Page 177 of 228

Vehicle care
177
System initialisation After a wheel change, the system
must
be initialised: inflate the tyres to
the prescribed pressure, switch on
the ignition, press and hold the DDS
button for approx. 4 seconds, control
indicator w flashes three times.
Tyre deflation detection
system
The tyre deflation detection system
continually checks the rotation speed
of all four tyres. If a tyre loses pressure the control
indicator
w illuminates red. Stop
immediately
and check tyre pressure.
Control indicator w 3 90.
System initialisation After tyre pressure correction or
wheel change, the system must be
initiated:
Switch on the ignition, press
and hold the DDS button for approx.
4 seconds, control indicator w flashes
three times. 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). 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.
Page 178 of 228

178
Vehicle care
If there is more wear at the front than
the rear, swap round front wheels and
rear wheels.
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 reprogram the
speedometer 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 beaded edge.
Wheel covers must not impair brake
cooling.
Remove the wheel covers if tyre
chains are to be installed. 9
Warning Use of unsuitable tyres or wheel
covers could lead to sudden
pressure loss and thereby
accidents. 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 not permitted on tyres
of size 225/40 R 18, 225/40 ZR 18
and 235/35 R 19.
Page 179 of 228
Vehicle care
179
The use of tyre chains is not permitted
on the temporary spare wheel.
Tyre repair kit
Minor damage to the tyre tread or
sidewall
can be repaired with the tyre
repair kit.
Do not remove foreign bodies from
the tyres.
Tyre damage exceeding 4 mm or that
is near the rim 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 hand brake and engage first
gear, reverse gear or P. The tyre repair kit is in the stowage
compartment in the load
compartment.
Push the locking tabs forward and
remove the cover.
1.
Take the sealant bottle andbracket with air hose from the
insert. 2. Detach air hose from bracket and
screw onto sealant bottle
connection.
Page 180 of 228
180
Vehicle care
3. Position the sealant bottle on the bracket. Make sure that the bottle
does not fall. 4. Unscrew
valve cap from defective
tyre.
5. Screw tyre inflation hose to valve. 6. Screw air hose onto compressor
connection.
7.
Open cover of electricalconnection from the left and pull
out the plug. 8. Open the rear power outlet and
insert plug of tyre repair kit.
To avoid discharging the battery,
we recommend running the
engine. 9.
Press < button on the
compressor.
The tyre is filled with
sealant.
10. The compressor pressure gauge briefly indicates up to 6 bar whilst
the sealant bottle is emptying
(approx. 30 seconds). Then the
pressure starts to drop.
11. All of the sealant is pumped into the tyre. Then the tyre is inflated.
Page 181 of 228

Vehicle care
181
12. The prescribed tyre pressure should be obtained within 10
minutes. Tyre pressure 3 220.
When the correct pressure is
obtained, switch off the
compressor by pressing the <
button again.
If the prescribed tyre pressure is
not obtained within 10 minutes,
remove the tyre repair kit. Move
the vehicle one tyre rotation.
Reattach the tyre repair kit and
continue the filling procedure for
10 minutes. If the prescribed tyre
pressure is still not obtained, the
tyre is too badly damaged. Seek
the assistance of a workshop.
Release excess tyre pressure
using the ] button.
Do
not run the compressor longer
than 10 minutes.
13. Disconnect plug from power outlet, place in plug compartment
and remove tyre repair kit. Push
catch on bracket to remove
sealant bottle from bracket. Screw
tyre inflation hose to free
connection of sealant bottle. This prevents sealant from escaping.
Stow tyre repair kit in load
compartment.
14.
Remove any excess sealant using a cloth.
15. Take the label indicating maximum permitted speed from
the sealant bottle and affix in the
driver's field of view.
16. Continue driving immediately so that sealant is evenly distributed
in the tyre. After driving approx. 10
km (but no more than 10 minutes),
stop and check tyre pressure.
Screw compressor air hose
directly onto tyre valve and
compressor when doing this.
If tyre pressure is more than 1.3
bar, set it to the correct value.
Repeat the procedure until there
is no more loss of pressure.
If the tyre pressure has fallen
below 1.3 bar, the vehicle must
not be used. Seek the assistance
of a workshop.
17. Stow away tyre repair kit in load compartment. Note
The driving comfort of the repaired
tyre is severely affected, therefore
have this tyre replaced.
If unusual noise is heard or the
compressor becomes hot, turn
compressor off for at least 30
minutes.
The built-in safety valve opens at
a pressure of 7 bar.
The sealant can only be stored for
approximately 4 years, after which
time its sealing capability is not
longer guaranteed. Pay attention to
storage information on sealant
bottle.
Replace the used sealant bottle.
Dispose of the bottle as prescribed
by applicable laws.
The
compressor and sealant can be
used from approx. -30 °C.
The adapters supplied can be used
to pump up other items e.g.
footballs, air mattresses, inflatable
dinghies etc.
Page 182 of 228

182
Vehicle care
Wheel changing
Some vehicles are equipped with
a tyre repair kit instead of a spare
wheel 3 179.
Make the following preparations and
observe the following information: ■ Park
the vehicle on a level, firm and
non-skid surface. The front wheels
must be in the straight-ahead
position.
■ Apply the hand brake and engage first gear, reverse gear or P.
■ Remove the spare wheel 3 183.
■ Never change more than one wheel at once.
■ Use the jack only to change wheels.
■ If the ground on which the vehicle is standing is soft, a solid board
(max. 1 cm thick) should be placed
under the jack.
■ No people or animals may be in the vehicle when it is jacked up.
■ Never crawl under a jacked-up vehicle.
■ Do not start the vehicle when it is raised on the jack. ■ Before screwing in the wheel bolts,
clean them and lightly coat the
taper of each wheel bolt with
commercially available grease. 1. Pull off the wheel cover with the
hook. Vehicle tools 3 173.
For wheel covers with visible
wheel
bolts: The cover can remain
on the wheel. Do not remove the
retaining rings on the wheel bolts.
Alloy wheels: Disengage wheel
bolt caps with a screwdriver and
remove. To protect the wheel,
place a soft cloth between the
screwdriver and the alloy wheel. 2. Install the wheel wrench ensuring
that it locates securely and
slacken each bolt by half a turn.
Page 183 of 228

Vehicle care
183
3. Ensure the jack is positioned correctly with the vehicle jacking
points. 4. Set the jack to the necessary
height before positioning it directly
below the jacking point in
a manner that prevents it from
slipping. Attach jack handle and with the
jack correctly aligned rotate
handle until wheel is clear of the
ground.
5.
Unscrew the wheel bolts.
6. Change the wheel.
7. Screw in the wheel bolts.
8. Lower vehicle.
9. Install the wheel wrench ensuring that it locates securely and tighten
each bolt in a crosswise
sequence. Tightening torque is
110 Nm.
10. Align the valve hole in the wheel cover with the tyre valve before
installing. Install wheel bolt caps.
11.
Stow the replaced wheel 3 179
and the vehicle tools 3 173.
12. Check the tyre pressure of the installed tyre and also the wheel
bolt torque as soon as possible.
Have the defective tyre renewed or
repaired.
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.
The spare wheel has a steel rim.
Use of a spare wheel that is smaller
than the other wheels or together with
winter tyres could affect driveability.
Have the defective tyre replaced as
soon as possible.
Page 184 of 228
184
Vehicle careThe spare wheel is kept beneath the
vehicle.
1.
Open the stowage in the loadcompartment 3 173.
2. Fully release the hexagon bolt in the stowage compartment using
the wheel wrench.
3. Lift the spare wheel holder.
4. Unhook the catch and lower the spare wheel. 5. Detach the safety cable.
6.
Lower holder all the way andremove spare wheel.
7. Change the wheel.
8. Place replaced wheel in spare wheel holder with outside of wheel
facing upwards. Wheels only up to
16 inches can be placed. 9. Lift the spare wheel holder, insert
the safety cable.
10.
Lift the spare wheel holder andengage in the catch. The open
side of the catch must point in the
direction of travel.