Vehicle care175
FuseCircuitRUN 2Power battery
key on runRUN/CRNKRun crankSDM (BATT)Safety Diag‐
nosis Module
(Battery)SDM (IGN 1)Safety Diag‐
nosis Module
(Ignition)SPARE-S/ROOFSunroofS/ROOF BATTSunroof batterySSPSPower steeringSTR/WHL SWSteering wheelTRLRTrailerTRLR BATTTrailer batteryFuseCircuitXBCMExport Body
Control ModuleXM/HVAC/DLCXM satellite
radio, climate
control, data link
connection
After changing of defective fuses
close the fuse box cover and press
until it engages.
If the fuse box cover is not closed
correctly, malfunctions may occur.
Vehicle tools
Tools
Vehicles with spare wheel
In vehicles with a spare wheel, a jack and vehicle tools kit are available.
The jack and vehicle tools have been
specially developed for your vehicle
and must only be used on that
vehicle. Only use jack for changing
wheels.
The jack and vehicle tools are in a
storage compartment below the floor
cover in the load compartment.
176Vehicle care
To remove the jack and vehicle tools,open the tailgate.
Push both levers on the floor cover
towards the handle and pull up the
cover by the handle.
Where present, hang the hook to the
upper part of the tailgate opening.
Remove wing bolt from the jack by
rotating it anticlockwise and remove
the jack and wheel wrench bag.
Remove straps holding the bag
containing the wheel wrench.
Remove wheel wrench from the bag.
Wheel changing 3 186.
Spare wheel 3 189.
Vehicles with tyre repair kit
In vehicles with a tyre repair kit, there may not be a jack and vehicle tool kit.
The tyre repair kit is in a storage
compartment below the floor cover in the load compartment.
Vehicle care177
To remove the tyre repair kit, open thetailgate and pull the floor cover handle
upwards 3 69.
Caution
Do not allow objects to protrude
above the top of the rear floor
storage compartment, to avoid
damage to the storage area and
the load compartment floor.
Tyre repair kit 3 183.
Wheels and tyres
Tyre 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.
Winter tyres Winter tyres improve driving safety attemperatures below 7 °C and shouldtherefore be fitted on all wheels.
Tyres of size 215/70 R 16 are
recommended as winter tyres.
In accordance with country-specific
regulations, affix the speed sticker in
the driver's field of view.
If winter tyres are installed that have
not been approved for your vehicle,
Electronic Stability Control (ESC)
system performance may be affected3 139. Seek the assistance of a
workshop regarding availability of
approved winter tyres.
If winter tyres are in use, the
temporary spare wheel may still be
fitted with a summer tyre. Vehicle
driveability could be affected,
especially on slippery road surfaces.
Spare wheel 3 189.
Tyre designations E.g. 235/65 R 17 104 H235=Tyre width, in mm65=Cross-section ratio (tyre height
to tyre width), %R=Belt type: RadialRF=Type: RunFlat17=Wheel diameter, in inches104=Load index e.g. 91 is
equivalent to 618 kgH=Speed code letter
Speed code letter:
Q=up to 100 mphS=up to 112 mphT=up to 118 mphH=up to 130 mph
178Vehicle care
V=up to 150 mphW=up to 168 mph
Tyre pressureCheck 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.
Use the valve cap key to make
unscrewing the valve caps easier.
The valve cap key is located on the
inside of the tank flap.
Tyre pressure 3 210.
The tyre pressure data refers to cold
tyres. It applies to summer and winter tyres.
Always inflate the spare tyre to the
pressure specified for full load.
The ECO tyre pressure serves to
achieve the smallest amount of fuel
consumption possible.
Incorrect tyre pressures will impair
safety, vehicle handling, comfort and
fuel economy and will increase tyre
wear.
Tyre pressures differ depending on
various options. For the correct tyre
pressure value, follow the procedure
below:
1. Identify the engine identifier code.
Engine data 3 205.
2. Identify the respective tyre.
The tyre pressure tables show all
possible tyre combinations 3 210.
For the tyres approved for your
vehicle, refer to the EEC Certificate of Conformity provided with your vehicle
or other national registration
documents.
The driver is responsible for correct
adjustment of tyre pressure.9 Warning
If the pressure is too low, this can
result in considerable tyre warm-
up and internal damage, leading to tread separation and even to tyre
blow-out at high speeds.
If the tyre pressure must be reduced
or increased on a vehicle with tyre
pressure monitoring system, switch
off ignition.
Tyre pressure monitoring system The tyre pressure monitoring system
checks the pressure of all four wheels
once per minute when vehicle speed
exceeds a certain limit.Caution
Tyre pressure monitoring system
warns only about low tyre pressure
condition and does not replace
regular tyre maintenance by the
driver.
All wheels must be equipped with pressure sensors and the tyres must
have the prescribed pressure. If
wheels without sensors are mounted,
the tyre pressure monitoring system
is not operational.
Vehicle care179
Notice
In countries where the tyre pressure
monitoring system is legally
required, the use of wheels without
pressure sensors will invalidate the
vehicle type approval.
The TPMS sensors monitor the air
pressure in the tyres and transmit tyre pressure readings to a receiver
located in the vehicle.
Each tyre, including the spare, should be checked monthly when cold and
inflated to the recommended inflation
pressure 3 210.
Low tyre pressure conditionA detected low tyre pressure
condition is indicated by control
indicator w 3 89.
If w illuminates, stop as soon as
possible and inflate the tyres as
recommended 3 210.
When the system detects a
malfunction, w will flash for approx.
one minute and then remain
continuously illuminated. This
sequence will continue upon
subsequent vehicle start-ups as long as the malfunction exists.
When w is illuminated, the system
may not be able to detect or signal low tyre pressure as intended.Tyre pressures in Info-Display
The current tyre pressures can be
shown in the menu item Tyres in the
Board Computer menu. Press the
BC button on the Infotainment system
and select the menu item.
The tyre pressure monitoring system
automatically detects the vehicle
load. A corresponding message may appear on the Info-Display if
inconsistent tyre pressures are
detected. In some versions, the
message is displayed in abbreviated
form.
180Vehicle care
For example, the following messagescan be displayed:
A graphic indicating the left rear tyre
is shown together with the current tyre
pressure; slight pressure deviation.
Reduce speed. Check tyre pressure
at next opportunity with an
appropriate gauge and correct if
necessary.
On the Colour-Info-Display, this
message will appear in yellow.
A graphic indicating the front left tyre is shown together with the current tyre
pressure; significant pressure
deviation or direct pressure loss.
Steer out of the flow of traffic as
quickly as possible without
endangering other vehicles. Stop and check the tyres. Mount the spare
wheel if necessary 3 186.
On the Colour-Info-Display, this
message will appear in red.
Acknowledgement of warnings 3 92,
3 95.
Vehicle messages 3 100.
If the tyre pressure is to be reduced or
increased, switch off the ignition. Tyre
pressures 3 178, 3 210.
Temperature dependency Tyre pressure depends on the
temperature of the tyre. During
driving, tyre temperature and
pressure increase.
The tyre pressure value shown in the Info-Display is the actual tyre
pressure. Therefore it is important to
check tyre pressure with cold tyres.
General information
The use of commercially available
liquid tyre repair kits can impair the
function of the system. Factory-
approved tyre repair kits can be used.
Tyre repair kit 3 183.
External high-power radio equipment
could disrupt the TPMS.
The tyre pressure monitoring system
valve cores and sealing rings must be
replaced each time the tyres are
changed.
Vehicle care181
TPMS sensor matching process
Each TPMS sensor has a unique
identification code. The identification
code must be matched to a new tyre/ wheel position after rotating the tyres
or replacing one or more of the TPMS
sensors.
The TPMS sensor matching process
should also be performed after
replacing a spare tyre with a road tyre containing a TPMS sensor. The
control indicator w and the warning
message should extinguish at the
next ignition cycle.
The sensors are matched to the tyre/
wheel positions, using a TPMS
relearn tool, in the following order:
■ left front tyre
■ right front tyre
■ right rear tyre
■ left rear tyre
Consult your workshop for service or
to purchase a relearn tool.
There are two minutes to match the
first tyre/wheel position, and
five minutes overall to match all fourtyre/wheel positions. If it takes longer,
the matching process stops and must be restarted.
The TPMS sensor matching process
is as follows:
1. Apply the electrical parking brake 3 137 ; on vehicles with automatic
transmission move the selector
lever to position P.
2. Turn the ignition on 3 124.
3. Initiate the TPMS Learn Mode by simultaneously pressing buttons
p and q on the radio remote
control,
- or -
Press the INFO button on the
Infotainment system until a tyre
learn message appears on the
Info-display. Press and hold the
OK button.
The horn sounds twice and the left front turn signal also illuminates
as confirmation that Learn Mode
has been enabled.
4. Start with the left front tyre.5. Place the relearn tool against the tyre sidewall, near the valve stem.Then press the button to activatethe TPMS sensor. A horn chirp
confirms that the sensor
identification code has been
matched to this tyre and wheel
position. The next relevant turn
signal illuminates.
6. Proceed to the right front tyre, and
repeat the procedure in Step 5.
7. Proceed to the right rear tyre, and
repeat the procedure in Step 5.
8. Proceed to the left rear tyre, and repeat the procedure in Step 5.
The horn sounds twice to indicate
the sensor identification code has been matched, and the TPMS
sensor matching process is no
longer active.
9. Turn off the ignition.
10. Set all four tyres to the recommended inflation pressure
3 210.
182Vehicle careTread depth
Check tread depth at regular
intervals.
Tyres should be replaced for safety
reasons at a tread depth of 2-3 mm
(4 mm for winter tyres).
For safety reasons it is recommended that the tread depth of the tyres on
one axle should not vary by more than
2 mm.
The legally permissible minimum
tread depth (1.6 mm) has been
reached when the tread has worn
down as far as one of the tread wear
indicators (TWI). Their position is
indicated by markings on the
sidewall.
If there is more wear at the front than
the rear, swap round front wheels and rear wheels. Ensure that the direction
of rotation of the wheels is the same
as before.
Tyres age, even if they are not used.
We recommend tyre replacement
every 6 years.
Changing tyre and wheel
size
If tyres of a different size than those
fitted at the factory are used, it may be necessary to reprogramme the
speedometer as well as the nominal tyre pressure and make other vehicle modifications.
After converting to a different tyre
size, have the label with tyre
pressures replaced.9 Warning
Use of unsuitable tyres or wheels
may lead to accidents and will
invalidate the vehicle type
approval.
If wheel rims of a different type are to
be installed, the wheel nuts may also
need to be changed. We recommend you consult a workshop.
Wheel covers Wheel covers and tyres that are
factory approved for the respective
vehicle and comply with all of the
relevant wheel and tyre combination
requirements must be used.
If the wheel covers and tyres used are
not factory approved, the tyres must
not have a rim protection ridge.
Wheel covers must not impair brake
cooling.