
30Keys, doors and windows
1. Close tailgate, bonnet, windowsand sunroof.
2. Press button o. LED in the
button o illuminates for a
maximum of 10 minutes.
3. Close doors.
4. Activate the anti-theft alarm system.
Status message is displayed in the
Driver Information Centre.
Status LED
Status LED is integrated in the sensor
on top of the instrument panel.
Status during the first 30 seconds of
anti-theft alarm system activation:LED illu‐
minates=test, arming delay.LED
flashes
quickly=doors, tailgate or
bonnet not completely
closed, or system fault.
Status after system is armed:
LED flashes
slowly=system is armed.
Seek the assistance of a workshop in the event of faults.
Deactivation
Unlocking the vehicle deactivates the
anti-theft alarm system.
AlarmWhen triggered, the alarm sounds via
a separate battery-backed power
sounder, and the hazard warning
lights flash simultaneously. The
number and duration of alarm signals are stipulated by legislation.
The alarm can be silenced by
pressing any button on the radio
remote control or by switching on the
ignition.
The anti-theft alarm system can be
deactivated only by pressing button
c or by switching on the ignition.
A triggered alarm, which has not been interrupted by the driver, will be
indicated by the hazard warning
lights. They will flash quickly three
times the next time the vehicle is
unlocked with the radio remote
control. Additionally a warning
message or a warning code is
displayed in the Driver Information
Centre after switching on the ignition.
Vehicle messages 3 126.
If the vehicle's battery is to be
disconnected (e.g. for maintenance
work), the alarm siren must be
deactivated as follows: switch the
ignition on then off, then disconnect
the vehicle's battery within
15 seconds.

116Instruments and controlsUpshift[ illuminates green as control
indicator, or is shown as a symbol in
the Driver Information Centre with
Uplevel-Display or Uplevel-Combi-
Display, when upshifting is
recommended for fuel saving
reasons.
On some versions gear shift
indication is popped up as full page in
the Driver Information Centre.
EcoFlex drive assistant 3 130.
Power steering c illuminates yellow.
Illuminates with power steering
reduced Power steering is reduced due to
overheating of the system. Control
indicator extinguishes when the
system has cooled down.
Stop-start system 3 163.Illuminates with power steering
disabled Failure in the power steering system.
Consult a workshop.
Lane departure warning ) illuminates green or flashes yellow.
Illuminates green
System is switched on and ready to operate.
Flashes yellow
System recognises an unintended
lane change.
Ultrasonic parking assist
r illuminates yellow.
Fault in system
or
Fault due to sensors that are dirty or
covered by ice or snow
orInterference due to external sources of ultrasound. Once the source ofinterference is removed, the system
will operate normally.
Have the cause of the fault in the
system remedied by a workshop.
Ultrasonic parking assist 3 195.
Electronic Stability Control off n illuminates yellow.
The system is deactivated.
Electronic Stability Control
and Traction Control
system
b illuminates or flashes yellow.
Illuminates
A fault in the system is present.
Continued driving is possible. Driving
stability, however, may deteriorate
depending on road surface
conditions.

Lighting141
Dynamic automatic headlight
levelling 3 141.
Headlights when driving
abroad
The asymmetrical headlight beam
extends visibility at the edge of the
road at the passenger side.
However, when driving in countries
where traffic drives on the opposite
side of the road, adjust the headlights
to prevent dazzling of oncoming
traffic.
Vehicles with halogen headlight
system The headlights do not have to be
adjusted.Vehicles with Xenon headlight
system
1. Key in ignition switch.
2. Pull turn signal lever and hold (headlight flash).
3. Switch on ignition.
4. After approx. 5 seconds the control indicator f starts flashing
and an acoustic signal sounds.
Control indicator f 3 118.
Every time the ignition is switched on,
f flashes as a reminder for approx. 4
seconds.
For deactivation operate the same
procedure as described above. f will
not flash when function is
deactivated.
Daytime running lights
Daytime running lights increase
visibility of the vehicle during daylight.
They are switched on automatically
when ignition is on.
If the vehicle is equipped with
automatic light control function, the
system switches between daytime running light and low/high beam
automatically depending on the
lighting conditions and information
given by the rain sensor system.
Automatic light control 3 139.
Adaptive forward lighting
The Adaptive forward lighting
functions are only available with Bi-
Xenon headlights. Light range, light
distribution and intensity of light are
variably triggered depending on the
light conditions, weather and road
type.

182Driving and operating
The limited speed will flash in the
Driver Information Centre and,
depending on the vehicle, additionally
a chime sounds during this period.
Release the accelerator pedal andthe speed limiter function is
reactivated once a speed lower than
the limit speed is obtained.
Deactivation
Press button 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 Driver Information Centre.
Resume limit speedTurn thumb wheel to RES/+. The
stored speed limit will be obtained.
Switching off
Press button L, the speed limit
indication in the Driver Information Centre extinguishes. The stored
speed is deleted.By pressing button 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.
Adaptive cruise control
Adaptive cruise control is an
enhancement to traditional cruise
control with the additional feature of
maintaining a certain distance behind the vehicle ahead.
Adaptive cruise control automatically
decelerates the vehicle when
approaching a slower moving vehicle.
It then adjusts the vehicle speed to
follow the vehicle ahead at the
selected following distance. The
vehicle speed increases or decreases to follow the vehicle in front, but will
not exceed the set speed. It may
apply limited braking with activated
brake lights.
The adaptive cruise control can store and maintain speeds over approx.
31 mph and brakes automatically to
follow a slower vehicle driving ahead
to a minimum speed of 18 mph.
Adaptive cruise control uses a radar
sensor to detect the vehicles ahead.
If no vehicle is detected in the driving path, the adaptive cruise control will
behave like a traditional cruise
control.
For safety reasons, the system
cannot be activated before the brake
pedal has been depressed once
since switching on ignition. Activation
in first gear is not possible.
Adaptive cruise control is mainly
advised to be used on long straight
roads, e.g. highways or country roads
with steady traffic. Do not use the system if it is not advisable to
maintain a constant speed.
Control indicator A 3 119, m 3 119.

190Driving and operating
Press button E; the current setting is
shown on the Driver Information
Centre. Press button E again to
change the alert sensitivity. The
setting is also displayed in the top line
of the Driver Information Centre.Note that the alert timing sensitivity
setting is shared with the following distance setting of the adaptive cruise control. So changing the alert timing
sensitivity changes the adaptive
cruise control following distance
setting.
Alerting the driver
A green illuminated vehicle ahead
control indicator A lights up in the
instrument cluster when the system has detected a vehicle in the driving
path. When the distance to a
preceding moving vehicle gets too
small or when approaching another
vehicle too rapidly and a collision is
imminent, the collision alert symbol
pops up in the Driver Information
Centre. Simultaneously a warning
chime sounds.
Depress the brake pedal, if it is
required by the situation.

Driving and operating191
SettingsSettings can be changed in the Auto
collision preparation menu in the
vehicle personalisation 3 132.
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 button V, see below.
Selecting the alert sensitivity
The alert sensitivity can be set to
near, medium or far.
Press button V; the current setting is
shown on the Driver Information
Centre. Press button V again to
change the alert sensitivity.
Alerting the driver
A green illuminated vehicle ahead
control indicator A lights up in the
instrument cluster when the system has detected a vehicle in the driving
path.
When the distance to a preceding
moving vehicle gets too small or when
approaching another vehicle too
rapidly and a collision is imminent, the
collision alert symbol pops up in the
Driver Information Centre.
Simultaneously a warning chime
sounds. Depress the brake pedal, if it is required by the situation.

Driving and operating195Parking 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.
The system uses two different
frequencies for the front and rear
sensors, respectively, each with a
different sound.
Control indicator r 3 116.
Button r or D
Parking assist will be activated and
deactivated by pressing the parking
assist button r. If the vehicle is
additionally equipped with advanced
parking assist 3 198 parking assist is
equipped with button D. In this case
both systems will be operated by
button D.
For activating or deactivating parking
assist push button r or D once
briefly. For activating or deactivating
advanced parking assist push button
r or D for approx. one second.
If one system is active, it can be
switched between both systems by
pushing the button shorter or longer.
Activation
When reverse gear is engaged, the
system is activated automatically.

196Driving and operating
The front parking assist can also be
activated at a low speed by pressing
the parking assist button r or D
briefly.
An illuminated LED in the parking
assist button indicates that the
system is ready to operate.
Indication The system warns the driver withacoustic signals against handicaps in
front of or behind the vehicle.
Depending on which of the sensors
are closer to an obstacle, you will hear a buzzing sound of the respective
sensors. 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.
Additionally the distance to obstacles
can be shown in the Driver
Information Centre 3 119.
On version with Uplevel-Display, the
distance to a front obstacle is
indicated by changing segments.
On version with Uplevel-Combi-
Display, the distance to a front and
rear obstacle is indicated by changing distance lines around the vehicle.
The distance indication in the display
can be inhibited by vehicle messages
with a higher priority. Once the
distance indication was overwritten by a vehicle message, distance is no
more indicated until parking assist is
activated again.
Deactivation
Deactivate the system by pressing
the parking assist button r or D
briefly.
The LED in the button extinguishes
and Park Assist Off will be displayed
in the Driver Information Centre.
The system is deactivated
automatically when exceeding a
certain speed.
If the r or D button is pressed
once within an ignition cycle, the front
parking assist is always reactivated
when the vehicle speed goes below a certain value.