198Vehicle care
Temperature dependencyTyre pressure depends on the
temperature of the tyre. During
driving, tyre temperature and
pressure increase.
The tyre pressure value displayed in
the Driver Information Centre shows
the actual tyre pressure. Therefore it
is important to check tyre pressure
with cold tyres.
Tread 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 periodically. Ensure that
the direction of rotation of the wheels
remains the same.
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.
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.
Vehicle care199
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.9 Warning
Use of unsuitable tyres or wheel
covers could lead to sudden
pressure loss and thereby
accidents.
Steel wheels: When using locking
wheel bolts, do not attach wheel
covers.
Tyre chains
Tyre chains are only permitted on the
front wheels.
Always use fine mesh chains that add no more than 10 mm to the tyre tread
and the inboard sides (including chain lock).
9 Warning
Damage may lead to tyre blowout.
Tyre chains are only permitted on
tyres of size 195/65 R15,
205/55 R16 and 225/45 R17.
Tyre chains are not permitted on tyres of size 225/40 R18.
The use of tyre chains is not permitted on the temporary spare wheel.
Tyre repair kit
Minor damage to the tyre tread can be
repaired with the tyre repair kit.
Do not remove foreign bodies from
the tyres.
Tyre damage exceeding 4 mm or that
is at the tyre's sidewall near the rim
cannot be repaired with the tyre repair kit.9 Warning
Do not drive faster than 50 mph.
Do not use for a lengthy period.
Steering and handling may be
affected.
If you have a flat tyre:
Apply the parking brake and engage
first gear, reverse gear or P.
208Vehicle care
Front arm position of the lifting
platform at the underbody.
Spare wheel Some vehicles are equipped with a
tyre repair kit instead of a spare
wheel.
If mounting a spare wheel, which is
different from the other wheels, this
wheel might be classified as a
temporary spare wheel and the
corresponding speed limits apply,
even though no label indicates this.
Seek the assistance of a workshop to
check the applicable speed limit.
The spare wheel has a steel rim.
The use of a spare wheel that is
smaller than the other wheels or in
combination with winter tyres could
affect driveability. Have the defective
tyre replaced as soon as possible.
The spare wheel is located in the load
compartment beneath the floor
covering. It is secured with a wing nut.
The spare wheel well is not designed for all permissible tyre sizes. If a
wheel wider than the spare wheel has
to be stowed in the load
compartment, it must be secured with a strap or, depending on the version,
with an extension bar.
Storing a replaced wheel in the
load compartment using a strap
Use the strap placed in the tool box.
Vehicle tools 3 192.
■ Position the wheel on the load compartment floor close to one
sidewall of the load compartment.
■ Place the loop end of the strap through the front lashing eye of the
according side.
■ Place the hook end of the strap through the loop and pull it until thestrap is fastened securely to the
lashing eye.
210Vehicle care
Only mount one temporary spare
wheel. The permissible maximum
speed on the label on the temporary
spare wheel is only valid for the
factory-fitted tyre size.
If your vehicle gets a flat tyre in the
rear while towing another vehicle,
mount the temporary spare wheel in the front and the full tyre in the rear.
Tyre chains 3 199.
Spare wheel with directional tyre
If possible, fit directional tyres such
that they roll in the direction of travel.
The rolling direction is indicated by a
symbol (e.g. an arrow) on the
sidewall.
The following applies to tyres fitted
opposing the rolling direction:
■ Driveability may be affected. Have the defective tyre renewed or
repaired as soon as possible.
■ Drive particularly carefully on wet and snow-covered road surfaces.Jump starting
Do not start with quick charger.
A vehicle with a discharged vehicle
battery can be started using jump
leads and the vehicle battery of
another vehicle.9 Warning
Be extremely careful when starting
with jump leads. Any deviation
from the following instructions can
lead to injuries or damage caused
by vehicle battery explosion or
damage to the electrical systems
of both vehicles.
9 Warning
Avoid contact of the vehicle
battery with eyes, skin, fabrics and painted surfaces. The fluid
contains sulphuric acid which can
cause injuries and damage in the
event of direct contact.
■ Never expose the vehicle battery to
naked flames or sparks.
■ A discharged vehicle battery can already freeze at a temperature of
0 °C. Defrost the frozen battery
before connecting jump leads.
■ Wear eye protection and protective
clothing when handling a vehicle
battery.
■ Use a booster battery with the same voltage (12 volts). Its capacity(Ah) must not be much less than
that of the discharged battery.
■ Use jump leads with insulated terminals and a cross section of at
least 16 mm 2
(25 mm 2
for diesel
engines).
■ Do not disconnect the discharged battery from the vehicle.
■ Switch off all unnecessary electrical
consumers.
■ Do not lean over the battery during jump starting.
■ Do not allow the terminals of one lead to touch those of the other
lead.
240IndexAAccessories and vehicle modifications .......................... 168
Active head restraints ..................35
Adaptive brake light ....................146
Adaptive forward lighting ..........
.................................. 99, 119, 179
Adjustable air vents ...................132
Airbag and belt tensioners ...........94
Airbag deactivation ................53, 95
Airbag label................................... 48 Airbag system .............................. 48
Air conditioning regular operation ................................ 133
Air conditioning system .............. 126
Air intake .................................... 133
Air vents...................................... 132
Alert ............................................ 108
Antifreeze ................................... 171
Antilock brake system ................ 146
Antilock brake system (ABS) .......96
Anti-theft alarm system ................27
Anti-theft locking system .............. 27 Appearance care ........................214
Armrest ................................... 39, 42
Armrest storage ........................... 63
Ashtrays ....................................... 89
Automatic anti-dazzle ..................30
Automatic light control ...............117Automatic locking ..................24, 99
Automatic transmission .............142
Auxiliary heater .......................... 132
B Battery discharge protection ......124
Battery voltage ........................... 108
Belts.............................................. 44 Bicycle rack .................................. 64
Bonnet ....................................... 170
Brake and clutch fluid .................218
Brake and clutch system .............96
Brake assist ............................... 148
Brake fluid .................................. 173
Brakes ............................... 146, 173
Breakdown.................................. 212
Bulb replacement ....................... 176
C Capacities .................................. 232
Car Pass ...................................... 19
Catalytic converter .....................142
Central locking system ................21
Centre console lighting ..............123
Changing tyre and wheel size ...198
Charging system .......................... 95
Child locks ................................... 25
Child restraint installation locations ................................... 57
Child restraints.............................. 54
244
Three-point seat belt .................... 45
Tools .......................................... 192
Top-tether fastening eyes ............60
Tow bar....................................... 163
Towing ................................ 163, 212
Towing another vehicle .............213
Towing a trailer ........................... 163
Towing equipment .....................164
Towing the vehicle .....................212
Traction Control system ............. 149
Traction Control system off .......... 97
Trailer coupling ........................... 163
Trailer towing ............................. 163
Transmission ............................... 16
Transmission display .................142
Tread depth ............................... 198
Trip computer ............................ 109
Trip odometer .............................. 90
Tunnel detection .........................117
Turn and lane-change signals ...120
Turn signal ................................... 94
Tyre chains ................................ 199
Tyre designations ......................193
Tyre pressure ............................ 194
Tyre pressure monitoring system ............................... 97, 194
Tyre pressures ........................... 233
Tyre repair kit ............................. 199
Tyres and wheel size, changing. 198U
Ultrasonic parking assist ...... 97, 152
Underseat storage .......................63
Upholstery .................................. 216
Upshift .......................................... 97
Using this manual ..........................3
V Variable effort steering .................97
Vehicle battery ........................... 174
Vehicle battery, jump starting .....210
Vehicle checks............................ 169
Vehicle data ................................ 222
Vehicle data recording and privacy ..................................... 237
Vehicle dimensions .................... 231
Vehicle Identification Number ....220
Vehicle jack ................................ 192
Vehicle messages .....................105
Vehicle personalisation .............112
Vehicle security ............................ 27
Vehicle specific data ......................3
Vehicle storage ........................... 168
Vehicle tools ............................... 192
Vehicle unlocking ........................... 6 Vehicle weight ........................... 230
Ventilation ................................... 125W
Warning chimes .........................108
Warning lights ............................... 89
Warning triangle .......................... 78
Washer and wiper systems .........14
Washer fluid ............................... 173
Welcome lighting ........................123
Wheel changing .........................204
Wheel covers ............................. 198
Wheels and tyres .......................193
Windows ....................................... 30
Windscreen................................... 30 Windscreen wiper/washer ...........84
Winter tyres ............................... 193
Wiper blade replacement ..........176