Driving comfortVehicle features and options
This chapter describes all standard, country-
specific and optional features offered with the
series. It also describes features that are not
necessarily available in your car, e. g., due to
the selected options or country versions. This
also applies to safety-related functions and
systems. The respectively applicable country
provisions must be observed when using the
respective features and systems.
Camera-based cruise control
with Stop & Go function, ACC
The concept Use this system to select a desired speed that
the vehicle will maintain automatically on clear
roads.
To the extent possible, the system automati‐
cally adjusts the speed to a slower vehicle
ahead of you.
A camera on the interior rear view mirror is
used to detect vehicles driving ahead.
The distance that the vehicle maintains to the
vehicle ahead of you can be varied.
For safety reasons, it depends on the speed.
To maintain a certain distance, the system au‐ tomatically decelerates, applies the brakes
lightly, or accelerates again if the vehicle ahead
begins moving faster.
If the vehicle ahead of you brakes to a halt, and
then proceeds to drive again within a brief pe‐
riod, the system is able to detect this within the
given system limits. Your own vehicle will
brake automatically and then accelerate again.
If the vehicle ahead of you drives away again
after a prolonged period, briefly press the ac‐
celerator pedal or press the appropriate buttonto reactivate the system. The vehicle acceler‐
ates again.
As soon as the road is clear, the vehicle accel‐
erates to the desired speed.
The speed is also maintained downhill, but
may not be maintained uphill if engine power is
insufficient.
General information
Depending on the driving settings, the features
of the cruise control can change in certain
areas.
Information WARNING
The system does not relieve 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 interfere in the re‐
spective situations.◀
WARNING
An unsecured vehicle can put itself into
motion and roll away. There is risk of an acci‐
dent. Before exiting, secure the vehicle against
rolling.
In order to ensure that the vehicle is secured
against rolling away, observe the following:▷Set the parking brake.▷On uphill grades or on a slope, turn the
front wheels in the direction of the curb.▷On uphill grades or on a slope, also secure
the vehicle, e.g. with a wheel chock.◀Seite 126ControlsDriving comfort126
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Overview
Buttons on the steering wheelPress but‐
tonFunctionCruise control on/off, interrupt‐
ing, refer to page 127.Store/maintain speed, refer to
page 128.Resume speed, refer to
page 129.Reduce distance, refer to
page 128.Increase distance, refer to
page 129.Rocker switch.
Change/maintain speed, refer
to page 128.
Buttons are arranged according to vehicle's
series, optional features and country specifica‐
tions.
Camera A camera serves to detect vehicles.
The camera is installed near the interior rear‐
view mirror.
Keep the windshield in the area behind the in‐
terior rearview mirror clean and clear.
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 Dynamic Stability Control will be
switched on if needed.
Switch off
To 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 Press button on the steering wheel.
If interrupting the system while stationary,
press on the brake pedal at the same time.
The system is automatically interrupted in the
following situations:
▷When the brakes are applied.▷When selector lever position D is disen‐
gaged.▷When Dynamic Traction Control DTC is
activated.▷When DSC is actively controlling stability.▷If the safety belt and the driver's door are
opened while the vehicle is standing still.▷If the detection range of the camera is im‐
paired, e.g., by soiling, heavy precipitation
or glare effects from the sun.Seite 127Driving comfortControls127
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▷After a longer stationary period when the
vehicle has been braked to a stop by the
system.
Maintaining, storing, and changing the
speed
Information 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 interfere in the respective situations.◀
WARNING
Risk of accident due to too high speed
differences to other vehicles, e.g. in the follow‐
ing situations:
▷When fast approaching a slowly moving
vehicle.▷Suddenly swerving vehicle onto the own
lane.▷When fast approaching standing vehicles.
There is risk of injuries or danger to life. Watch
traffic closely and actively interfere in the re‐
spective situations.◀
Maintaining/storing the speed Press button.
Or:
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.
This is displayed in the speedometer and
briefly in the instrument cluster, refer to
page 129.
DSC Dynamic Stability Control will be
switched on if needed.
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.
Hold the rocker switch in position to repeat the
action.
Distance WARNING
The system does not relieve 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.
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The instrument cluster displays the set
distance.
Increase distance Press button repeatedly until the de‐
sired distance is set.
The instrument cluster displays the set
distance.
Call up desired speed and distance
While driving Press button with the system inter‐
rupted. Desired speed and distance
are then continued with these settings. The
selected speed is briefly displayed in the info
display.
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.
While standing
The system brought the vehicle to a complete
standstill:
▷Green marking in the speedometer:
Your vehicle accelerates automatically as
soon as the vehicle in the camera's range
moves off.▷Speedometer markings turn orange: no au‐
tomatic driving off.
To accelerate to the desired speed auto‐
matically, briefly press the accelerator or
press the RES or SET button.
Rolling bars in the distance display indicate
that the vehicle in the camera detection range
has moved away.
The system was paused or your vehicle was
brought to a halt actively through stepping on
the brake pedal and it is standing behind an‐
other vehicle:1. Press button to call up a stored
desired speed.2.Release the brake pedal.3.Step on the accelerator briefly, or press the
RES rocker switch when the vehicle ahead
of you drives away.
Changing between cruise control with/
without distance control
WARNING
The system does not react to traffic driv‐
ing ahead of you, but instead maintains the
stored speed. There is risk of accidents or risk
of property damage. Adjust the desired speed
to the traffic conditions and brake as needed.◀
Changing to Active Cruise Control without dis‐
tance control:
Press and hold this button, or
Press and hold this button.
The indicator lamp in the instrument
cluster lights up.
In order to switch back to Active Cruise Con‐
trol with distance control, press the button
again briefly.
After switching, a Check Control message is
displayed.
Displays in the instrument cluster
Desired speed
▷The marking lights up green:
the system is active.▷The marking lights up or‐
ange: the system has been
interrupted.Seite 129Driving comfortControls129
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▷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.
Distance displayDistance 1Distance 2Distance 3Distance 4
This value is set
automatically af‐
ter the system is
switched on.Rolling bars: the detected vehicle has driven
away.
ACC is no longer accelerating. To accelerate
further, activate ACC by briefly stepping on
the gas, pressing the RES button or rocker
switch.
Indicator/warning lights
Symbol lights up orange:
A vehicle has been detected ahead of
you.
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.
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 de‐
tected.
Displays in the Head-up Display Some system information can also be dis‐
played in the Head-up Display.
System limits
Speed range The system can also be activated when sta‐
tionary.
The system is best used on well-constructed
roads.
The desired speed can be set between
20 mph/30 km/h and 85 mph/140 km/h.
Comply with the legal speed limit in every sit‐
uation when using the system.Seite 130ControlsDriving comfort130
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Detection range
The detection capacity of the system and the
automatic braking capacity are limited.
Two-wheeled vehicles for instance might not
be detected.
WARNING
The system does not relieve 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 interfere in the re‐
spective situations.◀
Deceleration
The system also does not decelerate in the fol‐
lowing situations:
▷In case of pedestrians, cyclists or similar
slow road users.▷For red traffic lights.▷For cross traffic.▷For oncoming traffic.▷Unlit vehicles or vehicles with nonworking
lighting at night.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, e.g.,
when rapidly approaching a truck. When a ve‐
hicle driving ahead of you is reliably detected,
the system requests that the driver intervene
by braking and carrying out evasive maneu‐
vers, if needed.
WARNING
The system does not relieve 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 interfere in the re‐
spective situations.◀
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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 reactivated and controls speed independ‐
ently.
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, press on the accelerator pedal.
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, e.g.
by braking, steering or evading.
Malfunction
A Check Control message is displayed if the
system fails or was automatically deactivated.
The system may not be fully functional in the
following situations:▷When an object was not correctly de‐
tected.▷In heavy fog, rain, sprayed water or snow‐
fall.▷In tight curves.▷If the field of view of the camera or the front
windshield are dirty or covered.▷When driving toward bright lights.▷Up to 20 seconds after the start of the en‐
gine, via the Start/Stop button.▷During calibration of the camera immedi‐
ately after vehicle delivery.
Cruise control
The concept The system maintains a preset speed via the
buttons on the steering wheel. The system
brakes on downhill gradients if engine braking
is insufficient.
General information
Depending on the driving settings, the features
of the cruise control can change in certain
areas.
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InformationWARNING
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.◀
Overview
Buttons on the steering wheel
Press buttonFunctionCruise control on, off, pause,
refer to page 133.Store speed, refer to
page 134.Resume speed, refer to
page 134.Rocker switch: change, hold,
store speed, refer to
page 134.
Controls
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 Dynamic Stability Control will be
switched on if needed.
Switch off
WARNING
The system does not relieve 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. Adjustthe driving style to the traffic conditions. Watch
traffic closely and actively interfere in the re‐
spective situations.◀
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 When active, press the button on the
steering wheel.
The system is automatically interrupted in the
following situations:
▷When the brakes are applied.▷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.▷If selector lever position N is set.▷If DTC Dynamic Traction Control is acti‐
vated or DSC is deactivated.▷When DSC is actively controlling stability.▷If HDC is activated.Seite 133Driving comfortControls133
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