Wheels
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Tyre pressure is insufficient.
Tyre pressure monitor indicator
Tyre pressure monitor sys-
tem
The tyre structure is damaged.
The vehicle is unbalanced because of a
load.
Control lamp
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The wheels on an axle are subject to a
heavier load (e.g. with a heavy load).
It lights up
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The vehicle is fitted with snow chains.
The temporary spare wheel is fitted.
The wheel on one axle is changed.
The inflation pressure of one or more wheels is much
lower than the value set by the driver, or the tyre has
structural damage.
In addition, a audible warning sounds and a text mes-
sage is displayed on the instrument panel screen.
Stop the vehicle! Stop the vehicle safely as soon as
possible. Check all tyres and pressures. Replace any
damaged tyres.
There may be a delay in the reaction of the
tyre pressure monitoring indicator or it
may not indicate anything under certain cir-
cumstances (e.g. sporty driving, snow-cov-
ered or unpaved roads, or when driving with
snow chains).
Fig. 232 Instrument panel: warning of loss
of tyre pressure.
The tyre pressure monitoring system com-
pares the individual speeds of each wheel
and thus the dynamic radius with the help of
the ABS sensors.
Flashes
System fault
Calibrate the tyre pressure monitoring in-
dicator
The control lamp flashes for approximately 1 minute
and then lights up permanently.
If the tyre is inflated correctly, switch the ignition off
and on again. Re-calibrate the tyre pressure monitor
If the rolling circumference of one or more
wheels has changed, the tyre pressure moni-
toring indicator will indicate this on the in-
strument panel through a warning lamp and
After changing the tyre pressure or replacing
one or more wheels, the tyre pressure moni-
toring indicator must be recalibrated. Do the
same, for example, when the front and rear
wheels are swapped.
indicator page 339 . If the fault continues, go to a
›››
specialised workshop.
a warning to the driver Fig. 232 . When only
›››
one specific tyre is affected, its position with-
in the vehicle will be indicated.
Several control and warning lamps light up
for a few seconds when the ignition is switch-
ed on while the function is verified. They will
switch off after a few seconds.
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Switch the ignition on.
Loss of pressure: Check left
tyre pressure!
Memorise the new inflation pressure in the
Infotainment system: function button >
WARNING
Driving data > Vehicle status page 91 .
›››
Wheel tread change
Observe the safety warnings
in Con-
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OR: from the instrument cluster's Service
›››
The wheel diameter changes when:
trol and warning lamps on page 87.
»
menu page 73 .
›››
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Tyre pressure is changed manually.
339
English 
