Symbol Possible cause
There is a flat tire or a major loss in
tire inflation pressure.
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 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 361.
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 372.
Actions in the event of a flat tire
Normal tires
1.
Identify the damaged tire.
Check the tire inflation pressure in all four
tires, for instance using the tire pressure gage
of a flat tire kit.
For tires with special approval: when the tire
inflation pressure in all four tires is correct, the
Tire Pressure Monitor may not have been re‐
set. In this case, perform the reset.
If tire damage cannot be found, contact a
dealer’s service center or another qualified
service center or repair shop.
2. Repair the flat tire, e.g., with a flat tire kit or by
changing the wheel.
Use of sealant, for instance from the flat tire kit,
may damage the wheel electronics. Have the
electronics replaced at the next opportunity.
Run-flat tires
Safety information
Warning
The vehicle handles differently when a run-flat
tire has insufficient or no tire pressure; for in‐
stance, reduced lane stability when braking,
braking distances are longer and the self-steer‐
ing properties will change. There is a risk of ac‐
cident. Drive moderately and do not exceed a
speed of 50 mph/80 km/h.
Warning
Heavy trailers can start swinging when continu‐
ing to drive with a flat tire. There may be a risk
of accident or risk of damage to property. Do
not exceed a speed of 35 mph/60 km/h when
driving with a trailer and a flat tire. Immediately
brake in the case of swinging. Apply necessary
steering corrections as carefully as possible.
Maximum speed
You may continue driving with a damaged tire at
speeds up to 50 mph/80 km/h.
Continued driving with a flat tire
Follow the following when continuing to drive
with a damaged tire:
1.
Avoid sudden braking and steering maneu‐
vers.
2. Do not exceed a speed of 50 mph/80 km/h.
3. Check the tire inflation pressure in all four
tires at the next opportunity.
Seite 372
MOBILITY
Wheels and tires
372
Online Edition for Part no. 01405A10FB7 - VI/20
