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Vehicle care151
Low tyre pressure condition
A detected low tyre pressure
condition is indicated by illumination
of control indicator w 3 84 and a
corresponding message appears in
the Driver Information Centre.
If w illuminates, stop as soon as
possible and inflate the tyres as
recommended 3 178.
After inflating, driving may be
required to update the tyre pressure
values in the Driver Information
Centre. During this time w may
illuminate.
If w illuminates at lower temperatures
and extinguishes after some driving,
this could be an indicator for getting low pressure. Check tyre pressure.
If the tyre pressure must be reduced
or increased, switch off ignition.
Only mount wheels with pressure
sensors, otherwise the tyre pressure
will not be displayed and w flashes for
several seconds then illuminates continuously together with a
corresponding message in the Driver
Information Centre.
A spare wheel or temporary spare
wheel is not equipped with pressure
sensors. The tyre pressure
monitoring system is not operational
for these wheels. For the further three wheels, the system remains
operational.
Control indicator w and the
corresponding message appears at
each ignition cycle until the tyres are
inflated to the correct tyre pressure.
Driver Information Centre 3 86.
Vehicle messages 3 87.Puncture
A puncture or severely under-inflated
tyre is indicated by illumination of
control indicator w together with F
3 82 and a corresponding message
appears in the Driver Information
Centre.
Tyre pressure 3 178, Tyre repair kit
3 154, Spare wheel 3 158, Wheel
changing 3 157.
Temperature dependency
Tyre 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.
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152Vehicle care
Relearn function
After changing wheels, the system
needs to recalculate.
With the vehicle stationary, select the tyre pressure menu in the Driver
Information Centre by pressing button
on end of wiper lever. Press and hold button for approx. 3 seconds to
initialise recalculation. A
corresponding message appears in
the Driver Information Centre.
Several minutes of driving may be
required to complete the relearn
process.
If problems occur during the relearn
process, a warning message is
displayed in the Driver Information
Centre.
Driver Information Centre 3 86.
Vehicle messages 3 87.
General information The use of commercially available
liquid tyre repair kits can impair the
function of the system. Factory-
approved repair kits can be used.
Tyre repair kit 3 154.
External high-power radio equipment
could disrupt the tyre pressure
monitoring system.
Each time the tyres are replaced, tyre
pressure monitoring system sensors
must be dismounted and serviced by a workshop.
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. Ensure that the direction
of rotation of the wheels is the same
as before.
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Vehicle care153
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.
Tyre chains
Tyre chains are only permitted on the
front wheels.
Always use fine mesh chains that add no more than 15 mm to the tyre tread
and the inboard sides (including chain lock).
For tyre size 215/65 R16, consult a
workshop.
9 Warning
Damage may lead to tyre blowout.
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154Vehicle care
Wheel covers on steel wheels maycome into contact with parts of the
chains. In such cases, remove the
wheel covers.
Tyre chains may only be used at
speeds up to 30 mph and, when
travelling on roads that are free of
snow, they may only be used for brief
periods since they are subject to rapid wear on a hard road and may snap.
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 at tyre 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 the vehicle has a flat tyre:
Apply the parking brake and engage
first gear or reverse gear.
The tyre repair kit is located under the
driver's seat. Vehicle tools 3 148.
1. Remove the compressor and sealant bottle from the tyre repairkit case.
2. Remove the electrical connection cable and air hose from the
compartments on the underside
of the compressor.
3. Screw the air hose to the connection on the sealant bottle.
4. Fit the sealant bottle into the retainer on the compressor.
Set the compressor near the tyre
in such a way that the sealant
bottle is upright.
5. Unscrew valve cap from defective
tyre.
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Vehicle care155
6. Screw the filler hose to the tyrevalve.
7. The switch on the compressor must be set to O.
8. Connect the electrical connection cable to the power outlet or
cigarette lighter socket.
To avoid discharging the vehicle
battery, we recommend running
the engine.9. Set the rocker switch on the compressor to I. The tyre is filled
with sealant.
10. The compressor pressure gauge briefly indicates up to 6 bar(600 kPa/87 psi). Then the
pressure starts to drop.
11. All of the sealant is pumped into the tyre. Then the tyre is inflated.12. The prescribed tyre pressureshould be obtained within
15 minutes. Tyre pressure
3 178 . When the correct pressure
is obtained, switch off the
compressor.
If the prescribed tyre pressure is
not obtained within 15 minutes,
remove the tyre repair kit. Move
the vehicle one tyre rotation
(approx. 2 metres). Reattach the
tyre repair kit and continue the
filling procedure for 15 minutes. If
the prescribed tyre pressure is still not obtained, the tyre is too badly
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156Vehicle care
damaged. Seek the assistance of
a workshop.
Drain excess tyre pressure with
the button beside the pressure
indicator.
Do not run the compressor for
longer than 15 minutes.
13. Detach the tyre repair kit.
14. Remove any excess sealant using a cloth.
15. Take the label indicating maximum permitted speed from
the tyre repair kit and affix in the driver's field of view.
16. Store the sealant bottle in the plastic bag. Return tyre repair kitto case and stow under the
driver's seat.
17. Continue driving immediately so that the sealant is evenly
distributed throughout the tyre.
After driving approx. 6 miles, but
no more than 10 minutes, stop
and check tyre pressure using the
compressor. Screw air hose from
compressor directly onto tyre
valve when doing this.
18. If the tyre pressure is more than 2.2 bar (220 kPa/31 psi), set it to
the correct value. Repeat the
procedure until there is no more
loss of pressure.
If the tyre pressure has fallen
below 2.2 bar (220 kPa/31 psi),
the vehicle must not be driven.
Seek the assistance of a
workshop.
19. Detach the tyre repair kit, return to
case and stow under the driver's
seat.9 Warning
Do not allow the sealant to contact
skin, eyes or clothing. If swallowed seek medical assistance
immediately.
Notice
The driving characteristics 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.
Pay attention to storage information
and expiry date on sealant bottle. Its
sealing capability is not guaranteed
after this time.
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Vehicle care157
Replace the used sealant bottle.
Dispose of the sealant bottle as
prescribed by applicable laws.
Wheel changing
Some vehicles are equipped with a
tyre repair kit instead of a spare wheel 3 154.
Make the following preparations and
observe the following information:
■ Park the vehicle on a level, firm and
non-slippery surface. The front wheels must be in the straight-ahead position.
■ Apply the parking brake and engage first gear or reverse gear.
■ Remove the spare wheel 3 158.
■ Never change more than one wheel
at a time.
■ Use the jack only to change wheels
in case of puncture, not for a
seasonal winter or summer tyre
change.
■ If the ground on which the vehicle is standing is soft, a solid board
(max. 1 cm thick) should be placed
under the jack.■ Take heavy objects out of the vehicle before jacking up.
■ 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 engine when the vehicle is raised on the jack.
1. Remove the wheel cover (using the hook supplied). Vehicle tools
3 148.
2. Loosen each of the wheel bolts by
half a turn using the wheel
wrench. Ensure the wrench
locates securely. The wrench
should turn anticlockwise to
loosen the bolts. Invert the wrench if necessary.
3. Place lifting pad spigot of the jack
under the jacking hole located
nearest the wheel concerned.
Ensure the jack is positioned
correctly. The jack base must be
on the ground directly below the
jacking hole in a manner that
prevents it from slipping.
4. Install wrench onto the jack and raise the vehicle by turning the
wrench until the wheel is clear of
the ground.
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158Vehicle care
5. Unscrew wheel bolts completelyby turning anticlockwise and wipe
clean with a cloth.
Put wheel bolts somewhere
where the threads will not be
soiled.
6. Change the wheel. Spare wheel 3 158.
7. Screw in the wheel bolts.
8. Lower the vehicle and remove jack.
9. Tighten each of the wheel bolts in
a crosswise sequence using the
wheel wrench. Ensure the wrench
locates securely. The wrench
should turn clockwise to tighten
the bolts. Invert the wrench if
necessary.
Tightening torque is 160 Nm.
10. Replace the wheel cover, ensuring that the valve hole in thewheel cover is aligned with the
tyre valve before installing.11. Stow the replaced wheel 3 158
and the vehicle tools 3 148.
12. Have the new wheel balanced on the vehicle.
Check the tyre pressure of the
installed tyre 3 178.
Check the wheel bolt torque.
Have the defective tyre renewed or
repaired as soon as possible.
Spare wheel
Some vehicles are equipped with a tyre repair kit instead of a spare wheel 3 154.
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.Caution
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.
It may be necessary to jack the
vehicle up to gain access to the spare
wheel on a fully loaded vehicle with a
flat rear tyre.
Wheel changing 3 157.