MERCEDES-BENZ CLA 2023 Owners Manual

Accelerate the vehicle to the desired speed
and press rocker switch 1 up M .
Adopting a detected speed
Activate cruise control.If a traPc sign has been detected and is dis-
played in the instrument cluster: select /
with the les rocker switch.
The maximum permissible speed shown by the
traPc sign is stored and the vehicle maintains
or does not exceed this speed.
Deactivating cruise control
Select O with the les rocker switch.
Deactivating cruise control
Select N with the right rocker switch.\bIf you brake, deactivate ESP n
or if ESP n
inter-
venes, cruise control is deactivated.
Active Distance Assist DISTRONIC

q Function of Active Distance Assist DISTRONIC
DISTRONIC Active Distance Assist maintains the
set speed when driving freely. If vehicles are
detected ahead, the set distance is maintained, if necessary until the vehicle comes to a standstill.
The vehicle accelerates or brakes depending on
the distance to the vehicle in front and the set speed. The speed and distance to the vehicle in
front are set and saved using the steering wheel.
Available speed range: = Vehicles without Driving Assistance Package:
15 mph (20 km/h) - 120 mph (200 km/h)
= Vehicles with Driving Assistance Package:
15 mph (20 km/h) - 130 mph (210 km/h)
Other features of Active Distance Assist
DISTRONIC:
= Adjusts the driving style depending on the
selected drive program (fuel-saving, comforta-
ble or dynamic)
= Initiates acceleration to the stored speed if the
turn signal indicator is switched on to change
to the overtaking lane
= Vehicles with Driving Assistance Package:
- Reacts to stationary vehicles detected in
urban speed ranges (except bicycles and
motorcycles)- Takes one-sided overtaking restrictions
into account on highways or on multi-lane
roads with separate roadways (country-
dependent)
Vehicles with Driving Assistance Package and
Parking Package: if the vehicle has been braked to
a standstill on multi-lane, separate roadways by Active Distance Assist DISTRONIC, it can auto-matically follow the vehicle in front when drivingoM again within 30 seconds. If a critical situation
is detected when driving oM, a visual and acoustic
warning is given indicating that the driver must
now take control of the vehicle. The vehicle is not
accelerated any further.
Observe the notes on driving systems and your responsibility; you may otherwise fail to recognize
dangers (  page 158).Driving and parking169

Active Distance Assist DISTRONIC displays in theinstrument display
Assistant display
1Route-based speed adaptation: type of routeevent (  page 174)2Vehicle in front3Distance indicator4Set speciNed distance5Active Lane Change Assist lane change dis-
playPermanent status display of Active Distance
Assist DISTRONIC = M (white): Active Distance Assist
DISTRONIC selected, speciNed distance set
= M (white vehicle, green speedometer):
Active Distance Assist DISTRONIC active, speciNed distance set and no vehicle detected
= M (green): Active Distance Assist
DISTRONIC active, speciNed distance set and
vehicle detected
= r : Route-based speed adaptation active
(  page 174).
The stored speed is shown along with the perma- nent status display and highlighted on the speed-ometer. When Active Distance Assist DISTRONIC is passive, the speed is grayed out.\bOn highways or high-speed major roads, thegreen

=If there are narrow vehicles in front, such as
bicycles or motorcycles.
In addition, on slippery roads, braking or acceler- ating 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.&WARNING Risk of accident from accelera-
tion or braking by Active Distance Assist
DISTRONIC
Active Distance Assist DISTRONIC may accel-
erate or brake in the following cases, for
example:
= If the vehicle pulls away using Active Dis-
tance Assist DISTRONIC.
= If the stored speed is called up and is con-
siderably faster or slower than the cur-
rently driven speed.
= If Active Distance Assist DISTRONIC no
longer detects a vehicle in front or does
not react to relevant objects.
Always carefully observe the traPc con-
ditions and be ready to brake at all
times.Take into account the traPc situation
before calling up the stored speed.&WARNING Risk of accident due to insuP-
cient deceleration by Active Distance
Assist DISTRONIC
Active Distance Assist DISTRONIC brakes your vehicle with up to 50% of the possible deceler-
ation. If this deceleration is not suPcient,
Active Distance Assist DISTRONIC alerts you with a visual and acoustic warning.
Adjust your speed and maintain a suita-
ble distance from the vehicle in front.Brake the vehicle yourself and/or take
evasive action.&WARNING Risk of accident if detection
function of Active Distance Assist DISTRONIC is impaired
Active Distance Assist DISTRONIC does not
react or has a limited reaction:
= when driving on a diMerent lane or when
changing lanes
= to pedestrians, animals, bicycles or sta-
tionary vehicles, or unexpected obstacles
= to complex traPc conditions
= to oncoming vehicles and crossing traPc
As a result, Active Distance Assist DISTRONIC may neither give warnings nor intervene in
such situations.
Always observe the traPc conditions
carefully and react accordingly.

q Operating Active Distance Assist DISTRONIC
Requirements
= The electric parking brake is released.
= ESP n
is activated and is not intervening.
Driving and parking171

=The transmission is in position [.
= The driver\bs door is closed.
= Check of the radar sensor system has been
successfully completed.
= Parking Assist PARKTRONIC is not being used
to park the vehicle or to exit from a parking
space.To operate Active Distance Assist DISTRONIC: press the rocker switches on the
steering wheel control unit up or down to the desired position.
Activating/deactivating Active Distance Assist
DISTRONIC
Press button H.
Activating Active Distance Assist DISTRONIC
To activate without a stored speed: press
rocker switch 1 up M or down N, or
select / with the les rocker switch.
or
To activate with a stored speed: select /
with the les rocker switch.Remove your foot from the accelerator pedal.
The current speed is stored and maintained by
the vehicle.
Adopting a detected speed limit
Activate Active Distance Assist DISTRONIC.If a traPc sign has been detected and is dis-
played in the instrument display: select /
with the les rocker switch.
The maximum permissible speed on the traPc
sign is adopted as the stored speed. The vehi- cle adapts its speed to that of the vehicle in
front, but only up to the stored speed.
Pulling away with Active Distance Assist
DISTRONIC
Activate Active Distance Assist DISTRONIC and remove your foot from the brake pedal.Select / with the les rocker switch.
or
Depress the accelerator pedal brieOy and
Nrmly.
The functions of Active Distance Assist
DISTRONIC continue to be carried out.
Deactivating Active Distance Assist DISTRONIC
172Driving and parking

&WARNING Risk of an accident due to
Active Distance Assist DISTRONIC being
active when you leave the driver\bs seat
If you leave the driver\bs seat while the vehicle
is being braked by Active Distance Assist
DISTRONIC only, the vehicle can roll away.
Always deactivate Active Distance Assist
DISTRONIC and secure the vehicle to
prevent it from rolling away before you
leave the driver\bs seat.Select O with the les rocker switch.\bIf you brake, deactivate ESP n
or if ESP n
inter-
venes, Active Distance Assist DISTRONIC is
deactivated.
Increasing or decreasing the speed
1 mph (1 km/h): press rocker switch 1 up
M or down N to the pressure point.
or
5 mph (10 km/h): press rocker switch 1 up
M or down N beyond the pressure
point.orAccelerate the vehicle to the desired speed
and press rocker switch 1 up M .
Changing the speciNed distance to the vehicle in
front
To reduce the speciNed distance: press the
right rocker switch up ( Ñ).To increase the speciNed distance: press the
right rocker switch down ( Ò).

qFunction of Active Speed Limit Assist
If a change in the speed limit of 12 mph
(20 km/h) or more is detected and automatic
adoption of speed limits is activated, the new speed limit is automatically adopted as the storedspeed (  page 186).
The driven speed is adjusted when the vehicle is level with the traPc sign at the latest. In the case
of signs indicating entry into an urban area, the speed is adapted according to the speed permit-
ted within the urban area. The speed limit display on the instrument display is always updated whenthe vehicle is level with the traPc 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 recommen-
ded speed. If you do not alter the stored speed on an unlimited stretch of road, the recommended
speed is 80 mph (130 km/h).
If Active Distance Assist DISTRONIC has been put
into passive mode by pressing the accelerator pedal, only speed limits which are higher than theset speed are adopted.
Observe the notes on driving systems and your responsibility; you may otherwise fail to recognizedangers (  page 158).
System limits
The system limits of TraPc Sign Assist apply to
the detection of traPc signs (  page 184).
Speed limits below 12 mph (20 km/h) are not automatically adopted by the system as the stored speed. Temporary speed restrictions (e.g. applica-
ble for a certain time or due to weather condi-
tions) cannot be properly detected by the system. The maximum permissible speed applying to aDriving and parking173

vehicle with a trailer is not detected by the sys-tem.
Adjust the speed in these situations.&WARNING Risk of accident due to Active
Speed Limit Assist adapting the vehicle\bs
speed
The speed adopted by Active Speed Limit
Assist may be too high or incorrect in some
individual cases, such as:
= at speed limits below 12 mph (20 km/h)
= in wet conditions or in fog
= when towing a trailer
Ensure that the driven speed complies
with traPc regulations.Adjust the driving speed to suit current
traPc and weather conditions.

qFunction of route-based speed adaptation
When Active Distance Assist DISTRONIC is activa-
ted, the vehicle speed will be adapted accordingly
to the route events ahead. Depending on the drive program selected, the vehicle negotiates a route
event ahead in an economical, comfortable 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 restric-
tions ahead are taken into account.
You can activate and deactivate route-based
speed adaptation in the multimedia system (  page 175).
The following route events are taken into account: = Bends
= T-intersections, traPc circles and toll stations
= Turns and exits
= TraPc jams ahead (only with Live TraPc Infor-
mation )\bWhen the toll station is reached, Active Dis- tance Assist DISTRONIC adopts the speed asthe 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:
= Turning at intersections
=Driving on slowing-down lanes
= Driving on lanes adjacent to slowing-down
lanes
The driver is responsible for choosing the right speed and observing other road users. This
applies in particular to intersections, traPc circles
and traPc lights because route-based speed
adaptation does not brake the vehicle to a stand-
still.
When route guidance is active, the Nrst speed
adjustment is carried out automatically. If the turn signal indicator is switched on, the selected route
is conNrmed and further speed adjustment is acti-
vated.
Speed adaptation is canceled in the following
cases:
= If the turn signal indicator is switched oM
before the route event.
= If the driver depresses the accelerator or
brake pedal during the process.
System limits
Route-based speed adaptation does not take right
of way regulations into account. The driver is174Driving and parking

responsible for complying with road traPc regula-
tions and driving at a suitable speed.
The speed adaptation made by the system may
not always be suitable, particularly in the following situations:
= the road\bs course not clearly visible
= Road narrowing
= varying maximum permissible speeds in indi-
vidual lanes, forexample at toll stations
= wet road surfaces, snow or ice
In these situations the driver must intervene
accordingly.&WARNING Risk of accident in spite of
route-based speed adaptation
Route-based speed adaptation can malfunc-
tion or be temporarily unavailable in the fol-
lowing situations:
= If the driver does not follow the calculated
route
= If map data is not up-to-date or available
=
In the event of roadworks
= In bad weather or road conditions
= If the accelerator pedal is depressed
= In the event of electronically displayed
speed limitationsAdapt the speed to the traPc situation.

qSetting route-based speed adaptation
Requirements
= Active Distance Assist DISTRONIC is activa-
ted.
= ECO Assist is active.
Multimedia system: 4 © 5
Settings 5
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.\bFurther information on route-based speed
adaptation (  page 174).Active Steering Assist

qFunction of Active Steering Assist
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 ofmoderate steering interventions. Depending on
the speed driven, Active Steering Assist uses the vehicles ahead and lane markings as a reference.
\bDepending on the country, in the lower speedrange Active Steering Assist can use the sur-
rounding traPc as a reference. If necessary,
Active Steering Assist can then also provide assistance when driving outside the center of
the lane, forexample, to form a rescue lane.
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.
Status display of the active steering assistant = Ø (gray): activated and passive
= Ø (green): activated and active
= Ø (red): system limits detected
Driving and parking175

=Ø (white, red hands): "hands on the steer-
ing wheel" prompt\bDuring the transition from active to passive
status, the Ø symbol is shown as enlarged
and Oashing. When the passive state is
reached, the symbol Ø is displayed in
gray.\bDepending on the selected vehicle settings,
Active Steering Assist may be unavailable.
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 vehi-
cle and keep it in lane. The driver must expect a change from active to passive mode or vice versa at any time.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 steeringwheel, display 1 appears. If the driver still does
not steer the vehicle, a warning tone sounds in
addition to the visual warning message.
If the driver does not react to the warning for a
considerable period, the system can initiate an
emergency stop (  page 177).
The warning is not issued or is stopped when the driver gives conNrmation to the system:
= The driver steers the vehicle.
=Depending on the country: the driver presses
a steering wheel button or operates Touch Control
If Active Steering Assist detects that a system limit has been reached, a visual warning is issuedand a warning tone sounds.
Observe the notes on driving systems and your
responsibility; you may otherwise fail to recognize dangers (  page 158).
System limits
Active Steering Assist has a limited steering tor-
que for lateral guidance. In some cases, the steer-
ing intervention is not suPcient to keep the vehi-
cle in the lane or to drive through exits.
The system may be impaired or may not function
in the following instances:
= There is poor visibility, e.g. due to snow, rain,
fog, heavy spray, greatly varying ambient light
or strong shadows on the road.
= There is glare, e.g. from oncoming traPc,
direct sunlight or reOections.
= *nsuPcient road illumination.176Driving and parking

=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 pres-
ent for one lane, or the markings change
quickly, forexample, in a construction area or
intersections.
= The lane markings are worn away, dark or cov-
ered up, e.g. by dirt or snow.
= If the distance to the vehicle in front is too
short and thus the lane markings cannot be
detected.
= The road is narrow and winding.
= There are obstacles on the lane or projecting
out into the lane, suchas object markers.
The system does not provide assistance in the fol-
lowing conditions:
= On tight bends and when turning.
= When crossing intersections.
= At traPc circles or toll stations.
= When the tire pressure is too low.&WARNING Risk of accident if Active Steer-
ing Assist unexpectedly stops functioning
If the system limits of Active Steering Assist
are reached there is no guarantee that the system will remain active or will keep the vehi-
cle in lane.
Always keep your hands on the steering
wheel and observe the traPc carefully.Always steer the vehicle paying attention
to traPc conditions.&WARNING Risk of accident if Active Steer-
ing Assist unexpectedly intervenes
The detection of lane markings and objects
may malfunction and cause unexpected steer-
ing interventions.
Steer according to traPc conditions.

qActivating/deactivating Active Steering Assist
Requirements
= ESP n
is activated, but is not intervening.
= Active Distance Assist DISTRONIC is activa-
ted.
Multimedia system: 4 © 5
Settings 5
Quick AccessSelect O Steering Assist .
Function of Active Emergency Stop 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 steeringwheel, display 1 appears. If the driver still does
not steer the vehicle, or gives no conNrmation to
Driving and parking177

the system, a warning tone sounds in addition to
the visual warning message.
If the driver still does not respond to the warning,
the Beginning Emergency Stop message appears
in the Instrument Display. If the driver still does
not respond, Active Distance Assist DISTRONIC reduces the speed. The vehicle 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.
When the vehicle is stationary, the following
actions are carried out:
= The vehicle is secured with the electric park-
ing brake.
= Active Distance Assist DISTRONIC is ended.
= The vehicle is unlocked.
= If possible, an emergency call is placed to the
Mercedes-Benz emergency call center.
The driver can cancel the deceleration at any time
by performing one of the following actions:
= Steering= Braking or accelerating
= Deactivating Active Distance Assist
DISTRONIC
Active Lane Change Assist

q Function of Active Lane Change Assist
Active Lane Change Assist supports the driver when changing lanes by applying steering torque
if the driver activates a turn signal indicator.
Observe the notes on driving systems and yourresponsibility; you may otherwise fail to recognizedangers (  page 158).
Assistance when changing lanes is provided if all
the following conditions are met:
= You are driving on a freeway or road with mul-
tiple lanes in the direction of travel.
= The neighboring lane is separated by a broken
lane marking.
= No vehicle is detected in the adjacent lane.
= The vehicle speed is between 50 mph
(80 km/h) and 110 mph (180 km/h).
= Active Lane Change Assist is switched on in
the multimedia system.
= Active Steering Assist is activated and active.
If no vehicle is detected in the adjacent lane and a
lane change is permitted, the lane change begins
aser the driver has activated the turn signal indi-
cator. This is shown to the driver with a green arrow next to the