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Practical hints
What to do if …
Display message Possible cause/consequence Possible solution
Run Flat Indicator
inoperative
The Run Flat Indicator* is malfunc-
tioning or has been switched off due
to an error.
̈ Have the Run Flat Indicator* checked by an
authorized Mercedes-Benz Center.
Check tires
Then restart
Run Flat Indicator
There was a warning message about
a loss in tire inflation pressure and
the Run Flat Indicator* has not been
reactivated yet.
̈ Make sure that the correct tire inflation pressure
is set for each tire.
̈ Then reactivate the Run Flat Indicator*.
Tire pressure
Check tires
The Run Flat Indicator* indicates
that the pressure is too low in one or
more tires.
̈ Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers. Observe
the traffic situation around you.
̈ Check and adjust the tire inflation pressure as
required (
୴ page 290).
̈ If necessary, change the wheel (୴ page 377).
̈ Reactivate the Run Flat Indicator* after adjusting
the tire inflation pressure values (
୴ page 293).
Warning! G
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle.
You may lose control of the vehicle. Contin-
ued driving with a flat tire will cause exces-
sive heat build-up and possibly a fire.