▷If the clutch pedal is depressed for a few
seconds or released while a gear is not en‐
gaged.▷If selector lever position N is set.▷When DTC is activated or DSC is deacti‐
vated.▷When DSC is actively controlling stability.▷If the detection range of the camera is im‐
paired, for example, by soiling, heavy pre‐
cipitation or glare effects from the sun.▷If the vehicle in front decelerates below a
speed of approx. 20 mph/30 km/h.
Setting the speed
Maintaining/storing the speed Press
or button in the interrupted state.
When the system is switched on, the current
speed is maintained and stored as the desired
speed.
The stored speed is displayed on the
symbol.
DSC will be switched on if needed.
The speed can also be stored as follows: Press button.
Changing the speed
or button: press 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.
▷ or button: each time it is pressed to
the point of resistance, the desired speed
increases or decreases by approx.
1 mph/1 km/h.▷ or button: each time it is pressed
past the point of resistance, the desired
speed increases or decreases by a maxi‐
mum of 5 mph/10 km/h. or button: hold down to repeat the cor‐
responding 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.
The set distance is briefly displayed in
the left part of the instrument cluster.
Increase distance Press button repeatedly until the de‐
sired distance is set.
The set distance is briefly displayed in
the left part of the instrument cluster.
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.Seite 128CONTROLSDriving comfort128
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InformationMake 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 inter‐
rupted. Cruise control is continued with
the saved values. The selected distance is
briefly displayed in the CID (central information
display).
Switching distance control on/off
Information 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. ◀
Switching distance control off Press and hold this button.
Or: Press and hold this button.
The indicator lamp in the instrument
cluster lights up.
To switch distance control back on, press one of
the two buttons again briefly.
After changing over distance control, a Check
Control message is displayed.Displays in the instrument cluster
Desired speed and stored speed In addition to the indicator lamp, the
desired speed is displayed in the central
information display.▷Display lights up green: system is active, the
display indicates the desired speed.▷Display lights up orange: system is inter‐
rupted, the display indicates the stored
speed.▷No display: system is switched off.
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
Selected distance from the vehicle driving
ahead is briefly displayed in the left hand por‐
tion of the CID (central information display).
Distance displayDistance 1Distance 2Distance 3Distance 4
This value is set automatically after
the system is switched on.
Detected vehicle
Symbol lights up orange:
A vehicle has been detected ahead of
you.
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Indicator/warning lightsSymbol 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 brak‐
ing or make an evasive maneuver.
The system has been interrupted or dis‐
tance control is temporarily suppressed
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
The information from Active Cruise Control can
also be displayed in the Head-up Display.
Adjusting the Head-up Display, refer to
page 94.
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.
Deceleration
The system does not decelerate in the following
situations:▷For pedestrians, cyclists or similarly slow-
moving 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, 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.
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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 decelerates
you may compensate it by briefly accelerating.
After releasing the gas pedal the system is reac‐
tivated and controls speed independently.
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 traffic
situation. If necessary, intervene actively, for
example by braking, steering or evading.
Engine power
The desired speed may not be maintained on
uphill grades if engine power is insufficient.
Malfunction A Check Control message is displayed if the sys‐
tem fails or was automatically deactivated.
The system may not be fully functional in the
following situations:▷When an object was not correctly detected.▷In heavy fog, rain, sprayed water or snow‐
fall.▷In tight curves.▷If the field of view of the camera or the
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
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
The system is functional at speeds beginning at
approx. 20 mph/30 km/h.
Depending on the driving settings, the features
of the cruise control can change in certain
areas.
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InformationWARNING
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. ◀
Overview
Buttons on the steering wheel
Press buttonFunctionCruise control on/off, refer to
page 132.Store speed, refer to page 133.Pause cruise control, refer to
page 132.
Continue cruise control with the
last setting, refer to page 133.Increase speed, refer to
page 133.Reduce speed, refer to page 133.Switching on/off and interrupting cruise
control
Switching on Press button on the steering wheel.
The indicator lamp in the instrument
cluster lights up.
The current speed is adopted as the de‐
sired speed and is displayed with the
symbol in the instrument cluster.
Cruise control is active and maintains the set
speed.
DSC will be switched on if needed.
Switching off Press button on the steering wheel.
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.▷If selector lever position N is set.▷When DTC is activated or DSC is deacti‐
vated.▷When DSC is actively controlling stability.Seite 132CONTROLSDriving comfort132
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Setting the speed
Maintaining/storing the speed Press
or button in the interrupted state.
When the system is switched on, the current
speed is maintained and stored as the desired
speed.
The stored speed is displayed in the instrument
cluster.
DSC will be switched on if needed.
The speed can also be stored as follows:
Press button.
Changing the speed
or button: press 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.
▷ or button: each time it is pressed to
the point of resistance, the desired speed
increases or decreases by approx.
1 mph/1 km/h.▷ or button: each time it 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.▷ or button: pressing it to the resist‐
ance point and holding it accelerates or de‐
celerates the vehicle without requiring
pressure on the accelerator pedal. After the
button is released, the vehicle maintains its
final speed. Pressing the switch beyond the
resistance point causes the vehicle to accel‐
erate more rapidly.Continuing cruise control
General information
An interrupted cruise control can be continued
by calling up the stored speed.
InformationMake 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 The desired speed is displayed together
with the symbol.▷Display lights up green: system is
active, the display indicates the de‐
sired speed.▷Display lights up orange: system is inter‐
rupted, the display indicates the stored
speed.▷No display: system is switched off.
If no speed is indicated, it is possible that the
conditions necessary for operation are not cur‐
rently fulfilled.
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System limits
Engine power
The desired speed is also maintained downhill,
but may not be maintained on uphill grades if
engine power is insufficient.
PDC Park Distance Con‐trol
The concept
PDC is a support when parking. When you
slowly approach an object in the rear - or also
in the front of the vehicle if the feature is avail‐
able - then the object is reported through:▷Signal tones.▷Visual display.
General information
Ultrasound sensors in the bumpers measure
the distances from objects.
The maneuvering range, depending on obsta‐
cles and environmental conditions, is approx.
6 ft/2 m.
An acoustic warning is first given with the fol‐
lowing circumstances:
▷By the front middle sensors and the two
corner sensors at approx. 24 inches/60 cm.▷By the rear middle sensors at approx.
5 ft/1.50 m.▷When a collision is imminent.
Information
Loud noises from outside and inside the vehicle
may prevent you from hearing the PDC's signal tone.
WARNING
The system does not relieve from the per‐
sonal responsibility to correctly assess the traf‐
fic situation. There is risk of an accident. Adjust
the driving style to the traffic conditions. Watch
traffic and vehicle surroundings closely and ac‐
tively intervene in the respective situations. ◀
WARNING
Due to high speeds when PDC is acti‐
vated, the warning can be delayed due to phys‐
ical circumstances. There is a risk of injury or
risk of property damage. Avoid approaching an
object too fast. Avoid driving off fast while PDC
is not yet active. ◀
Overview
With front PDC: button in vehicle
Park assistance button
Ultrasound sensors Ultrasound sensors of the PDC,
for example in the bumpers.
Functional requirements To ensure full functionality:
▷Do not cover sensors, for example, with
stickers, bicycle racks.▷Keep the sensors clean and free of ice.
To clean: when using high-pressure washers,
do not spray the sensors for long periods and
maintain a distance of at least 12 inches/30 cm.
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Switching on/off
Switching on automatically PDC switches on automatically in the following
situations:▷If selector lever position R is engaged when
the engine is running.
The rearview camera also switches on.▷With front PDC: when obstacles are de‐
tected behind or in front of the vehicle by
PDC and the speed is slower than approx.
2.5 mph/4 km/h.
With front PDC: You can switch off automatic
activation on obstacle detection:
1. "Settings"2."Parking"3.Select setting.
Settings are stored for the profile currently
used.
Automatic deactivation during forward
travel
The system switches off when a certain driving
distance or speed is exceeded.
Switch the system back on if needed.
With front PDC: switching on/off
manually
Press park assistance button.
▷On: the LED lights up.▷Off: the LED goes out.
The rearview camera image is displayed when
the reverse gear is engaged when pressing the
park assistance button.
Display
Signal tones
When approaching an object, an intermittent sound indicates the position of the object. E. g.
if an object is detected to the left rear of the ve‐
hicle, a signal tone sounds from the left rear
speaker.
The shorter the distance to the object, the
shorter the intervals.
If the distance to a detected object is less than
approx. 10 inches/25 cm, a continuous tone is
sounded.
With front PDC: if objects are located both in
front of and behind the vehicle, an alternating
continuous signal is sounded.
The signal tone is switched off, when selector
lever position P is engaged on vehicles with
Steptronic transmission.
Volume
The ratio of the PDC signal tone volume to the
entertainment volume can be adjusted.1. "Multimedia", "Radio" or
"Settings"2."Tone"3."Volume settings"4."PDC"5.To adjust: turn the Controller.6.To store: press the Controller.
Settings are stored for the profile currently
used.
Visual warning The approach of the vehicle to an object can be
shown on the Control Display. Objects that are
farther away are already displayed on the Con‐
trol Display before a signal sounds.
A display appears as soon as Park Distance
Control (PDC) is activated.
The range of the sensors is represented in col‐
ors: red, green and yellow.
When the image of the rearview camera is dis‐
played, the switch can be made to PDC:
"Rear view camera"
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