Practical tips
Tyre pressure monitor system
Control lamp
It lights up
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.
Flashes
System fault
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
indicator
›››
page 342 . If the fault continues, go to a
specialised workshop.
Several control and warning lamps light up
f
or a f
ew seconds when the ignition is switch-
ed on while the function is verified. They will
switch off after a few seconds.
WARNING
Observe the safety warnings
›››
in Con-
trol and w
arning lamps on page 83.
Tyre pressure monitor indicator
Fig. 215
Instrument panel: warning of loss of tyre
pressure.
The tyre pressure monitoring system com-
par
es the individual speeds of e
ach wheel
and thus the dynamic radius with the help of
the ABS sensors.
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
a warning to the driver
›››
Fig. 215 . When only
one specific tyre is affected, its position with-
in the vehicle will be indicated.
Loss of pressure: Check left
tyre pressure!
Wheel tread change
The wheel diameter changes when:
●
Tyre pressure is changed manually.
●
Tyre pressure is insufficient.
●
The tyre structure is damaged.
●
The vehicle is unbalanced because of a
load.
●
The wheels on an axle are subject to a
heavier load (e.g. with a heavy load).
●
The vehicle is fitted with snow chains.
●
The temporary spare wheel is fitted.
●
The wheel on one axle is changed.
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).
Calibrate the tyre pressure monitoring in-
dicator
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.
●
Switch the ignition on.
●
Memorise the new inflation pressure in the
Infotainment system: function button >
Vehicle info > Vehicle status
›››
page 88 .
●
OR: from the instrument cluster's Service
menu
›››
page 69 .
342
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