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CONTROLS Technology for driving comfort and safety
72
sponding wheel change. This is detected and
reported as a flat tire.
Functional requirement
The system must have been initialized while the
tire inflation pressure was correct; otherwise,
reliable signaling of a flat tire is not ensured.
Initialize the system after every correction of the
tire inflation pressure and after every tire or
wheel change.
System limitations
Sudden serious tire damage caused by
external influences cannot be indicated in
advance.<
A natural, even pressure loss in all four tires can-
not be detected. Therefore, check the tire infla-
tion pressure regularly.
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
> Snow chains are attached
When the vehicle is driven with a space-saver
spare tire
*, page 216, the Flat Tire Monitor can-
not function.
Status display
The current status of the Flat Tire Monitor can be
displayed on the Control Display, e.g. whether or
not the FTM is active.
1. "Vehicle Info"
2. "Vehicle status"
3. "Flat Tire Monitor"
The status is displayed.
Initializing the system
The initialization process adopts the set inflation
tire pressures as reference values for the detec-
tion of a flat tire. Initialization is started by con-
firming the inflation pressures.
Do not initialize the system when driving with
snow chains.
1. "Vehicle Info"
2. "Vehicle status"
3. "Reset"
4. Start the engine, but do not start driving.
5. Select "Reset" to start the initialization.
6. Start to drive.
The initialization is completed during driv-
ing, which can be interrupted at any time.
When driving resumes, the initialization is con-
tinued automatically.<
Online Edition for Part no. 01 40 2 607 388 - © 03/11 BMW AGOnline Edition for Part no. 01 40 2 607 388 - © 03/11 BMW AG
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