At a glance
Buttons on the steering wheelPress the
buttonFunctionCruise control on/off, interrupt,
refer to page 137Store/maintain speed, refer to
page 138Resume speed, refer to
page 139Reduce distance, refer to
page 139Increase distance, refer to
page 139With Traffic Jam Assist: Adjust
distance, refer to page 139Rocker switch:
Change/maintain speed, refer to
page 138Traffic Jam Assist: Traffic Jam
Assist on/off, interrupting, refer
to page 143
The arrangement of the buttons varies accord‐
ing to the how the vehicle is equipped or coun‐
try-specific variants.
Radar sensor
A radar sensor is located in the front bumper
for detecting vehicles on the road ahead of the
vehicle.
A dirty or covered sensor may hinder the de‐
tection of vehicles.
▷If necessary, clean the radar sensor. Re‐
move layers of snow and ice carefully.▷Do not cover the view field of the radar
sensor.
Camera
The camera is located near the base of the
mirror.
Keep the windshield in the area behind the in‐
terior rearview 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
interior mirror, e.g., carefully remove salt
residue in the winter.
Switching on/off and interrupting cruise control
Switching on Press the button on the steering
wheel.
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The indicator lamps in the instrument cluster
light up and the mark in the speedometer is set
to the current speed.
Cruise control can be used.
Switching off Deactivated or interrupted system
If the system is deactivated or inter‐
rupted, actively intervene by braking, steering
and, if necessary, with evasive maneuvers; oth‐
erwise, there is the danger of an accident oc‐
curring.◀
If switching off the system while stationary,
press on the brake pedal at the same time.
Press the button on the steering
wheel.▷If active: press twice.▷If interrupted: press once.
The displays go out. The stored desired speed
and distance are deleted.
Interrupting Press the 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 the clutch pedal is depressed.▷When selector lever position D is disen‐
gaged.▷When DTC Dynamic Traction Control is
activated or DSC is deactivated.▷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 when the vehicle is standing still.▷If the system has not detected objects for
an extended period, e.g., on a road with
very little traffic without road edge line
markings.▷If the detection range of the radar is dis‐
rupted, for example, by dirt or heavy fog.
Maintaining/storing the speed
Press the 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, refer to page 140, in the
speedometer and briefly in the instrument
cluster.
When cruise control is maintained or stored,
DSC Dynamic Stability Control is switched on,
if necessary.
Changing, maintaining, and storing
the speed
The rocker switch can be pressed while the
system is interrupted to maintain and store the
current speed. DSC Dynamic Stability Control
is switched on, if necessary.
Adapting the desired speed
Adapt the desired speed to the road con‐
ditions and be ready to brake at all times; oth‐
erwise, there is the danger of an accident oc‐
curring.◀
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Traffic Jam AssistThe concept
In congestion situations, the system controls
the speed, steers independently as required
and keeps the vehicle close to the center of
the lane.
To the extent possible, the system automati‐
cally adjusts the speed to a slower vehicle
ahead of you. 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 sys‐
tem automatically reduces the speed, applies
the brakes lightly, or accelerates again if the
vehicle ahead begins moving faster.
When lane markings are detected, the system
keeps the vehicle in the center of the lane. For
this purpose, the system steers independently
as needed, for example, during cornering.
General information
The congestion assistant determines speed
and distance from the vehicle in front and the
position of the lane markings via a radar sensor
and a camera.
Sensors on the steering wheel detect whether
the steering wheel is being touched.
The system is deactivated as soon as the
steering wheel is no longer being touched.
In order to be able to use the Congestion As‐
sistant, place your hands around the steering
wheel.
When driving with gloves or with protective
covers, contact with the steering wheel cannot
be detected by the sensors. The system in this
case cannot be used.
Hints Personal responsibility
Even an active system does not release
the driver from personal responsibility for the
driving process, especially for lane tracking,adaptation of speed, distance and driving style
to the traffic conditions.
Because of technical system limits, the system
cannot independently react appropriately in all
traffic situations.
Monitor the driving process, the surrounding
area and what is occurring in traffic continu‐
ously and attentively and actively intervene as
required, e.g., by braking, steering or making
an evasive maneuver.◀
Unfavorable weather conditions
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
recognition of vehicles as well as short-term
interruptions for vehicles and lane markings
that are already detected. Drive attentively, and
react to the current traffic events. Intervene ac‐
tively when necessary, e.g., by braking, steer‐
ing or making an evasive maneuver, otherwise,
there is danger of an accident.◀
Functional requirements▷Drive on approved road type. The data on
this are stored in the navigation system.
Approved road types are highways.▷Sufficient lane width.▷Lane marking on both sides is detected.▷Vehicle driving ahead is detected.▷Speed below 25 mph/40 km/h.▷Both hands on the steering wheel rim.▷Sufficient curvature.▷Drive in the center of the lane.Seite 143Driving comfortControls143
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At a glance
Buttons on the steering wheelPress the
buttonFunctionCongestion Assistant ON/OFF,
Pause, refer to page 144.Rocker switch:
Store, change/maintain speed,
refer to page 138.Maintain, store speed, refer to
page 138.Resume speed, refer to
page 139.Adjust distance, refer to
page 139.
Radar sensor
A radar sensor is located in the front bumper
for detecting vehicles on the road ahead of the
vehicle.
A dirty or covered sensor may hinder the de‐
tection of vehicles.
▷If necessary, clean the radar sensor. Re‐
move layers of snow and ice carefully.▷Do not cover the view field of the radar
sensor.Camera
The camera is located near the base of the
mirror.
Keep the windshield in the area behind the in‐
terior rearview 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
interior mirror, e.g., carefully remove salt
residue in the winter.
Switching on/off and pausing
Switching on Press the button.
▷Prepare system: press once.▷Activate system:
If the ACC is not activated: press rocker.
With ACC activated: system is ready.
Drive in the center of the lane.
The system is automatically activated be‐
low 25 mph/40 km/h.
If ACC is not activated: indicator lamp
in the instrument cluster comes on.
If ACC is not activated: indicator lamp
in the instrument cluster comes on.
Congestion Assistant can be used.
With Congestion Assistant switched on, the
Pedestrian Warning system is active. The set‐
ting in the Control Display is unchanged.
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Switching offDeactivated or interrupted system
If the system is deactivated or inter‐
rupted, actively intervene by braking, steering
and, if necessary, with evasive maneuvers; oth‐
erwise, there is the danger of an accident oc‐
curring.◀
Press the button.
The indicator goes out. Stored desired speed
and distance are still kept by the ACC.
The system does not carry out a steering
movement.
Interrupting When active, press the button.
The system is automatically interrupted in the
following situations:▷At a speed above 25 mph/40 km/h.▷With only one detected lane marking.▷When you leave the limited access high‐
way.▷When the steering wheel is released.▷When you intervene in the steering.▷When you leave your own lane.▷When there is no vehicle ahead.▷When the turn signal is on.▷When the lane is too narrow.
Rolling bars:
Congestion assistant is no longer ac‐
celerating. To accelerate further, acti‐
vate ACC by briefly pressing the accelerator,
pressing the RES button or rocker switch.
Red flashing and signal tone:
Congestion Assistant is interrupted.
The system does not carry out a steer‐
ing movement. ACC exercises control.
If the system conditions are met, the system
reactivates automatically.
When you leave the approved road type, the
system is first interrupted and then shuts
down.
Distance Selecting a distance
Adjust the distance according to the traf‐
fic and weather conditions; otherwise, there is
the danger of an accident occurring. Maintain
the prescribed safety distance.◀
Adjust distance Press the button repeatedly until the
desired distance is set.
Distance to vehicle ahead of you
The selected distance to the vehicle driving
ahead of you is shown.Distance displayDistance 1Distance 2Distance 3Distance 4
This value is set after the system is
switched on.
Selecting a distance
Adjust the distance according to the traf‐
fic and weather conditions; otherwise, there is
the danger of an accident occurring. Maintain
the prescribed safety distance.◀
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Displays in the instrument clusterSymbolDescriptionCongestion Assistant and Distance
Control on standby.Congestion Assistant on standby.
Distance control controls within the
set distance.Congestion Assistant activated.
The system controls the speed and
assists with maintaining the lane.Rolling bars: speed is no longer in‐
creased by the congestion assistant
at 25 mph/40 km/h. When the
speed is increased by the driver, the
system does not perform any more
steering movements.Red flashing and signal tone: con‐
gestion Assistant is interrupted.
The system does not carry out a
steering movement. ACC exercises
control.
System limits
When driving within narrow driving lanes, e.g.,
in construction zones or rescue lanes, the sys‐
tem cannot be activated or meaningfully used.
Limited detection capacity
Because of the limits to the detection ca‐
pacity, you should be alert at all times so that
you can intervene if necessary; otherwise,
there is the danger of an accident occurring.◀
Complying with country-specific laws
When the Congestion Assistant is used,
observe specific national laws.◀
Cruise control
The concept The system is functional at speeds beginning
at approx. 20 mph/30 km/h.
It maintains the speed that was set using the
control elements on the steering wheel.
The system brakes on downhill gradients if en‐
gine braking action is insufficient.
Unfavorable conditions
Do not use the system if unfavorable
conditions make it impossible to drive at a con‐
stant speed, for instance:▷On curvy roads.▷In heavy traffic.▷On slippery roads, in fog, snow or rain, or
on a loose road surface.
Otherwise, you could lose control of the vehi‐
cle and cause an accident.◀
General information
Depending on the set driving program, the
characteristics of the cruise control can
change in certain areas.
Controls
At a glance
Press the
buttonFunctionCruise control on/off, interrupt‐
ing, refer to page 147Store/maintain speed, refer to
page 147Resume speed, refer to
page 148Rocker switch:
Change/maintain speed, refer
to page 147Seite 146ControlsDriving comfort146
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The arrangement of the buttons varies accord‐
ing to the how the vehicle is equipped or coun‐
try-specific variants.
Switching on Press the button on the steering
wheel.
The marking in the speedometer is set to the
current speed.
The cruise control can be used.
Switching off Deactivated or interrupted system
If the system is deactivated or inter‐
rupted, actively intervene by braking and, if
necessary, with evasive maneuvers; otherwise,
there is the danger of an accident occurring.◀
Press the 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.
The system is automatically interrupted if:
▷The brakes are applied.▷The clutch pedal is depressed for a few
seconds or released while a gear is not en‐
gaged.▷The transmission position D is disengaged.▷DTC Dynamic Traction Control is activated
or DSC is deactivated.▷DSC is actively controlling stability.▷HDC is activated.▷When SPORT+ is activated with Driving
Dynamics Control.Maintaining/storing the current speed
Press the 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, refer to page 148, in the
speedometer and briefly in the instrument
cluster.
When cruise control is maintained or stored,
DSC Dynamic Stability Control is switched on,
if necessary.
Changing/maintaining speed The rocker switch can be pressed while the
system is interrupted in order to maintain and
store the current speed.
Adapting the desired speed
Adapt the desired speed to the road con‐
ditions and be ready to brake at all times; oth‐
erwise, there is the danger of an accident oc‐
curring.◀
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Switching on/off manuallyPress the button.▷On: the LED lights up.▷Off: the LED goes out.
The PDC is shown on the Control Display.
Switching on the rearview camera via
the iDrive
With PDC activated or Top View switched on:
"Rear view camera"
The rearview camera image is displayed.
Display on the Control Display
Functional requirement
▷The rearview camera is switched on.▷The trunk lid is fully closed.
Activating the assistance functions
More than one assistance function can be ac‐
tive at the same time.
▷Parking aid lines
"Parking aid lines"
Pathway and turning circle lines are dis‐
played.
▷Obstacle marking
"Obstacle marking"
Spatially-shaped markings are displayed.
Pathway lines▷Can be shown in the rearview camera im‐
age when in selector lever position R.▷Help you to estimate the space required
when parking and maneuvering on level
roads.▷Are dependent on the current steering an‐
gle and are continuously adjusted to the
steering wheel movements.
Turning circle lines
▷Can be shown in the rearview camera im‐
age.▷Show the course of the smallest possible
turning circle on a level road.▷Only one turning circle line is displayed af‐
ter the steering wheel is turned past a cer‐
tain angle.Seite 152ControlsDriving comfort152
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