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The system must be reinitialized each
time a tire inflation pressure has been cor-
rected or a wheel or tire has been
System limitations
The Flat Tire Monitor is unable to warn
the driver of sudden, severe tire damage
caused by external factors, nor can it identify
the gradual loss of pressure that will inevitably
occur in all four tires over a lengthy period of
time.<
In the following situations, the system could be
delayed or malfunction:
>
System has not been initialized
>
Driving on snowy or slippery road surface
>
Performance-oriented style of driving: slip
in the drive wheels, high lateral acceleration
>
If snow chains are attached
Initializing the system
The initialization is completed during driv-
ing, which can be interrupted at any time.
When driving resumes, the initialization is con-
tinued automatically.
Do not initialize the system while snow chains
are
attached.<
iDrive, for operating principle refer to page 16.
1.
Press the
button.
This opens the start menu.
2.
Press the controller to open the menu.
3.
Select "Vehicle settings" and press the
controller.
4.
If necessary, move the highlight marker to
the uppermost field. Turn the controller
until "FTM" is selected and press the con-
troller.
Online Edition for Part no. 01 41 0 012 346 - © 05/06 BMW AG
5.
Start the engine, but do not start driving.
6.
Select "Reset" and press the controller.
changed.<
7.
Select "Yes" and press the controller.
8.
Start to drive.
Initialization is completed while the car is in
motion. "Status: FTM active" reappears in
the Control Display.
Indication of a flat tire
tire or substantial loss of tire pressure.
1.
Cautiously reduce speed to below 50 mph
or 80 km/h. Avoid sudden braking and
steering maneuvers. Do not exceed a speed
of 50 mph or 80 km/h.
dard equipment by design, do not continue
driving. Otherwise a severe accident could
result after a tire puncture if you continue
driving.<
2.
At the next opportunity, check the air pres-
sure in all four tires.
might not have been initialized. The system
must then be
3.
In the event of complete tire pressure loss,
0 psi/0 kPa, you can estimate the possible
The warning lamps come on in yellow
and red. A message appears on the
Control Display. In addition, an
acoustic signal sounds. There is a flat
If the car is not equipped with Run-
Flat Tires, refer to page 189, the stan-
If all four tires are inflated to the cor-
rect pressures, the Flat Tire Monitor
initialized.<
83
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