2023 MERCEDES-BENZ CLA Owners Manual

limitations regarding the safe use of these sys-tems.
Driving systems can neither reduce the risk of an accident if you fail to adapt your driving style nor
override the laws of physics. They cannot always take into account road, weather or traPc condi-
tions.\bSome driving systems can regulate or limit the speed to a previously set value. Draw atten-tion to the stored speed when changing driv-
ers.
Information on vehicle sensors and cameras
Some driving and driving safety systems use cam- eras as well as radar or ultrasonic sensors to
monitor the area in front of, behind or next to the vehicle.
1Multifunction camera2Cameras in the outside mirrors3Front radar4Front camera5Corner radars6Ultrasonic sensors7Rear-view camera&WARNING Risk of accident due to restric-
ted detection performance of vehicle sen- sors and cameras
If the area around vehicle sensors or cameras
is covered, damaged or dirty, certain driving
and safety systems cannot function correctly.
There is a risk of an accident.
Keep the area around vehicle sensors or
cameras clear of any obstructions and
clean.Have damage to the bumper, radiator
grille or stone chipping in the area of the
front and rear windows repaired at a
qualiNed specialist workshop.
Keep the areas around the sensors and cameras
in particular free of dirt, ice and slush (  page 275). The sensors and cameras must
not be covered and the detection areas around them must be kept clear. Do not attach additional
license plate bracket, advertisements, stickers, wraps or stone chip protection Nlms in the detec-
tion range of the sensors and cameras. Make sure
Driving and parking159

that there are no overhanging loads protruding
into the detection area.
If there is damage to a bumper or the radiator grille, or aser an impact, have the function of the
sensors checked at a qualiNed specialist work-
shop. Have damage or stone chipping around the cameras on the front and rear passenger com-
partment windows repaired at a qualiNed special-
ist workshop.
Overview of driving systems and driving safety
systems
= ABS ( Anti-lock Braking System) (  page 160)
= BAS ( Brake Assist System) (  page 161)
= ESP n
(Electronic Stability Program)
(  page 161)
= ESP n
Crosswind Assist (  page 162)
= EBD ( Electronic Brakeforce Distribution)
(  page 163)
= STEER CONTROL (  page 163)
= HOLD function (  page 163)
= Hill Start Assist (  page 164)
=
Start-oM assist ( page 165)
= ATTENTION ASSIST (  page 165)
= Cruise control (  page 167)
= TraPc Sign Assist (  page 184)
= Suspension with adaptive damping adjustment
(  page 193)
Driving Assistance Package
The following functions are part of the Driving
Assistance Package. Certain functions are only
available in some countries. Some functions are
also available without the Driving Assistance
Package, albeit with restricted functionality.
= Active Distance Assist DISTRONIC
(  page 169)
= Active Speed Limit Assist (country-dependent)
(  page 173)
= Route-based speed adaptation (country-
dependent) (  page 174)
= Active Brake Assist (  page 179)
= Active Steering Assist (country-dependent)
(  page 175)=
Active Emergency Stop Assist (country-
dependent) (  page 177)
= Active Lane Change Assist (country-depend-
ent) (  page 178)
= Blind Spot Assist and Active Blind Spot Assist
with exit warning (  page 188)
= Active Lane Keeping Assist (  page 191)
Parking Package
= Rear view camera (  page 193)
= 360° Camera (  page 195)
= Parking Assist PARKTRONIC (  page 198)
= Active Parking Assist (  page 203)
Functions of ABS
The Anti-lock Brake System (ABS) regulates the
brake pressure in critical driving situations:
= During braking, for instance, at maximum full-
stop braking or if there is insuPcient tire trac-
tion, the wheels are prevented from locking.
= Vehicle steerability while braking is ensured.
160Driving and parking

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 con-
ditions and can serve as a reminder to take extra
care while driving.
System limits = ABS is active from speeds of approx. 3 mph
(5 km/h).
= ABS may be impaired or may not function if a
malfunction has occurred and the yellow %
ABS warning lamp lights up continuously aser
the vehicle is started.
Function of BAS
&WARNING Risk of an accident caused by a
malfunction in BAS (Brake Assist System)
If BAS is malfunctioning, the braking distance
in an emergency braking situation is increased.
Depress the brake pedal with full force in
emergency braking situations. ABS pre-
vents the wheels from locking.The Brake Assist System (BAS) supports your emergency braking situation with additional brakeforce.
If you depress the brake pedal quickly, BAS is
activated:
= BAS automatically boosts the brake pressure.
= BAS can shorten the braking distance.
= ABS prevents the wheels from locking.
The brakes will function as usual once you release the brake pedal. BAS is deactivated.
Functions of ESP n
&WARNING
Risk of skidding if ESP n
is
deactivated
If you deactivate ESP n
, ESP n
cannot carry out
vehicle stabilization.
ESP n
should only be deactivated in the
following situations.*NOTE Mercedes-AMG vehiclesObserve the notes in the Supplement.
You could otherwise fail to recognize
dangers.
The Electronic Stability Program (ESP n
) can moni-
tor and improve driving stability and traction in
the following situations within physical limits:
= When pulling away on wet or slippery roads.
= When braking.
If the vehicle deviates from the direction desired
by the driver, ESP n
can stabilize the vehicle by
intervening in the following ways:
= The brakes are applied to one or more wheels.
= The engine output is adapted according to the
situation.
ESP n
is deactivated if the

Observe the following points when ESPn
is deacti-
vated:
= Driving stability will no longer be improved.
= The drive wheels could spin.
= ETS/4ETS traction control will still be active.\bWhen ESP n
is deactivated, you will still be
assisted by ESP n
when braking.
If the

Activating/deactivating ESPn
(Electronic Stability
Program)
Multimedia system:
4 © 5
Settings 5
Quick Access
\bESP n
can only be activated/deactivated using
quick access when at least one other function
is available in quick access. ESP n
can other-
wise be found in the Assistance menu.*NOTE Mercedes-AMG vehiclesObserve the notes in the Supplement.
You could otherwise fail to recognize
dangers.Select ESP.Select On or

qActivating/deactivating the HOLD function&WARNING Risk of an accident due to the
HOLD function being active when you
leave the vehicle
If the vehicle is only braked with the HOLD
function it could, in the following situations,
roll away:
= If there is a malfunction in the system or in
the power supply.
= If the HOLD function is deactivated by
depressing the accelerator pedal or brake
pedal, e.g. by a vehicle occupant.
Always secure the vehicle against rolling away before you leave it.
Requirements
= The vehicle is stationary.
= The driver\bs door is closed or the seat belt on
the driver\bs side is fastened.
= The vehicle has been started or has been
automatically switched oM by the ECO start/
stop function.
= The electric parking brake is released.
= Active Distance Assist DISTRONIC is deactiva-
ted.
= The transmission is in position [, ^ or \\.
Activating the HOLD functionDepress the brake pedal, and aser a short
time quickly depress further until the

&WARNING Risk of accident and injury due
to the vehicle rolling away
Aser a short time, Hill Start Assist no longer
holds the vehicle.
Swisly move your foot from the brake
pedal to the accelerator pedal. Do not
leave the vehicle when it is being held by
Hill Start Assist.
Start-oM assist

qFunction of the start-oM assist
The start-oM assist enables optimal vehicle accel-
eration from a standstill. For this, a suitably high-
grip road surface is required and the tires and
vehicle must also be in good condition.
Do not activate the start-oM assist on public
roads.
Be sure to observe the safety notes and informa-
tion on ESP n
( page 161).

qActivating the start-oM assist&WARNING Risk of skidding and having an
accident from wheels spinning
When you use start-oM assist, individual
wheels could spin and you could lose control
of the vehicle.
If ESP n
is deactivated, there is a risk of skid-
ding and accident!
Make sure that no persons or obstacles are in the close vicinity of your vehicle.Deactivating ESP n
( page 163).Move the steering wheel to the straight-ahead
position.Depress the brake pedal Nrmly with your les
foot and keep it depressed.Engage the [ drive position (  page 146).Select the sportiest available drive program
B or C ( page 142).Rapidly depress the accelerator pedal fully.Take your foot oM the brake, but keep the
accelerator pedal depressed.
The vehicle pulls away at maximum accelera-
tion.Switch on ESP n
once the acceleration proce-
dure is complete. ESP n
will otherwise not be
able to stabilize the vehicle if the vehicle starts
to skid or a wheel starts to spin.
Canceling the start-oM assist
Remove your foot from the accelerator pedal.Reactivate the ESP n
.
ATTENTION ASSIST

q 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 fatigue
or increasing lapses in concentration on the part
of the driver, it suggests taking a break.
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-res-
Driving and parking165

ted and attentive driver. On long journeys, take
regular breaks in good time that allow for ade-
quate recuperation.
You can choose between two settings:
= Standard: normal system sensitivity.
= Sensitive: higher system sensitivity. The driver
is warned earlier and the attention level detec-
ted by ATTENTION ASSIST is adapted accord-
ingly.
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 take
a break where necessary. If you do not take a
break and ATTENTION ASSIST continues to detect increasing lapses in concentration, you will bewarned again aser a minimum of 15 minutes.
You can have the following status information for
ATTENTION ASSIST displayed in the assistance
menu of the on-board computer:
= The length of the journey since the last break.
= The attention level determined by ATTENTION
ASSIST:
- the fuller the circle, the higher the atten-
tion level determined
- as your attention wanes, the circle in the
center of the display becomes smaller
If ATTENTION ASSIST is unable to calculate the attention level and cannot issue a warning, the
System Suspended message appears.
If a warning is given in the Instrument Display, the
multimedia system oMers 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.
If ATTENTION ASSIST is deactivated, the Û
symbol appears in the assistance graphic in the Instrument Display. Aser the vehicle is started,
ATTENTION ASSIST is automatically activated. The last selected sensitivity level remains stored.
System limits
ATTENTION ASSIST is active in the 37 mph
(60 km/h) to 124 mph (200 km/h) speed range.
Particularly in the following situations, ATTENTION ASSIST only functions in a restricted manner and
warnings may be delayed or not occur:
= If you have been driving for less than approx-
imately 30 minutes.
= If the road condition is poor (uneven road sur-
face or potholes).
= If there is a strong side wind.
= If you adopt a sporty driving style (high corner-
ing speeds or high rates of acceleration).166Driving and parking