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▷When fast approaching standing vehicles.
There is a risk of injury or danger to life. Watch
traffic closely and actively intervene in the re‐
spective situations.◀
Overview
Buttons on the steering wheel
Press but‐
tonFunctionCruise control on/off, interrupt,
refer to page 137Store, maintain speed, refer to
page 138Call up speed, continue cruise
control, refer to page 139Reduce distance, refer to
page 139Increase distance, refer to
page 139Rocker switch:
Set speed, refer to page 138
Radar sensor
A radar sensor is located in the front bumper
for detecting vehicles on the road ahead of the
vehicle.
Always keep radar sensor clean and unob‐
structed.
Camera
The camera is installed near the interior mirror.
Keep the windshield in the area behind the in‐
terior mirror clean and clear.
A dirty or covered area in front of the interior
mirror may hinder the detection of vehicles.
If necessary, clean the area in front of the inte‐
rior mirror, for example, carefully remove salt
residue in the winter.
Functional requirements
Speed range The system is best used on well-constructed
roads.
The minimum speed that can be set is
20 mph/30 km/h. The maximum speed that
can be set depends on the vehicle.
The system can also be activated when sta‐
tionary.
Switching on/off and interrupting
cruise control
Switching on Press button on the steering wheel.
The indicator lights in the instrument cluster
light up and the mark in the speedometer is set
to the current speed.
Cruise control can be used.
DSC will be switched on if needed.
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Switching offTo switch off the system while standing, step
on brake pedal at the same time.
Press button on the steering wheel.▷If active: press twice.▷If interrupted: press once.
The displays go out. The stored desired speed
is deleted.
Interrupting manually Press button on the steering wheel.
If interrupting the system while stationary,
press on the brake pedal at the same time.
Automatic interruption
The system is automatically interrupted in the
following situations:
▷When the driver applies the brakes.▷When selector lever position D is disen‐
gaged.▷When DTC is activated or DSC is deacti‐
vated.▷When DSC is actively controlling stability.▷When SPORT+ is activated with Driving
Dynamics Control.▷If the safety belt and the driver's door are
opened while the vehicle is standing still.▷If the system has not detected objects for
an extended period, for example, on a road
with very little traffic without curb or
shoulder markings.▷If the detection range of the radar is dis‐
rupted, for example, by dirt or heavy fog.▷After a longer stationary period when the
vehicle has been braked to a stop by the
system.Setting the speed
Maintaining/storing the speed
Press the rocker switch while the system is in‐
terrupted.
When the system is switched on, the current
speed is maintained and stored as the desired
speed.
The stored speed is displayed in the speedom‐
eter and briefly in the instrument cluster, refer
to page 139.
DSC will be switched on if needed.
The speed can also be stored bypressing a button.
Press button.
Changing the speed
Press the rocker switch up or down repeatedly
until the desired speed is set.
If active, the displayed speed is stored and the
vehicle reaches the stored speed when the
road is clear.
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▷Each time the rocker switch is pressed to
the point of resistance, the desired speed
increases or decreases by approx.
1 mph/1 km/h.▷Each time the rocker switch is pressed
past the point of resistance, the desired
speed increases or decreases by a maxi‐
mum of 5 mph/10 km/h.
Hold the rocker switch in position to repeat the
action.
Adjusting distance
Information WARNING
The system does not release from the
personal responsibility. Due to the system lim‐
its, braking can be late. There is risk of acci‐
dents or risk of property damage. Be aware to
the traffic situation at all times. Adjust the dis‐
tance to the traffic and weather conditions and
maintain the prescribed safety distance, possi‐
bly by braking.◀
Reduce distance Press button repeatedly until the de‐
sired distance is set.
Instrument cluster will display selected dis‐
tance, refer to page 139.
Increase distance Press button repeatedly until the de‐
sired distance is set.
Instrument cluster will display selected dis‐
tance, refer to page 139.
Continuing cruise control
General information An interrupted cruise control can be continued
by calling up the stored speed.
In the following cases, the stored speed value
is deleted and cannot be called up again:▷When the system is switched off.▷When the ignition is switched off.
Information
Make sure that the difference between current
speed and stored speed is not too large before
calling up the stored speed. Otherwise, unin‐
tentional braking or accelerating may occur.
Calling up stored speed and distance Press button with the system
switched on.
Displays in the instrument cluster
Desired speed and stored speed
▷Marking lights up green:
system is active, the mark‐
ing indicates the desired
speed.▷Marking lights up orange:
system is interrupted, the
marking indicates the stored
speed.▷The marking does not light up: the system
is switched off.
Brief status display
Selected desired speed.
If no speed is indicated, it is possible that the
conditions necessary for operation are not cur‐
rently fulfilled.
Distance to vehicle ahead of you Shown is selected distance to the vehicle driv‐
ing ahead of you.
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Distance displayDistance 1Distance 2Distance 3Distance 4
This value is set automatically after
the system is switched on.The system has been interrupted or
distance control is temporarily sup‐
pressed because the accelerator
pedal is being pressed; a vehicle
was not detected.Distance control is temporarily sup‐
pressed because the accelerator
pedal is being pressed; a vehicle
was detected.
Detected vehicle
Symbol lights up orange:
A vehicle has been detected ahead of
you.
Rolling bars: the detected vehicle has driven
away.
ACC does not accelerate. To accelerate, acti‐
vate ACC, e.g., by briefly stepping on the ac‐
celerator pedal, pressing the RES button or
rocker switch.
Indicator/warning lights Symbol flashes orange:
The conditions are not adequate for
the system to work.
The system was deactivated but applies the
brakes until you actively resume control by
pressing on the brake pedal or accelerator
pedal.
Symbol flashes red and a signal
sounds:
You are requested to intervene by
braking or make an evasive maneuver.
Displays in the Head-up Display Some system information can also be dis‐
played in the Head-up Display.
Distance information The symbol is displayed when the dis‐tance from the vehicle traveling ahead
is too short.
The distance information is active under the
following circumstances:▷Active Cruise Control switched off.▷Display in the Head-up Display selected,
refer to page 98.▷Distance too short.▷Speed greater than approx.
40 mph/70 km/h.
System limits
Detection range
The detection capacity of the system and the
automatic braking capacity are limited.
Two-wheeled vehicles for instance might not
be detected.
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Deceleration
The system does not decelerate in the follow‐
ing situations:▷For pedestrians or similarly slow-moving
road users.▷For red traffic lights.▷For cross traffic.▷For oncoming traffic.
Swerving vehicles
A vehicle driving in front of you is not detected
until it is completely within the same lane as
your vehicle.
If a vehicle driving ahead of you suddenly
swerves into your lane, the system may not be
able to automatically restore the selected dis‐
tance. This also applies to major speed differ‐
ences to vehicles driving ahead of you, for ex‐
ample, when rapidly approaching a truck.
When a vehicle driving ahead of you is reliably
detected, the system requests that the driver
intervene by braking and carrying out evasive
maneuvers, if needed.
Cornering
If the desired speed is too high for a curve, the
speed is reduced slightly, although curves can‐
not be anticipated in advance. Therefore, drive
into a curve at an appropriate speed.
In tight curves the system offers only restricted
detection where a vehicle ahead of you might
be detected late or not at all.
When you approach a curve the system may
briefly report vehicles in the next lane due to
the bend of the curve. If the system deceler‐
ates you may compensate it by briefly acceler‐
ating.
After releasing the gas pedal the system is re‐
activated and controls speed independently.
Driving away In some situations, the vehicle cannot drive off
automatically; for example:
▷On steep inclines.▷From behind bumps in the road.
In these cases, step on the accelerator pedal.
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Weather
In the event of unfavorable weather and light conditions, e. g. if there is rain, snowfall, slush,
fog or glare, this may result in poorer recogni‐
tion of vehicles as well as short-term interrup‐
tions for vehicles that are already detected. Drive attentively, and react to the current trafficsituation. If necessary, intervene actively, for
example by braking, steering or evading.
Engine power The desired speed is also maintained downhill,but may not be maintained on uphill grades if
engine power is insufficient.
Malfunction
The system cannot be activated if the radar
sensor is not aligned correctly. This may be
caused by damage incurred during parking, for
example.
A Check Control message is displayed if the
system fails.
The function for detecting and responding
when approaching stationary vehicles may be
limited in the following situations:▷During calibration of the camera immedi‐
ately after vehicle delivery.▷If the camera is malfunctioning or dirty. A
Check Control message is displayed.
Cruise control
The concept Using this system, a desired speed can be ad‐
justed using the buttons on the steering wheel.
The system maintains the desired speed. The
system accelerates and brakes automatically
as needed.
General information
Depending on the driving settings, the features
of the cruise control can change in certain
areas.
Information
WARNING
The system does not release from the
personal responsibility to correctly assess the
traffic situation. Based on the limits of the sys‐
tem, it cannot independently react to all traffic
situations. There is risk of an accident. Adjust
the driving style to the traffic conditions. Watch
traffic closely and actively intervene in the re‐
spective situations.◀
WARNING
The use of the system can lead to an in‐
creased risk of accidents in the following situa‐
tions:▷On winding roads.▷In heavy traffic.▷On slippery roads, in fog, snow or rain, or
on a loose road surface.
There is risk of accidents or risk of property
damage. Only use the system if driving at con‐
stant speed is possible.◀
WARNING
The desired speed can be incorrectly ad‐
justed or called up by mistake. There is risk of
an accident. Adjust the desired speed to the
traffic conditions. Watch traffic closely and ac‐
tively intervene in the respective situations.◀
Overview
Buttons on the steering wheel
Press but‐
tonFunctionCruise control on/off, interrupt‐
ing, refer to page 143.Store speed, refer to
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Press but‐
tonFunctionCall up speed, continue cruise
control, refer to page 144.Rocker switch: adjust speed,
refer to page 143.
Switching on/off and interrupting
cruise control
Switching on Press button on the steering wheel.
The marking in the speedometer is set to the
current speed.
Cruise control can be used.
DSC will be switched on if needed.
Switching off Press button on the steering wheel.
▷If active: press twice.▷If interrupted: press once.
The displays go out. The stored desired speed
is deleted.
Interrupting manually When active, press the button on the
steering wheel.
Automatic interruption The system is automatically interrupted in the
following situations:
▷When the driver applies the brakes.▷If the clutch pedal is depressed for a few
seconds or released while a gear is not en‐
gaged.▷If the gear engaged is too high for the cur‐
rent speed.▷When selector lever position D is disen‐
gaged.▷When DTC is activated or DSC is deacti‐
vated.▷When DSC is actively controlling stability.▷If HDC is activated.▷When SPORT+ is activated with Driving
Dynamics Control.
Setting the speed
Maintaining/storing the speed
Press the rocker switch while the system is in‐
terrupted.
When the system is switched on, the current
speed is maintained and stored as the desired
speed.
The stored speed is displayed in the speedom‐
eter and briefly in the instrument cluster, refer
to page 144.
DSC will be switched on if needed.
The speed can also be stored by pressing a
button.
Press button.
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Changing the speed
Press the rocker switch up or down repeatedly
until the desired speed is set.
If active, the displayed speed is stored and the
vehicle reaches the stored speed when the
road is clear.
▷Each time the rocker switch is pressed to
the point of resistance, the desired speed
increases or decreases by approx.
1 mph/1 km/h.▷Each time the rocker switch is pressed
past the point of resistance, the desired
speed increases or decreases by a maxi‐
mum of 5 mph/10 km/h.
The maximum speed that can be set de‐
pends on the vehicle.▷Pressing the rocker switch to the resist‐
ance point and holding it accelerates or de‐
celerates the vehicle without requiring
pressure on the accelerator pedal.
After the rocker switch is released, the ve‐
hicle maintains its final speed. Pressing the
switch beyond the resistance point causes
the vehicle to accelerate more rapidly.
Continuing cruise control
General information
An interrupted cruise control can be continued
by calling up the stored speed.
In the following cases, the stored speed value
is deleted and cannot be called up again:
▷When the system is switched off.▷When the ignition is switched off.
Information
Make sure that the difference between current
speed and stored speed is not too large before
calling up the stored speed. Otherwise, unin‐
tentional braking or accelerating may occur.
Calling up stored speed Press button on the steering wheel.
The stored speed is reached and maintained. Displays in the instrument cluster
Indicator lamp Depending on how the vehicle is equip‐
ped, the indicator lamp in the instru‐
ment cluster indicates whether the sys‐
tem is switched on.
Desired speed and stored speed
▷Marking lights up green:
system is active, the mark‐
ing indicates the desired
speed.▷Marking lights up orange:
system is interrupted, the
marking indicates the stored
speed.▷The marking does not light up: the system
is switched off.
Brief status display
Selected desired speed.
If no speed is indicated, it is possible that the
conditions necessary for operation are not cur‐
rently fulfilled.
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