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Possible cause
The tyre was not inflated properly, for
example insufficient air was added.
The system has detected a wheel
change, but no reset has been per‐
formed.
The tyre inflation pressure has drop‐
ped compared to the last reset.
No reset has been performed on the
system. System warning is based on
the tyre inflation pressures saved
during the last reset.
Action
1.
Check the tyre inflation pressure and adjust
as necessary.
2.
Perform a system reset.
If the tyre inflation pressure is too low
Message
A yellow warning light is illuminated in
the instrument cluster.
In addition, an icon with a Check Control mes‐
sage is shown on the control display.
Icon
Possible cause
There has been a tyre pressure loss.
No reset has been performed on the
system. System warning is based on
the tyre inflation pressures saved dur‐
ing the last reset.
Action
1.
Reduce speed. Do not exceed a speed of
130 km/h, 80 mph.
2.
At the next opportunity, for example at a filling
station, check the tyre inflation pressure in all
four tyres and correct if necessary.
3.
Perform a system reset.
Online Edition for Part no. 01405A38CB9 - VI/21
Wheels and tyres
If there is a significant tyre pressure loss
Message
A yellow warning light is illuminated in
the instrument cluster.
In addition, an icon indicating which tyre is affec‐
ted is shown in a Check Control message on the
control display.
Icon
Possible cause
There is a flat tyre or substantial tyre
pressure loss.
No reset has been performed on the
system. System warning is based on
the tyre inflation pressures saved dur‐
ing the last reset.
Action
1.
Reduce your speed and carefully stop the ve‐
hicle. Avoid heavy braking and sudden steer‐
ing manoeuvres.
2.
Follow the description of what to do when the
vehicle gets a flat tyre.
What to do in the event of a flat tyre, see
page 347.
What to do in the event of a flat tyre
1.
Identify the damaged tyre.
Check the tyre inflation pressure in all four
tyres, for example using the tyre pressure in‐
dicator of a flat tyre kit.
For tyres with special approval: if all four tyres
are inflated to the correct tyre inflation pres‐
sures, the Tyre Pressure Monitor might not
have been reset. Perform a reset.
If no tyre damage can be found, contact a
Service Partner of the manufacturer or an‐
other qualified Service Partner or a specialist
workshop.
2.
Repair the flat tyre, for example using a flat
tyre kit or by changing the wheel.
MOBILITY
347
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