166Vehicle carePuncture
A puncture or severely under-inflated
tyre is indicated by illumination of
control indicator w together with C
3 85 and a corresponding message
appears in the DIC. Stop vehicle and
switch off engine.
Tyre pressure 3 196, Tyre repair kit
3 168, Spare wheel 3 172, Wheel
changing 3 171.
Temperature dependency Tyre pressure depends on the
temperature of the tyre. During
driving, tyre temperature and
pressure increase.
Tyre pressure values provided on the tyre information label and tyre
pressure chart are valid for cold tyres,
which means at 20 °C. The pressure
increases by nearly 1.5 psi for a
10 °C temperature increase. This
must be considered when warm tyres
are checked.The tyre pressure value displayed in
the DIC shows the actual tyre
pressure. A cooled down tyre will show a decreased value, which does
not indicate an air leak.
Relearn function
After changing the wheels, TPMS
needs to recalculate.
With the vehicle stationary, select the tyre pressure menu in the DIC by
pressing button on end of wiper lever.
Press and hold button for approx.5 seconds to initialise recalculation. A
corresponding message appears in
the DIC.
Several minutes of driving at a speed above 25 mph may be required to
complete the relearn process. The
system can only provide limited
information during this time.
If problems occur during the relearn
process, control indicator w remains
illuminated and a warning message is
displayed in the DIC.
Driver Information Centre (DIC) 3 89.
Vehicle messages 3 90.
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 3 168.
External high-power radio equipment
could disrupt the tyre pressure
monitoring system.
Each time the tyres are replaced, TPMS sensors must be dismounted
and serviced by a workshop.
