is dirt on the sensors or the sensors  
are obscured  
traffic situation when opening the doors  
and make sure there is sufficient clear‐  
ance.  
R
When the sensors are covered by adjacent  
vehicles in narrow parking spaces  
When people approach the vehicle  
In the event of stationary or slowly moving  
objects  
R
In poor visibility, e.g. due to fog, heavy rain or  
snow  
R
R
If there are narrow vehicles, e.g. bicycles or  
motorbikes  
If there is a vehicle in the monitoring range, this  
is indicated in the outside mirror. If a vehicle  
occupant opens the door on the side with the  
R
R
If the road has very wide or narrow lanes  
244 Driving and parking  
Function of brake application (Active Blind  
Spot Assist)  
#
Always maintain a safe distance at the  
sides.  
% The brake application function is only availa‐  
ble for vehicles with a Driving Assistance  
Package.  
&
WARNING Risk of accident despite  
Active Blind Spot Assist  
If Active Blind Spot Assist detects a risk of a side  
impact in the monitoring range, a course-cor‐  
recting brake application is carried out. This is  
designed to help you avoid a collision.  
The course-correcting brake application is availa‐  
ble in the speed range between approximately  
20 mph (30 km/h) and 125 mph (200 km/h).  
Active Blind Spot Assist does not react to the  
following:  
R
If vehicles overtake too closely on the  
side, placing them in the blind spot area  
If a course-correcting brake application occurs,  
the red warning lamp flashes in the outside mir‐  
ror and a warning tone sounds. In addition, a dis‐  
play 1 indicating the danger of a side collision  
appears in the multifunction display.  
In rare cases, the system may make an inappro‐  
priate brake application. This brake application  
may be interrupted at any time if you steer  
slightly in the opposite direction or accelerate.  
R
Vehicles approaching and overtaking you  
at a greatly different speed  
As a result, Active Blind Spot Assist may nei‐  
ther give warnings nor intervene in such sit‐  
uations.  
&
WARNING Risk of accident despite  
brake application of Active Blind Spot  
Assist  
#
Always pay careful attention to the traf‐  
A course-correcting brake application cannot  
always prevent a collision.  
fic situation and maintain a safe dis‐  
tance at the side of the vehicle.  
#
Always steer, brake or accelerate your‐  
self, especially if Active Blind Spot  
Assist warns you or makes a course-  
correcting brake application.  
Driving and parking 245  
System limits  
Activating/deactivating Blind Spot Assist or  
Active Blind Spot Assist  
Active Lane Keeping Assist monitors the area in  
front of your vehicle by means of multifunction  
camera 1. It serves to protect you against unin‐  
tentionally leaving your lane. You will be warned  
by vibration pulses in the steering wheel and gui‐  
ded by a course-correcting brake application  
back into your lane.  
Either a course-correcting brake application  
appropriate to the driving situation, or none at  
all, may occur in the following situations:  
Multimedia system:  
4
5
5
©
Settings  
Assistance  
#
R
Vehicles or obstacles, e.g. crash barriers, are  
located on both sides of your vehicle.  
Activate or deactivate Blind Spot Assist.  
or  
R
A vehicle approaches too closely on the side.  
#
Activate or deactivate Act. Blind Spot Assist.  
You are warned by vibration pulses in the steer‐  
ing wheel in the following circumstances:  
R
You have adopted a sporty driving style with  
high cornering speeds.  
% Depending on the vehicle's equipment, Blind  
Spot Assist or Active Blind Spot Assist is  
available.  
R
Active Lane Keeping Assist detects a lane  
marking.  
R
You brake or accelerate significantly.  
A driving safety system intervenes, e.g. ESP®  
or Active Brake Assist.  
A front wheel drives over this lane marking.  
R
R
Active Lane Keeping Assist  
You will also be guided back into your lane by  
means of a course-correcting brake application  
if the following conditions are met:  
ESP® is deactivated.  
R
Function of Active Lane Keeping Assist  
R
A loss of tire pressure or a faulty tire is  
detected.  
R
Active Lane Keeping Assist detects lane  
markings on both edges of the lane.  
R
You are driving with a trailer and the electri‐  
cal connection to the trailer hitch has been  
correctly established.  
R
A front wheel drives over a solid lane mark‐  
ing.  
You can activate or deactivate the Active Lane  
Keeping Assist warning.  
Active Lane Keeping Assist can neither reduce  
the risk of an accident if you fail to adapt your  
246 Driving and parking  
R
driving style nor override the laws of physics. It  
cannot take into account road, weather or traffic  
conditions. Active Lane Keeping Assist is only an  
aid. You are responsible for maintaining a safe  
distance to the vehicle in front, for vehicle  
speed, for braking in good time and for staying  
in lane.  
Vehicles with Driving Assistance Package or  
Driving Assistance Plus Package: Active Lane  
Keeping Assist can bring the vehicle back into  
the lane with a lane-correcting brake application.  
In the case of a broken lane marking being  
detected, a brake application will only be made if  
a vehicle has been detected in the adjacent lane.  
Oncoming vehicles, overtaking vehicles and vehi‐  
cles in adjacent lanes can be detected.  
You have adopted a sporty driving style with  
high cornering speeds or high rates of accel‐  
eration.  
When ESP® is deactivated.  
When driving with a trailer, the electrical con‐  
nection to the trailer has been correctly  
established.  
If a loss of tire pressure or a faulty tire has  
been detected and displayed.  
R
R
R
If a lane-correcting brake application occurs, dis‐  
The system may be impaired or may not function  
in the following situations:  
play 1 appears in the multifunction display.  
R
If there is poor visibility, e.g. due to insuffi‐  
System limits  
No lane-correcting brake application occurs in  
the following situations:  
cient illumination of the road, if there are  
highly variable shade conditions or in rain,  
snow, fog or heavy spray.  
R
You clearly and actively steer, brake or accel‐  
erate.  
Active Lane Keeping Assist is available in the  
speed range between 37 mph (60 km/h) and  
124 mph (200 km/h).  
R
If there is glare, e.g. from oncoming traffic,  
the sun or reflections.  
If the windshield in the area of the multifunc‐  
tion camera is dirty, or if the camera is fog‐  
ged up, damaged or covered.  
If there are no lane markings, or several  
unclear lane markings are present for one  
lane, e.g. around roadworks.  
R
You have switched on the turn signal indica‐  
tor (situation-dependent).  
R
R
A driving safety system intervenes, such as  
ESP®, Active Brake Assist or Active Blind  
Spot Assist.  
R
Driving and parking 247  
#
R
R
If the lane markings are worn, dark or cov‐  
ered.  
If the distance to the vehicle in front is too  
short and thus the lane markings cannot be  
detected.  
If the lane markings change quickly, e.g.  
lanes branch off, cross one another or  
merge.  
Select Standard, Sensitive or Off.  
The handling characteristics may be heavily  
impaired and the trailer can become  
detached. There is a risk of fatal injury.  
Activating/deactivating the haptic warning  
#
Select Warning.  
#
Only install a ball coupling that meets  
Activate or deactivate the function.  
the permitted dimensions and has been  
designed for the trailer operation  
requirements.  
R
R
Trailer hitch  
Notes on towing a trailer  
#
Do not modify the ball coupling or the  
trailer hitch.  
If the roadway is very narrow and winding.  
Mercedes‑AMG vehicles: be sure to observe  
the notes in the Supplement. Otherwise, you  
may fail to recognize dangers.  
Plug-in hybrid: observe the notes in the Supple‐ "Technical data" section under "Trailer hitch" for  
ment. Otherwise, you may fail to recognize dan‐  
gers.  
Activating/deactivating Active Lane Keeping  
Assist  
Multimedia system:  
The values approved by the manufacturer can be  
found on the identification plates and in the  
4
5
5
©
Settings  
Quick Access  
the towing vehicle (/ page 503).  
5
Active Lane Keeping Assist  
&
WARNING Swerving of the vehicle/  
trailer combination due to increased  
speed  
#
Activate or deactivate the function.  
&
WARNING Danger of accident due to  
unsuitable ball coupling  
Setting Active Lane Keeping Assist  
Multimedia system:  
If the vehicle/trailer combination swerves,  
you can lose control of it.  
The vehicle/trailer combination can even tip  
over.  
If you install an unsuitable ball coupling,  
overloading of the trailer hitch and rear axle  
will be the result. This is particularly the case  
if the ball coupling is relatively long or angled  
differently.  
4
5
5
©
Settings  
Assistance  
5
Active Lane Keeping Assist  
Setting the sensitivity  
% The availability of this function is dependent  
on the country.  

Related Topics

Driving and parking

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DYNAMIC SELECT switch
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Trailer hitch
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