Vehicle care251
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.
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.
252Vehicle careTyre 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 215/60 R 16 and
225/50 R 17.
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 tyre's sidewall cannot be repaired with the tyre repair kit.9 Warning
Do not drive faster than 80 km/h.
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.
The tyre repair kit is on the left side in
the load compartment behind a cover.
1. Take the tyre repair kit from the compartment.
2. Remove the compressor.
Vehicle care257
Attach wheel wrench and with the
jack correctly aligned rotate wheel wrench until wheel is clear of the
ground.
6. Unscrew the wheel nuts. 7. Change the wheel. Spare wheel 3 257
8. Screw on the wheel nuts.
9. Lower vehicle.
10. Install the wheel wrench ensuring that it locates securely and tighten
each nut in a crosswise
sequence. Tightening torque is
140 Nm.
11. Align the valve hole in the wheel cover with the tyre valve before
installing.
Install wheel nut caps.
12. Install vehicle jacking point cover.
13. Stow the replaced wheel 3 257
and the vehicle tools 3 246.
14. Check the tyre pressure of the installed tyre and the wheel nuttorque as soon as possible.
Have the defective tyre renewed or
repaired as soon as possible.
Jacking position for liftingplatformRear arm position of the lifting
platform centrically under the recess
of the sill.
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.
The spare wheel can be classified as
a temporary spare wheel depending
on the size compared to the other
mounted wheels and country
regulations.
Vehicle care259
8. Lower holder all the way andremove spare wheel.
9. Change the wheel. The damaged wheel has to be
secured in the load compartment,
see below.
10. Lift the empty spare wheel holder and insert the safety cable.
11. Lift the spare wheel holder farther
and engage in both catches. The
open sides of the catches must
point in the direction of travel.
12. Close the empty spare wheel holder by turning both hexagon
bolts clockwise successively
using the wheel wrench.
13. Fit the caps above both hexagon bolts.
14. Stow wheel wrench and the jack in the stowage in front of the
tailgate.
15. Close the stowage compartment cover.
When stowing again the spare wheel
in the spare wheel holder, note that
the wheel is positioned with the tyre
valve above the recess of the wheel
holder.
Stowing a damaged wheel in the load compartment
The spare wheel holder is not
designed for other tyre sizes than
spare wheel.
A damaged wheel wider than the spare wheel has to be stowed in the
load compartment and secured with a strap. Vehicle tools 3 246.The seats of the third row must be
folded in 3 78.
1. Position the wheel close to the left
sidewall of the load compartment.
2. Place the loop end of the strap through the front lashing eye on
the left side.
3. Place the hook end of the strap through the loop and pull it until
the strap is fastened securely to
the lashing eye.
260Vehicle care
4. Insert the strap through thespokes of the wheel as shown in
the illustration.
5. Mount the hook to the rear left lashing eye.
6. Tighten the strap and secure it using the buckle.
9 Danger
Always drive with folded up and
engaged rear seat backrests when stowing a damaged full size wheel
in the load compartment.
9 Warning
Storing a jack, a wheel or other
equipment in the load
compartment could cause injury if they are not fixed properly. During a sudden stop or a collision, looseequipment could strike someone.
Store jack and tools always in the
respective storage compartments
and secure them by fixing.
Damaged wheel placed in the load
compartment must always be
secured by the strap.
Temporary spare wheel
The use of the temporary spare wheel
could affect driveability. Have the
defective tyre renewed or repaired as soon as possible.
Only mount one temporary spare
wheel. Do not drive faster than
80 km/h. Take curves slowly. Do not
use for a long period of time.
If your vehicle gets a flat tyre on the
rear while towing another vehicle,
mount the temporary spare wheel in the front and the full tyre in the rear.
Tyre chains 3 252.
Directional tyres
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.
292IndexAAccessories and vehicle modifications .......................... 223
Active Emergency Braking .........192
Active head restraints ...................38
Adaptive cruise control .......116, 182
Adaptive forward lighting ..........
................................ 116, 141, 233
AdBlue ........................ 114, 166, 269
Adjustable air vents ...................156
Advanced parking assist ............197
Airbag and belt tensioners .........111
Airbag deactivation ..............57, 111
Airbag system .............................. 55
Air conditioning regular operation ................................ 158
Air conditioning system .............. 151
Air intake .................................... 157
Air vents...................................... 156
Antilock brake system ................ 173
Antilock brake system (ABS) .....113
Anti-theft alarm system ................27
Anti-theft locking system .............. 27
Appearance care ........................264
Armrest ......................................... 44
Armrest storage ........................... 68
Ashtrays ..................................... 103
Automatic anti-dazzle ..................31
Automatic light control ...............139Automatic locking ........................25
Automatic transmission .............169
Auxiliary heater ........................... 156
B
Battery discharge protection ......149
Battery voltage ........................... 127
Bicycle rack .................................. 70
BlueInjection ............................... 166
Bonnet ....................................... 225
Brake and clutch fluid .................269
Brake and clutch system ...........112
Brake assist ............................... 175
Brake fluid .................................. 228
Brakes ............................... 173, 228
Breakdown.................................. 262
Bulb replacement ....................... 231
C
Capacities .................................. 284
Cargo management system ........88
Car Pass ...................................... 21
Catalytic converter .....................166
Central locking system ................23
Centre console lighting ..............148
Centre console storage ...............69
Changing tyre and wheel size ...251
Charging system ........................ 111
Child locks ................................... 25