Safety note
WARNING
A damaged standard tyre with too little or no
tyre inflation pressure impairs driving character‐
istics, for example steering and braking. Tyres
with run-flat properties allow a limited level of
stability to be maintained. There is a risk of ac‐
cident. Do not continue driving if the vehicle is
fitted with standard tyres. Comply with the
notes on run-flat tyres and continuing to drive
with these tyres.
If a tyre inflation pressure check is
required
Message
A symbol with a Check Control message is
shown on the Control Display.
Sym‐
bol
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. The system is using the tyre
inflation pressures saved during the
last reset for the warning.
Action
1.
Check the tyre inflation pressure and adjust
as necessary.
2. Perform a reset of the system.
If the tyre inflation pressure is too
low
Message
A yellow warning lamp is illuminated in
the instrument cluster.
In addition, a symbol with a Check Control mes‐
sage is shown on the Control Display.
Symbol Possible cause
There has been a loss of tyre infla‐
tion pressure.
No reset has been performed on the
system. The system is using the tyre
inflation pressures saved during the
last reset for the warning.
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 reset of the system.
If there is a significant loss of tyre
inflation pressure
Message
A yellow warning lamp is illuminated in
the instrument cluster.
In addition, a symbol with the affected tyre is
shown in a Check Control message on the Con‐
trol Display.
Seite 383
Wheels and tyres
MOBILITY
383
Online Edition for Part no. 01405A1EA53 - X/20
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