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Symbol Possible cause
There is a flat tire or a major loss in
tire inflation pressure.
Measure
1. Reduce your speed and stop cautiously.
Avoid sudden braking and steering maneu‐
vers.
2. Check whether the vehicle is fitted with nor‐
mal tires or run-flat tires.
Run-flat tires are labeled with a circular sym‐
bol containing the letters RSC marked on the
tire's sidewall.
Run-flat tires, refer to page 341.
3. Read the description on What to do in case of
a flat tire.
Actions in the event of a flat tire, refer to
page 352.
Messages: for tires with special
approval
General information
A low tire inflation pressure may cause the DSC
Dynamic Stability Control to be switched on.
Safety information
Warning
A damaged regular tire with low or missing tire
inflation pressure impacts handling, such as
steering and braking response. Run-flat tires
can maintain limited stability. There is a risk of
accident. Do not continue driving if the vehicle
is equipped with normal tires. Follow the infor‐
mation on run-flat tires and continued driving
with these tires.
If a tire inflation pressure check is
required
Message
A symbol with a Check Control message ap‐
pears on the Control Display.
Sym‐
bol
Possible cause
Inflation was not carried out accord‐
ing to specifications, e.g., the tire has
not been sufficiently inflated.
The system has detected a wheel
change, but no reset was done.
The tire inflation pressure has fallen
below the level of the last reset.
No reset was performed for the sys‐
tem. The system issues a warning
based on the tire inflation pressures
stored during the last reset.
Measure
1.
Check the tire pressure and correct as
needed.
2. Perform a system reset.
If the tire inflation pressure is too
low
Message
A yellow warning light is illuminated in
the instrument cluster.
In addition, a symbol with a Check Control mes‐
sage appears on the Control Display.
Symbol Possible cause
There is a tire inflation pressure loss.
No reset was performed for the sys‐
tem. The system issues a warning
based on the tire inflation pressures
stored during the last reset.
Seite 351
Wheels and tires
MOBILITY
351
Online Edition for Part no. 01405A03D02 - II/20
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