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a corresponding warning message will appear in
the multifunction display.
You can recognize the tire pressure loss warning
by the Run Flat Indicator Active PressRun Flat Indicator Active Press
'OK' to Restart'OK' to Restart message which appears in
the ServiceService menu of the multifunction display.
Information on the message display can be
found in the "Restarting the tire pressure loss
warning system" section (Y page 359).
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 355).
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 pres-
sure 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 vehi-
cle 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 355).
X
Make sure that the SmartKey is in position 2
in the ignition lock (Y page 140).
X
Press the = or ; button on the steering
wheel to select the ServiceService 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 pres-
sures of all four tires.
If you wish to cancel the restart:
X
Press the % button.
or
X
When the TireTire PressurePressure NowNow OK?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
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 mon-
itor warns you if the pressure drops in one or
more of the tires. The tire pressure monitor only
functions if the corresponding sensors are
installed in all wheels.
Tire pressure
359
Wheels and tires
Z
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