Icon Possible cause
There is a tire 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.
Measure
1. Reduce the vehicle speed. Do not continue
to exceed a speed of 80 mph/130 km/h.
2. At the next opportunity, for instance at a fill-
ing station, check the tire inflation pressure
in all four tires and correct if necessary.
3. Perform a system reset.
If there is a significant tire pressure
loss
Message
When using tires with special approval, the
Tire Pressure Monitor displays a message if a
tire loses a significant amount of pressure.
A yellow warning light is illuminated in
the instrument cluster.
In addition, an icon with the affected tire ap-
pears in a Check Control message on the con-
trol display.
Icon
Possible cause
There is a flat tire or a major tire
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.
Measure
1. Reduce your speed and come to a stop
carefully. Avoid sudden braking and steer-
ing maneuvers.
2. Follow the instructions for what to do in
case of a flat tire.
Additional information:
Actions in the event of a flat tire, refer to
page 332.
Actions in the event of a flat tire
1. In the event of a flat tire, identify the dam-
aged tire.
2. Check the tire pressure in all four tires,
for instance using the tire pressure display
from a tire repair set.
For tires with special approval: when the
tire pressure in all four tires is correct, the
Tire Pressure Monitor may not have been
reset. Then perform the reset.
If no tire damage can be identified, con-
tact an authorized service center or another
qualified service center or repair shop.
3. Repair the flat tire, e.g., with a tire repair set
or by changing the wheel.
Using a tire sealant, e.g., from the tire re-
pair set, may damage the wheel electron-
ics. Have the electronics replaced at the
next opportunity.
System limits
Temperature
The tire inflation pressure depends on the
tire's temperature.
Driving or exposure to the sun will increase the
tire temperature, thus increasing the tire infla-
tion pressure.
The tire inflation pressure is reduced when the
tire temperature falls again.
These circumstances may cause a warning
when temperatures fall very sharply.
Seite 332
MOBILITY
Wheels and tires
332
Online Edition for Part no. 01405A8A536 - VI/23