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Activating HDC
Press the button; the LED above the
button lights up.
The LED flashes when the brakes are applied
automatically.
Deactivating HDC Press the button again; the LED goes
out. HDC is automatically deactivated
above approx. 37 mph/60 km/h.
Using HDC
HDC can be used in every driving position.
Displays in the instrument cluster
1Display for target speed2HDC display
Malfunction
If the HDC display goes out during HDC opera‐
tion or is not displayed: HDC is not available due
to high brake temperatures or DSC has failed.
Drive-off assistant
This system supports driving away on gradients.
The handbrake is not required.1.Hold the vehicle in place with the foot brake.2.Release the foot brake and drive away with‐
out delay.
Depending on the vehicle load, the vehicle may
roll back slightly.
Driving off without delay
After releasing the foot brake, start driving
without delay, since the drive-off assistant will
not hold the vehicle in place for more than ap‐
prox. 2 seconds and the vehicle will begin rolling
back.◀
Servotronic
The concept
The Servotronic varies the steering force re‐
quired to turn the wheels depending on the
speed at which you are driving.
Power steering provides strong support at low
speeds, which means that less effort is needed
to turn the wheels. Power steering support less‐
ens as your speed increases.
Malfunction The warning lamp lights up.A mes‐
sage appears on the Control Display.
Servotronic is malfunctioning or has
failed. Have the system checked as soon as pos‐
sible.
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Driving comfortVehicle equipment
This chapter describes all series equipment as
well as country-specific and special equipment
offered for this model series.Therefore, it also
describes equipment that may not be found in
your vehicle, for instance due to the selected
special equipment or the country version. This
also applies to safety-related functions and sys‐
tems.
Cruise control
The concept
The system is functional at speeds beginning at
approx. 20 mph/30 km/h.
The speed specified using the lever on the
steering column is maintained.
The system brakes on downhill gradients if en‐
gine braking action is insufficient.
Do not use cruise control
Do not use the system if unfavorable con‐
ditions make it impossible to drive at a constant
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 vehicle
and cause an accident.◀
One lever for all functions1Storing and maintaining speed or accelerat‐
ing2Storing and maintaining speed or deceler‐
ating3Deactivating cruise control4Resuming a speed stored beforehand
Maintaining current speed
Push, arrow 1, or pull, arrow 2, the lever to the
resistance point.
The car's current speed is stored and main‐
tained. It is displayed on the speedometer and
briefly in the instrument cluster.
On uphill gradients, it may prove impossible to
maintain the set speed if current engine power
output is insufficient. If the engine braking effect
is insufficient on downhill slopes, the system will
brake the vehicle slightly.
Increasing desired speed
Repeatedly press the lever to the resistance
point or beyond, arrow 1, until the desired speed
is reached.
▷Each time the lever is pressed to the point of
resistance, the desired speed increases by
approx. 1 mph/1 km/h.▷Each time the lever is pressed beyond the
resistance point, the desired speed is in‐
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The system stores and maintains the speed.
Accelerating using the lever
Accelerating slightly:
Press the lever to the resistance point, arrow 1,
until the desired speed is reached.
Accelerating significantly:
Press the lever beyond the resistance point, ar‐
row 1, until the desired speed is reached.
The vehicle accelerates without pressure on the
accelerator pedal. The system stores and main‐
tains the speed.
Decreasing speed
Repeatedly pull the lever to the resistance point
or beyond, arrow 2, until the desired speed is
displayed.▷Each time the lever is pulled to the resist‐
ance point, the desired speed is decreased
by approx. 1 mph/1 km/h.▷Each time the lever is pulled beyond the re‐
sistance point, the desired speed is reduced
by up to 5 mph/10 km/h until the minimum
speed of 20 mph/30 km/h is achieved.
The system stores and maintains the speed.
Deactivating cruise control
Push the lever upwards or downwards, arrow 3.
The displays in the speedometer go out.
In addition, the system is automatically deacti‐
vated when:
▷The brakes are applied.▷Selector lever position N is engaged or
transmission position D is disengaged.▷When DTC is activated or DSC is deacti‐
vated.▷When DSC or ABS is intervening.
Cruise control is not deactivated by depressing
the accelerator pedal. Once the accelerator
pedal is released, the stored speed is achieved
again and maintained.
Warning lamp
The warning lamp comes on when
cruise control has been deactivated as
a result of DSC intervention, for exam‐
ple. A message appears on the Control Display.
Resuming a speed stored beforehand
Press the button, arrow 4. The last stored speed
is resumed and maintained.
In the following cases, the stored speed value is
deleted and cannot be called up again:▷When driving stability control systems inter‐
vene.▷When selector lever position N is engaged
or transmission position D is disengaged.▷When the ignition is switched off.
Displays in the instrument cluster
1Stored speed2Selected speed is displayed briefly
If the display --- mph or --- km/h appears briefly,
conditions may not be adequate to operate the
system.
Call up Check Control messages, refer to
page 78.
Malfunction The warning lamp lights up. The sys‐
tem is malfunctioning or has failed.
A message appears on the Control
Display. More information, refer to page 77.
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Park Distance Control PDC
The concept
In addition to the PDC Park Distance Control, the
backup camera, refer to page 102, can be
switched on.
PDC supports you when parking. A slow ap‐
proach to an object in front of or behind your ve‐
hicle is announced by:▷Signal tones.▷Visual display.
Measurement
Measurements are made by ultrasound sensors
in the bumpers.
The range is approx. 6 ft/2 m.
An acoustic warning is first given:
▷By the front sensors and two rear corner
sensors at approx. 24 in/60 cm.▷By the rear middle sensors at approx.
5 ft/1.50 m.
System limits
Check the traffic situation as well
PDC cannot serve as a substitute for the
driver's personal judgment of the traffic situa‐
tion. Check the traffic situation around the vehi‐
cle with your own eyes. Otherwise, an accident
could result from road users or objects located
outside of the PDC detection range.
Loud noises from outside and inside the vehicle
may prevent you from hearing the PDC's signal
tone.◀
Avoid driving quickly with PDC
Avoid approaching an object quickly.
Avoid driving away quickly while PDC is not yet
active.
For technical reasons, the system may other‐
wise be too late in issuing a warning.◀
Limits of ultrasonic measurement
The detection of objects can reach the physical
limits of ultrasonic measurement, for instance:▷With tow bars and trailer hitches.▷With thin or wedge-shaped objects.▷With low objects.▷With objects with corners and sharp edges.
Low objects already displayed, e.g., curbs, can
move into the blind area of the sensors before or
after a continuous tone sounds.
High, protruding objects such as ledges may not
be detected.
False warnings
PDC may issue a warning under the following
conditions even though there is no obstacle
within the detection range:
▷In heavy rain.▷When sensors are very dirty or covered in
ice.▷When sensors are covered in snow.▷On rough road surfaces.▷In large buildings with right angles and
smooth walls, e.g., in underground garages.▷In heavy exhaust.▷Due to other ultrasound sources, e.g.,
sweeping machines, high pressure steam
cleaners or neon lights.
Switching on automatically
With the engine running or the ignition switched
on, shift the selector lever into position R.
Switching off automatically when
driving forward
The system switches off when a certain distance
or speed is exceeded.
Switch on the system again if necessary.
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Switching on/off manually
Press the button.
▷On: the LED lights up.▷Off: the LED goes out.
Signal tones
When approaching an object, an intermittent
tone is sounded that indicates the position of the
object. For example, if an object is detected to
the left rear of the vehicle, a signal tone sounds
from the left rear speaker.
The shorter the distance to the object becomes,
the shorter the intervals.
If the distance to a detected object is less than
approx. 12 in/30 cm, a continuous tone is
sounded.
If objects are located both in front of and behind
the vehicle, an alternating continuous signal is
sounded.
The intermittent tone is interrupted after approx.
3 seconds:
▷If the vehicle stops in front of an object that
is detected by only one of the corner sen‐
sors.▷If moving parallel to a wall.
The signal tone is switched off:
▷When the vehicle moves away from an ob‐
ject by more than approx. 4 in/10 cm.▷When transmission position P is engaged.Volume
You can set the volume of the PDC signal tone,
refer to page 161.
The setting is stored for the remote control cur‐
rently in use.
Visual warning
The approach to an object can be shown on the
Control Display. Objects that are farther away
are displayed on the Control Display before a
signal tone sounds.
The display appears as soon as PDC is acti‐
vated.
If the last image selected was the rear view cam‐
era, this is displayed again. To switch to PDC:
"Switch off rear view camera"
The setting is stored for the remote control cur‐
rently in use.
Image on the Control Display
Switching on the rear view camera
using iDrive
With PDC activated:
"Rear view camera"
The image of the rear view camera is displayed.
The setting is stored for the remote control cur‐
rently in use.
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Malfunction
A Check Control message, refer to page 77, is
displayed in the instrument cluster.
The areas in front of and behind the vehicle ap‐
pear in shaded form on the Control Display. PDC
has failed. Have the system checked.
To ensure full operability:
▷Keep the sensors clean and free of ice.▷When using high-pressure washers, do not
spray the sensors for long periods and main‐
tain a distance of at least 12 in/30 cm.
Rear view camera
The concept
The rear view camera assists you when parking
and maneuvering in reverse. To accomplish this,
the region behind your vehicle is shown on the
Control Display.
System limits Check the traffic situation as well
Check the traffic situation around the ve‐
hicle with your own eyes. Otherwise, an accident
could result from road users or objects located
outside the picture area of the backup camera. ◀
Detection of objects
High, protruding objects such as ledges
may not be detected by the backup camera.◀
Switching on automatically
With the engine running or the ignition switched
on, shift the selector lever into position R.
The image of the rear view camera is displayed
when the system has been switched on using
iDrive.
Switching off automatically when
driving forward
The system switches off when a certain distance
or speed is exceeded.
Switch on the system again if necessary.
Switching on/off manually
Press the button.
▷On: the LED lights up.▷Off: the LED goes out.
If PDC is displayed, switch on the backup cam‐
era via the iDrive, refer to page 101.
Assistance functions
Functional requirement
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Pathway lines▷Can be displayed in the image of the rear
view camera when the transmission is in re‐
verse.▷Help estimate the required amount of space
when parking and maneuvering on a flat road
surface.▷Depend on the current steering angle and
are continuously adapted to movements of
the steering wheel.
Show the parking aid lines via the iDrive, refer to
page 104.
Turning lines
▷Can be displayed in the image of the rear
view camera.▷Show the path of the smallest turning circle
on a flat road surface.▷When the steering wheel is turned, only one
turning line is displayed.
Show the parking aid lines via the iDrive, refer to
page 104.
Parking using pathway and turning
lines1.Position the vehicle so that the turning lines
lead into the margins of the parking space.2.Turn the steering wheel to the point where
the pathway line covers the corresponding
turning circle line.
Obstacle marking
▷Three-dimensionally shaped markings can
be displayed in the image of the rear view
camera.
Their color gradation corresponds to the mark‐
ings in PDC. This helps estimate the distance to
the object pictured.
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Show the obstacle marking via the iDrive, refer
to page 104.
Activating assistance functions
Several assistance functions can be active at the
same time.
Showing the parking aid lines
"Parking aid lines"
Pathway and turning lines are displayed.
Showing the obstacle marking
"Obstacle marking"
Three-dimensionally-shaped markings are dis‐
played.
Image on the Control Display
Switching on the rear view camera
using iDrive
With PDC activated:
"Rear view camera"
The image of the rear view camera is displayed.
The setting is stored for the remote control cur‐
rently in use.
Brightness
With the rear view camera switched on:
1. Select the symbol.2.Turn the controller until the desired setting
is reached and press the controller.
Contrast
With the rear view camera switched on:
1. Select the symbol.2.Turn the controller until the desired setting
is reached and press the controller.Camera
The lens of the rear view camera is under the
grasping lip of the tailgate.
The presence of dirt can impair image quality.
Clean the lens with a moist, nonabrasive cloth.
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