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ment panel through a warning lamp and a
›››
warning to the driver
Fig. 236. When only
one specific tyre is affected, its position within
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 heav-
ier 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
indicate anything under certain circumstances
(e.g. sporty driving, snow-covered or unpaved
roads, or when driving with snow chains).
Tyre pressure monitor system
Wheels and tyres
Calibrate the tyre pressure monitoring indi-
cator
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
●
OR: through the Service menu on the in-
strument cluster
When driving, the system self-calibrates the
tyre pressure provided by the driver and the
wheels fitted. After a long journey with varied
speeds the programmed values are collected
and monitored.
With the wheels under very heavy loads, the
tyre pressure must be increased to the total
recommended tyre pressure before the cali-
or it may not
›››
bration
Fig. 236.
>
›››
page 35.
›››
page 29.
WARNING
When the tyres are inflated at different pres-
sures or at a pressure that is too low then a
tyre may be damaged resulting in a loss of
control of the vehicle and a serious or fatal
accident.
●
If the lamp
lights up, reduce speed im-
mediately and avoid any sudden turning or
braking manoeuvres. Stop when possible,
and check the tyre pressure and status.
●
The tyre pressure monitoring system can
only operate correctly if all of the tyres are
inflated to the correct pressure when cold.
●
If a tyre has not been punctured and it does
not have to be changed immediately, drive to
the nearest specialised workshop at a mod-
erate speed and have the tyre checked and
inflated to the correct pressure.
Note
● Driving for the first time with new tyres at
a high speed can cause them to slightly ex-
pand, which could then produce an air pres-
sure warning.
● If excessively low tyre pressure is detected
with the ignition on, an audible warning will
sound. In the event that there is a fault in the
system, an audible warning will sound.
● Driving on unpaved roads for a long pe-
riod of time, or sporty driving, may tempora-
rily deactivate the system. The control lamp
shows a fault, but disappears when road con-
ditions or the driving style change.
347
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