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rotation of a wheel changes as a result of a
loss of pressure, a corresponding warning
message will appear in the multifunction dis-
play.
You can recognize the tire pressure loss warn-
ing by the Run Flat Indicator ActiveRun Flat Indicator Active
Press 'OK' to RestartPress 'OK' to Restart message in the mul-
tifunction display in the Serv.Serv. menu. Informa-
tion on the message display can be found in
the "Restarting the tire pressure loss warning"
section (Y page 311).
Important safety notes
The tire pressure warning system does not
warn you of an incorrectly set tire pressure.
Observe the notes on the recommended tire
pressure (Y page 307).
The tire pressure loss warning does not
replace the need to regularly check the tire
pressure. An even loss of pressure on several
tires at the same time cannot be detected by
the tire pressure loss warning system.
The tire pressure monitor is not able to warn
you of a sudden loss of pressure, e.g. if the
tire is penetrated by a foreign object. In the
event of a sudden loss of pressure, bring the
vehicle to a halt by braking carefully. Avoid
abrupt steering movements.
The function of the tire pressure loss warning
system is limited or delayed if:
R
snow chains are mounted on your vehicle's
tires.
R
road conditions are wintry.
R
you are driving on sand or gravel.
R
you adopt a very sporty driving style (corner-
ing at high speeds or driving with high rates
of acceleration).
R
you are driving with a heavy load (in the
vehicle or on the roof)
Restarting the tire pressure loss warn-
ing system
Restart the tire pressure loss warning system
if you have:
R
changed the tire pressure
R
changed the wheels or tires
R
mounted new wheels or tires
X
Before restarting, make sure that the tire
pressures are set properly on all four tires
for the respective operating conditions.
The recommended tire pressure can be
found on the Tire and Loading Information
placard on the B-pillar. Additionally, a tire
pressure table is attached to the fuel filler
flap. The tire pressure loss warning system
can only give reliable warnings if you have
set the correct tire pressure. If an incorrect
tire pressure is set, these incorrect values
will be monitored.
X
Also observe the notes in the section on tire
pressures (Y page 307).
X
Make sure that the SmartKey is in position
2 in the ignition lock (Y page 125).
X
Press = or ; on the steering wheel
to select the Serv.
Serv. menu.
X
Press the 9 or : button to select
Tire PressureTire Pressure.
X
Press the a button.
The Run Flat Indicator Active PressRun Flat Indicator Active Press
'OK' to Restart'OK' to Restart message appears in the
multifunction display.
If you wish to confirm the restart:
X
Press the a button.
The Tire Pressure Now OK?
Tire Pressure Now OK? message
appears in the multifunction display.
X
Press the 9 or : button to select
YesYes.
X
Press the a button.
The Run Flat Indicator RestartedRun Flat Indicator Restarted mes-
sage appears in the multifunction display.
After a teach-in period, the tire pressure
loss warning system will monitor the set tire
pressures of all four tires.
If you wish to cancel the restart:
X
Press the % button.
or
X
If the Tire Pressure Now OK?
Tire Pressure Now OK? message
appears, press the 9 or : button to
select CancelCancel.
X
Press the a button.
The tire pressure values stored at the last
restart will continue to be monitored.
Tire pressure monitor (Canada only)
General notes
If a tire pressure monitor is installed, the vehi-
cle's wheels have sensors that monitor the tire
pressures in all four tires. The tire pressure
Tire pressure
311
Wheels and tires
Z
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