Wheels
If the indicator lamp appears after you have
switched the vehicle on or while you are driving
and the indicator lamp flashes for approxi-
mately one minute and then remains lit, there is
a fault in the system. This fault can have the fol-
lowing causes:
correspond to the specified values and adapt
the pressures to the current load ðpage 252,
Fig. 137. Only adjust and store the pressure of
the tyres when they are at approximately ambi-
ent temperature. If the tyre temperatures are
higher than the ambient temperature, the pres-
sures should be increased by approx. 0.2 bar
above the pressures specified on the tyre pres-
sure sticker.
– If the display appears at the end of the initiali-
sation process, this means that the system can-
not detect the wheel sensors required to moni-
tor the pressures. This can happen if one or
more of the tyres fitted does not have a sensor
or the sensors are incompatible.
►
►
Switch the vehicle on.
Select: > Car > Servicing > Store tyre pres-
sures > Store tyre pressures > Yes, store now.
If the new tyre pressures do not appear on the
centre display, you will need to drive for about
10 minutes so that the sensor signal from the
wheels can be received again.
►
– One of the wheel sensors or another compo-
nent may not be working.
– Snow chains interfere with the signals trans-
mitted by the sensors and can prevent the sys-
tem from functioning properly.
During this initialisation phase, -.- will be shown
on the pressure and temperature display and
some functions of the tyre pressure monitoring
system will not be available. The system will
warn you only if one or more tyre pressures are
below the minimum reference pressure.
– The tyre pressure monitoring system may be in-
operative due to radio interference.
– Radio systems operating on the same frequen-
cy, such as radio headphones or two-way radios
inside the vehicle, produce strong electromag-
netic fields which cause temporary interfer-
ence.
Tyre pressure: wheel change detected.
Please check all tyres and store pressures in
MMI
The indicator lamp and the message will
disappear as soon as the tyre pressure monitor-
ing system is available again. If the fault persists
and the indicator lamp stays on, you should
drive to a qualified workshop and have the fault
rectified.
If the indicator lamp lights up and the message
also appears, the system has detected that the
sensor positions have changed because of a
wheel change or that new sensors have been fit-
ted. Store the new tyre pressures.
WARNING
WARNING
Please observe the important safety informa-
tion and notes ðpage 256.
Please observe the important safety informa-
tion and notes ðpage 256.
Storing tyre pressures in the tyre pressure
monitoring system
Information on run-flat
tyres
To enable the tyre pressure monitoring system to
work reliably, it is important to store the correct
pressure settings.
Run-flat tyres have reinforced sidewalls which
protect the tyre in the event of a loss of pressure.
If the tyre pressure loss indicator or the tyre pres-
sure monitoring system shows a loss of pressure
in one or more tyres, you can continue driving for
at least 30 km if your vehicle is equipped with
run-flat tyres. Drive to a qualified workshop with-
out delay and have the damage repaired.
You should always store the tyre pressures if new
sensors have been fitted or after changing the
pressures, such as when carrying a different load.
►
Before storing the new tyre pressures, check
that the current pressures on all four wheels
258
English 
