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140Driving and operatingSpeed limiterThe speed limiter prevents the
vehicle 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 Driver Information Centre when
the system is active.
ActivationPress button L. If cruise control has
been activated before, it is switched
off when speed limiter is activated
and the control indicator m
extinguishes.
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
Driver Information Centre.
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 Driver Information
Centre.
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
Driver Information Centre and a
chime sounds during this period.
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Driving and operating141
Release the accelerator pedal and
the 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.
Additionally, a corresponding
message appears on the Uplevel-
Display.
Resume limit speed Turn 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 by switching off the
ignition, speed limiter is also
deactivated and the stored speed is
deleted.Parking assist
Rear parking assist9 Warning
It is the driver who bears full
responsibility for the parking
manoeuvre.
Always check the surrounding
area while reversing and using the rear parking assist system.
The rear parking assist makes
parking easier by measuring the
distance between the vehicle and
rear obstacles. It informs and warns
the driver by giving acoustic and
visual signals.
The system has four ultrasonic
parking sensors in the rear bumper.
Activation
When reverse gear is engaged, the
system is ready to operate
automatically.
An illuminated LED in the parking
assist button r indicates that the
system is ready to operate.
Indication
The system warns the driver with
acoustic signals against potentially
hazardous obstacles behind the
vehicle in a distance range up to
1.5 metres. The interval between the
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Driving and operating147
When a slot is detected, a visual
feedback in the Driver Information
Centre and an acoustic signal is
given.
Select parallel or perpendicular
parking slot by tapping the icon 6 or
7 on the Colour-Info-Display.
When a slot is detected, a visual
feedback on the Colour-Info-Display
and an acoustic signal is given.
If the driver does not stop the vehicle
within 10 metres for parallel parking
slots or 6 metres for perpendicular
parking slots after a parking slot is
proposed, the system starts to search
for another suitable parking slot.
Park guiding mode
The parking slot suggestion of the system is accepted when the vehicle
is stopped by the driver within
10 metres for parallel parking slots or
6 metres for perpendicular parkingslots after the Stop message is given.
The system calculates the optimal
path into the parking slot.
A brief vibration in the steering wheel
after engaging reverse gear indicates
that the steering is controlled by the
system. Then the vehicle is steered
into the slot automatically by giving
the driver detailed instructions for
braking, accelerating and gear
shifting. The driver must keep hands
away from the steering wheel.
Always pay attention to the sound of
the front-rear parking assist.
Continuous sound indicates that the
distance to an obstacle is less than
approx. 30 cm.
If, for any reason, the driver must take over control of the steering, hold the
steering wheel only at the outer edge. Automatic steering is cancelled in thisevent.Changing the parking side
The system is configured to detect
parking slots by default on the
passenger side. To detect parking
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148Driving and operating
slots on the driver side, switch on turn
signal indicator to the driver side for
the durance of the search.
As soon as the turn signal indicator is switched off, the system searches for
parking slots on the passenger side again.Display indication
The instructions in the display show:
■ general hints and warning messages,
■ a hint when driving faster than 18 mph during parking slot
searching mode, or 5 mph in
guiding mode,
■ the demand to stop the vehicle, when a parking slot is detected,
■ the direction of driving during the parking manoeuvre,
■ the demand to gearshift rearwards or forwards,
■ the demand to accelerate or brake,
■ for some of the instructions a progress bar is shown in the DriverInformation Centre,■ the successful parking indicated by
a pop-up symbol and a chime,
■ the cancelling of a parking manoeuvre.
Display priorities
Advanced parking assist indication on
the Driver Information Centre can be
inhibited by vehicle messages with a higher priority. After approving the
message by pressing the SET/CLR
button on the turn signal lever,
advanced parking assist instructions
appear again and the parking
manoeuvre can be continued.
Deactivation
The system is deactivated by:
■ a long press of button D,
■ parking manoeuvre successfully ended,
■ driving faster than 18 mph during parking slot search,
■ driving faster than 5 mph during parking guidance,
■ driver interference on steering wheel detected,■ exceeding number of maximum gear changes: 8 parking cycles
when parallel parking or 5 cycles
when perpendicular parking,
■ switching off the ignition.
Deactivation by the driver or by the
system during manoeuvring will be
indicated by Parking Deactivated on
the display. Additionally an acoustic
signal sounds.
Fault
A message appears when:
■ there is a fault in the system; control
indicator r illuminates in the
instrument cluster,
■ the driver did not successfully complete the parking manoeuvre,
■ the system is not operational,
■ any of the deactivation reasons described above apply.
If an object is detected during parking
instructions, Stop is indicated on the
display. Removing the object will
resume the parking manoeuvre. If the
object is not removed, the system will
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158Vehicle careVehicle careGeneral Information...................158
Vehicle checks ........................... 159
Bulb replacement .......................165
Electrical system ........................174
Vehicle tools .............................. 179
Wheels and tyres .......................181
Jump starting ............................. 199
Towing ....................................... 200
Appearance care .......................203General Information
Accessories and vehicle
modifications
We recommend the use of genuine parts and accessories and factory
approved parts specific for your
vehicle type. We cannot assess or
guarantee reliability of other products
- even if they have a regulatory or
otherwise granted approval.
Do not make any modifications to the electrical system, e.g. changes of
electronic control units (chip tuning).Caution
When transporting the vehicle on
a train or on a recovery vehicle, the
mud flaps might be damaged.
Vehicle storage
Storage for a long period of time
If the vehicle is to be stored for several months:
■ Wash and wax the vehicle.
■ Have the wax in the engine compartment and underbody
checked.
■ Clean and preserve the rubber seals.
■ Fill up fuel tank completely.
■ Change the engine oil.
■ Drain the washer fluid reservoir.
■ Check the coolant antifreeze and corrosion protection.
■ Adjust tyre pressure to the value specified for full load.
■ Park the vehicle in a dry, well ventilated place. Engage first orreverse gear. Prevent the vehiclefrom rolling.
■ Do not apply the parking brake.
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178Vehicle care
No.Circuit1–2–3Power windows4Voltage transformer5Body control module 16Body control module 27Body control module 38Body control module 49Body control module 510Body control module 611Body control module 712Body control module 813–14Tailgate15Diagnostic connector16Data link connection17IgnitionNo.Circuit18Air conditioning system19Audio amplifier20Parking assist21Brake switch22Audio system23Display24–25Onstar26Instrument panel27Seat heating, driver28–29–30Instrument panel31Horn32Seat heating, passenger33Heated steering wheel34–
Page 182 of 233
180Vehicle care
On version with storage box, the
suitcase with the tools, the towing eye
and the tyre repair kit is located in a
chamber of the box in the load
compartment 3 65.On version with subwoofer box, the
tools and the towing eye are located
together with the tyre repair kit and
the warning triangle in the box below
the floor cover. To gain access,
remove floor cover: fold rear part to
the front and pull out the cover to the
rear 3 67.
Vehicles with spare wheel
The jack, the wheel bolt wrench, the
tools and two straps for securing a
damaged wheel are in the tool box below the load compartment floor
cover 3 67.
Page 183 of 233

Vehicle care181Wheels and tyresTyre condition, wheel condition
Drive over edges slowly and at right
angles if possible. Driving over sharp
edges can cause tyre and wheel
damage. Do not trap tyres on the kerb
when parking.
Regularly check the wheels for
damage. Seek the assistance of a
workshop in the event of damage or
unusual wear.
We recommend not swapping the
front wheels with the rear wheels and vice versa, as this can affect vehicle
stability. Always use less worn tyres
on the rear axle.
Winter tyres Winter tyres improve driving safety attemperatures below 7 °C and shouldtherefore be fitted on all wheels.
All tyre sizes are permitted as winter
tyres 3 221.
Tyre size 185/60 R 15 is only
permitted as winter tyre.In accordance with country-specific
regulations, affix the speed sticker in
the driver's field of view.
Tyre designations E.g. 195/55 R 16 95 H195=tyre width, mm55=cross-section ratio (tyre height
to tyre width), %R=belt type: RadialRF=type: RunFlat16=wheel diameter, inches95=load index e.g. 95 is equivalent
to 690 kgH=speed code letter
Speed code letter:
Q=up to 100 mphS=up to 112 mphT=up to 118 mphH=up to 130 mphV=up to 150 mphW=up to 168 mphDirectional tyres
Directional tyres must be mounted so that they rotate in the correct
direction. The proper rotation
direction is indicated by a symbol
(e.g. an arrow) on the sidewall.
Tyre pressure
Check the pressure of cold tyres at least every 14 days and before any
long journey. Do not forget the spare
wheel.
This also applies to vehicles with tyre pressure monitoring system.
Unscrew the valve cap.