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▷When a vehicle is approaching at a speed
much faster than your own.▷In heavy fog, rain or snowfall.▷In tight curves or on narrow lanes.
Radar sensors
The radar sensors are located under the rear
bumper.
The system may not be fully functional in the
following situations:
▷Dirty or icy bumper.▷Stickers on the bumper.
A Check Control message is displayed when the
system is not fully functional.
For US owners only
The transmitter and receiver units comply with
part 15 of the FCC/Federal Communication
Commission regulations. Operation is governed
by the following:
FCC ID:
▷NBG009014A.
Compliance statement:
This device complies with part 15 of the FCC
Rules. Operation is subject to the following two
conditions:
▷This device may not cause harmful interfer‐
ence, and▷this device must accept any interference re‐
ceived, including interference that may
cause undesired operation.Any unauthorized modifications or changes to
these devices could void the user's authority to
operate this equipment.
Brake force display
The concept▷During normal brake application, the outer
brake lamps light up.▷During heavy brake application, the inner
brake lamps light up in addition.Seite 105SafetyControls105
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Driving stability control systemsVehicle equipment
All standard, country-specific and optional
equipment that is offered in the model series is
described in this chapter. Therefore, equipment
is also described that is not available in a vehicle,
e. g., because of the selected optional equip‐
ment or country variant. This also applies for
safety-related functions and systems.
Antilock Brake System ABS
ABS prevents locking of the wheels during brak‐
ing.
The vehicle remains steerable even during full
brake applications, thus increasing active
safety.
ABS is operational every time you start the en‐
gine.
Brake assistant
When you apply the brakes rapidly, this system
automatically produces the maximum braking
force boost. It thus helps to achieve the shortest
possible braking distance during full braking.
This system utilizes all of the benefits provided
by ABS.
Do not reduce the pressure on the brake pedal
for the duration of the full braking.
Drive-off assistant
This system supports driving away on gradients.
The parking brake is not required.1.Hold the vehicle in place with the foot brake.2.Release the foot brake and drive away with‐
out delay.After the foot brake is released, the vehicle is
held in place for approx. 2 seconds.
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.◀
DSC Dynamic Stability
Control
The concept
DSC prevents traction loss in the driving wheels
when driving away and accelerating.
DSC also recognizes unstable vehicle condi‐
tions, such as fishtailing or nose-diving. Subject
to physical limits, DSC helps to keep the vehicle
on a steady course by reducing engine speed
and by applying brakes at individual wheels.
Adjust your driving style to the situation
An appropriate driving style is always the
responsibility of the driver.
The laws of physics cannot be repealed, even
with DSC.
Therefore, do not reduce the additional safety
margin by driving in a risky manner.◀
Indicator/warning lamps The indicator lamp flashes: DSC con‐
trols the drive forces and brake forces.
The indicator lamp lights up: DSC has
failed.Seite 106ControlsDriving stability control systems106
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M Dynamic Mode MDM
M Dynamic Mode makes it possible to drive on
a dry roadway with high longitudinal and trans‐
verse acceleration but with limited driving sta‐
bility.
Only in the absolute limit area does the system
intervene for stabilization by reducing the en‐
gine power and by braking interventions on the
wheels. In this driving condition, additional
steering corrections may be necessary.
Limited stabilizing interventions
When M Dynamic Mode is activated, sta‐
bilizing interventions are carried out only to a re‐
duced extent. You must react yourself; other‐
wise, there is the danger of an accident
occurring.◀
To increase vehicle stability, activate DSC again
as soon as possible.
Activating MDM Press the button briefly.
The MDM and DSC OFF indicator lamps
on the instrument cluster light up.
Deactivating MDM Press the button.
The MDM and DSC OFF indicator lamps
go out.
Via M Drive1."Settings"2."M Drive 1" or"M Drive 2"3. Select the symbol.4."MDM"
To open M Drive with the selected settings,
press the corresponding button on the steering
wheel:
▷▷
A message appears in the instrument cluster.
This message is confirmed by pressing the but‐
ton again.
Deactivating MDM
Press the appropriate button 1 or button 2 on
the steering wheel again.
M Dynamic Mode and the settings selected un‐
der M Drive are deactivated.
Indicator/warning lamps Indicator lamps light up:
M Dynamic Mode is activated.
DSC indicator lamp also flashes:
M Dynamic Mode controls the drive
forces and brake forces.
Indicator lamps light up:
M Dynamic Mode or DSC has failed.
Deactivating DSC: DSC OFF
When DSC is deactivated, driving stability is re‐
duced during acceleration and when driving in
bends.
To increase vehicle stability, activate DSC again
as soon as possible.
Deactivating DSC Press and hold the button, but not longer
than approx. 10 seconds, until the indica‐
tor lamp for DSC OFF lights up in the instrument
cluster and DSC OFF is displayed.
The DSC system is switched off.
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Activating DSCPress the button.
DSC OFF and the DSC OFF indicator lamp
go out.
Via M Drive1."Settings"2."M Drive 1" or"M Drive 2"3. Select the symbol.4."DSC OFF"
To open M Drive with the selected settings,
press the corresponding button on the steering
wheel:
▷▷
A message appears in the instrument cluster.
This message is confirmed by pressing the but‐
ton again.
Indicator/warning lamps
When DSC is deactivated, DSC OFF is dis‐
played in the instrument cluster.
The indicator lamp lights up: DSC is de‐
activated.
Hill Start Assistant
The Hill Start Assistant provides assistance with
starting off on a hill, Drive-off assistant, refer to
page 106.
Active M differential
The concept
The active M differential assures continuously
variable locking of the rear axle differential de‐
pending on the driving situation. This prevents
individual rear wheels from spinning even when
DSC is switched off and in M Dynamic Mode, so
that optimum traction is always assured in all
driving situations.
The driver is responsible adapting his or her
driving behavior to the situation.
Electronic Damper Control
EDC
The concept
This system reduces undesirable vehicle mo‐
tion when using a dynamic driving style or trav‐
eling on uneven road surfaces.
The system enhances driving dynamics and
comfort as required for the road surface and
driving style.
Programs
Setting options for calibrating the shock absorb‐
ers:▷"Comfort": comfort-oriented.▷"Sport": balanced out.▷"Sport Plus": consistently sporty.
Selecting a channel
Via M Drive
1."Settings"2."M Drive 1" or"M Drive 2"3. Select the symbol.4.Select the desired channel.
When M Drive is active, setting is immedi‐
ately applied.
To activate M Drive with the selected settings,
press the corresponding button on the steering
wheel:
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Using the button
Press button repeatedly until the desired
program is displayed in the instrument
cluster.
Display in the instrument cluster Electronic Damper Control EDC with se‐
lected program System states of the
driving dynamics, refer to page 83.
Servotronic
The concept
The Servotronic varies the steering force re‐
quired to turn the wheels in accordance with the
vehicle speed. At low speeds, the steering force
is strongly supported, i. e. during steering, low
force is required. As the speed increases, the
assistance of the steering force is reduced.
Programs
Steering force setting options:
▷"Comfort": low.▷"Sport": medium.▷"Sport Plus": high.
Selecting a channel
Via M Drive
1."Settings"2."M Drive 1" or"M Drive 2"3. Select the symbol.4.Select the desired channel.
When M Drive is active, setting is immedi‐
ately applied.
To activate M Drive with the selected settings,
press the corresponding button on the steering
wheel:
▷▷
Using the button
Press button repeatedly until the desired
program is displayed in the instrument
cluster.
Display in the instrument cluster Servotronic with selected program with
activated display of the System states of
the driving dynamics, refer to page 83.
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Driving comfortVehicle equipment
All standard, country-specific and optional
equipment that is offered in the model series is
described in this chapter. Therefore, equipment
is also described that is not available in a vehicle,
e. g., because of the selected optional equip‐
ment or country variant. This also applies for
safety-related functions and systems.
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 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.◀
Controls
At a glance1System on/off, interrupt2Resume speed3Store, maintain/change speed
Switching on Press the button on the steering wheel.
The marking 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 interrupted,
actively intervene by braking and, if necessary,
with evasive maneuvers; otherwise, there is the
danger of an accident occurring.◀
Press the button.
▷If active: press twice.▷If interrupted: press once.
The displays go out. The stored desired speed
is deleted.
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Interrupting the systemWhen active, press the button.
The system is automatically interrupted if:▷The brakes are applied.▷The transmission position D is disengaged.▷MDM is activated or DSC is deactivated.▷DSC is actively controlling stability.
Maintaining/storing the current 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.
It is displayed in the speedometer and briefly
displayed in the instrument cluster, Displays in
the speedometer, refer to page 111.
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 sys‐
tem 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; other‐
wise, there is the danger of an accident occur‐
ring.◀
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 if the road is
clear.
▷Each time the rocker switch is pressed to the
point of resistance, the desired speed in‐
creases 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 maximum of
5 mph/10 km/h.▷Pressing the rocker switch to the resistance
point and holding it there accelerates or de‐
celerates the vehicle without requiring pres‐
sure on the accelerator. After the rocker
switch is released, the vehicle maintains its
final speed. Pressing the switch beyond the
resistance point causes the vehicle to ac‐
celerate more rapidly.
Resuming the desired speed
Press the button.
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 instrument
cluster indicates whether the system is
switched on.
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Desired speed▷The marking lights up in
green: the system is active.▷The marking lights up in or‐
ange: the system has been
interrupted.▷The marking does not light up: the system is
switched off.
Brief status display
Selected desired speed.
If --- appears briefly on the display for Check
Control messages, it is possible that the system
requirements for operation are currently not
met.
PDC Park Distance Control
The concept
In addition to the PDC Park Distance Control, the
backup camera, refer to page 114, can be
switched on.
PDC supports you when parking. Objects that
you are approaching slowly in front of or behind
your vehicle are indicated 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 the 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, e.g.:▷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.Seite 112ControlsDriving comfort112
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