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Driving and operating1359Warning
Do not let this special safety
feature tempt you into taking risks
when driving.
Adapt speed to the road
conditions.
Control indicator b 3 87.
Deactivation
TC can be switched off when spinning of drive wheels is required:
press t briefly to deactivate TC, k
illuminates. Deactivation is displayed
as status message in the Driver
Information Centre.
TC is reactivated by pressing t again.
TC is also reactivated the next time
the ignition is switched on.
Electronic Stability Control
Electronic Stability Control (ESC)
improves driving stability when
necessary, regardless of the type of
road surface or tyre grip. It also
prevents the drive wheels from
spinning.
As soon as the vehicle starts to
swerve (understeer/oversteer),
engine output is reduced and the wheels are braked individually. This
considerably improves the driving
stability of the vehicle on slippery road surfaces.
ESC is operational after each engine start as soon as the control indicator
b extinguishes.
When ESC operates b flashes.9 Warning
Do not let this special safety
feature tempt you into taking risks
when driving.
Adapt speed to the road
conditions.
Control indicator b 3 87.
Deactivation
For very high-performance driving
ESC can be deactivated: hold t
depressed for approx. 5 seconds.
Control indicator k and n illuminate.
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136Driving and operating
ESC is reactivated by pressing t
again. If the TC system was
previously disabled, both TC and
ESC are reactivated.
ESC is also reactivated the next time
the ignition is switched on.
Descent control system The Descent control system (DCS)
allows the vehicle to travel at a low
speed without depressing the foot
brake. The vehicle will automatically
decelerate to a low speed and remain
at that speed when the system is
activated. Some noise or vibration
from the brake system may be
apparent when the system is active.Caution
Use only when descending steep
grades while driving off-road. Do
not use when driving on normal
road surfaces. Unnecessary
usage of the DCS function, such
as while driving on normal roads,
may damage the brake system
and the ESC function.
Switching on
At speeds below approx. 25 mph,
press button u. DCS is operational as
soon as control indicator u
illuminates.
Activation
DCS is active at speeds between 1.2 and 22 mph. Depending on the
current speed, the vehicle will be
accelerated or decelerated to a speed
between 3 and 12 mph. When DCS is active, u flashes.
DCS will only be activated on roads with a certain incline.
Deactivation
DCS is deactivated if the vehicle is
decelerated below 1.2 mph or
accelerated above 22 mph.
Switching off
Press button u again. Control
indicator u extinguishes.
At speeds above 37 mph the system
is deactivated automatically.
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Driving and operating137Driver assistance
systems9 Warning
Driver assistance systems are
developed to support the driver
and not to replace the driver's
attention.
The driver accepts full
responsibility when driving the
vehicle.
When using driver assistance
systems, always take care
regarding the current traffic
situation.
Cruise control
The Cruise control can store and
maintain speeds of approx. 20 to
120 mph. Deviations from the stored
speeds may occur when driving uphill or downhill.
For safety reasons, the cruise controlcannot be activated until the foot
brake has been operated once.
Activating in first gear is not possible.
Do not use the cruise control if it is not advisable to maintain a constant
speed.
With automatic transmission, only
activate cruise control in automatic
mode.
Control indicator m 3 89.
Switching on
Press m: control indicator m in
instrument cluster illuminates white.
Activation
Accelerate to the desired speed and
turn thumb wheel to SET/-: the
current speed is stored and
maintained. Control indicator m in
instrument cluster illuminates green. Accelerator pedal can be released.
Vehicle speed can be increased by depressing the accelerator pedal.
When the accelerator pedal is
released, the previously stored speed
is resumed.
Cruise control remains activated
while gearshifting.
Increase speed With cruise control active, hold thumb
wheel turned to RES/+ or briefly turn
to RES/+ repeatedly: speed
increases continuously or in small
increments.
Alternatively accelerate to the desired speed and store by turning to SET/-.
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138Driving and operating
Reduce speedWith cruise control active, hold thumb
wheel turned to SET/- or briefly turn to
SET/- repeatedly: speed decreases
continuously or in small increments.
Deactivation
Press y: control indicator m in
instrument cluster illuminates white.
Cruise control is deactivated. Last
stored speed remains in memory for
later speed resume.
Automatic deactivation: ■ Vehicle speed is below approx. 20 mph.
■ Vehicle speed is above approx. 125 mph.
■ The brake pedal is depressed.
■ The clutch pedal is depressed for a
few seconds.
■ Selector lever is in N.
■ Engine speed is in a very low range.
■ The Traction Control system (TC) or Electronic Stability Control
(ESC) is operating.Resume stored speed
Turn thumb wheel to RES/+ at a
speed above 20 mph. The stored
speed will be resumed.
Switching off
Press m: control indicator m in
instrument cluster extinguishes. The
stored speed is deleted.
Pressing L for activating speed
limiter or switching off the ignition also switches off cruise control and
deletes the stored speed.
Speed limiter The speed limiter prevents thevehicle exceeding a preset maximum
speed.
The maximum speed can be set at a
speed above 15 mph.
The driver can only accelerate up to
the preset speed. Deviations from the
limited speed may occur when driving downhill.The preset speed limit is displayed in
the top line of the Driver Information
Centre (DIC) when the system is
active.
Activation
Press L. If cruise control or adaptive
cruise control has been activated
before, it is switched off when speed
limiter is activated and control
indicator m extinguishes.
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Driving and operating139
Set speed limit
With speed limiter active, hold thumb
wheel turned to RES/+ or briefly turn
to RES/+ repeatedly until the desired
maximum speed is displayed in the
DIC.
Alternatively accelerate to the desired speed and briefly turn thumb wheel to SET/- : the current speed is stored as
maximum speed. Speed limit is
displayed in the DIC.Change speed limit
With speed limiter active, turn thumb
wheel to RES/+ to increase or SET/-
to decrease the desired maximum
speed.
Exceeding the speed limit
In the event of an emergency, it is possible to exceed the speed limit by
depressing the accelerator pedal
firmly beyond the point of resistance.
The limited speed will flash in the DIC and a chime sounds during this
period.
Release the accelerator pedal and the speed limiter function is
reactivated once a speed lower than
the limit speed is obtained.
Deactivation Press y: speed limiter is deactivated
and the vehicle can be driven without
speed limit.
The limited speed is stored and a
corresponding message appears in
the DIC.Resume limit speed
Turn thumb wheel to RES/+. The
stored speed limit will be obtained.
Switching off Press L, the speed limit indication in
the DIC extinguishes. The stored
speed is deleted.
By pressing m to activate cruise
control or adaptive cruise control or
by switching off the ignition, speed
limiter is also deactivated and the
stored speed is deleted.
Forward collision alert
The forward collision alert can help to
avoid or reduce the damage caused
by front-end crashes. If a vehicle
directly ahead is approached too
quickly, a warning chime and alert in
the Driver Information Centre (DIC) is
provided.
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140Driving and operating
The green illuminated vehicle ahead
symbol A appears in the
speedometer when the system has
detected a vehicle in the driving path. A precondition is that forward collision
alert is activated in the vehicle
personalisation menu 3 100 or that it
is not deactivated by pressing V
(depending on the system, see
following).
Forward collision alert based on
front camera system
Forward collision alert uses the front
camera system in the windscreen to
detect a vehicle directly ahead, in
your path, within a distance of approx.
60 metres.
Activation
Forward collision alert operates
automatically above 25 mph, if it is not deactivated by pressing V, see
below.
Selecting the alert sensitivity
The alert sensitivity can be set to
near, medium or far.
Press V: the current setting is shown
on the DIC. Press V again to change
the alert sensitivity.
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Driving and operating141
Alerting the driver
When approaching another vehicle
too rapidly, the collision alert warning page will be indicated in the DIC.
Simultaneously a warning chime
sounds. Depress the brake pedal, if it
is required by the situation.
Deactivation
The system can be deactivated.
Press V repeatedly until the following
message appears in the DIC.
General information
9 Warning
Forward collision alert is just a
warning system and does not
apply the brakes. When
approaching a vehicle ahead too
rapidly, it may not provide you
enough time to avoid a collision.
The driver accepts full
responsibility for the appropriate
following distance based on traffic, weather and visibility conditions.
The complete attention of the
driver is always required while
driving. The driver must always be
ready to take action and apply the
brakes.
System limitations
The system is designed to warn only for vehicles, but may react also to
other metallic objects.
In the following cases, forward
collision alert may not detect a vehicle ahead or sensor performance is
limited:
■ on winding roads
■ when weather limits visibility, e.g. fog, rain, or snow
■ when the sensor is blocked by snow, ice, slush, mud, dirt, or
windscreen damage
Page 144 of 229

142Driving and operatingParking assist
The parking assist makes parking
easier by measuring the distance between the vehicle and obstacles,
and giving acoustic signals. It is the
driver, however, who bears full
responsibility for the parking
manoeuvre.
The system consists of four ultrasonic parking sensors in the rear bumper. If
the vehicle is equipped with a front
parking assist the system consists of
four additional ultrasonic parking
sensors in the front bumper.
Control indicator r 3 86.
Activation
When reverse gear is engaged, the
system is activated automatically.
The front parking assist can also be activated at a low speed by pressing
r .
An illuminated LED in the parking
assist button indicates that the
system is ready to operate.
An obstacle is indicated by a buzzing
sound. The interval between the sounds becomes shorter as the
vehicle gets closer to the obstacle.
When the distance is less than
30 cm, the buzzing is continuous.
If r is pressed once within an
ignition cycle, the front parking assist
is reactivated if the vehicle speed
goes below a certain value and if the
vehicle speed has not exceeded
16 mph beforehand.
Deactivation
Deactivate the system by pressing
r .
The LED in the button will go out and
Park Assist Off will be displayed in the
Driver Information Centre (DIC).
The system is deactivated
automatically at a certain speed.
Fault
In the event of a fault in the system,
r illuminates or a vehicle message
is displayed in the DIC.
Additionally, r illuminates or a
vehicle message is displayed in the
DIC if a malfunction of the system due
to temporary conditions, e.g. snow
covered sensors is detected.