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Operation
Tires and wheels
Reactivating the Run Flat Indicator
The tire inflation pressure monitor must be
reactivated in the following situations:
ț If you have changed the tire inflation
pressure
ț If you have replaced the wheels or tires
ț If you have installed new wheels or
tires
̈ Using the tire placard on the driver’s
door B-pillar (
୴ page 503) or, if avail-
able, the inside of the fuel filler flap
(
୴ page 489), make sure the tire infla-
tion pressure of all four tires is correct.
̈ Switch on the ignition (୴ page 315).
̈ Press ( or & to select the menu
“Service”.
̈ Press $ or % to select “Tire
pressure”.
̈ Press #.
The message
Run Flat Indicator
active
Reactivation possible: OK
appears in the multifunction display.
̈ Press #.
The message
Tire pressure
now OK?
appears in the multifunction display.
Warning! G
The Run Flat Indicator does not provide a
warning for wrongly selected tire inflation
pressures. Always adjust tire inflation pres-
sure according to the placard on the driver’s
door B-pillar or fuel filler flap.
The Run Flat Indicator does not replace reg-
ular checks of the tire inflation pressures
since a gradual pressure loss in all four tires
cannot be detected by the Run Flat
Indicator.
The Run Flat Indicator is not able to issue a
warning due to a sudden dramatic loss of
tire inflation pressure (e.g. tire blowout
caused by a foreign object). In this case
bring the vehicle to a halt by carefully apply-
ing the brakes and avoiding abrupt steering
maneuvers.
Warning! G
The Run Flat Indicator can only warn you in
a reliable manner if you have set the correct
tire inflation pressures for each tire.
If an incorrect tire inflation pressure was
set, the system will monitor the pressure ac-
cording to the incorrect value.
i
The menu overview can be found on
(
୴ page 243).