BMW 525xi Sedan 2006 User Manual
Page 92
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The initialization must be repeated after
each time the tire inflation pressure is cor-
rected and after every tire or wheel change.
<
System limits
The Flat Tire Monitor cannot indicate
sudden severe tire damage caused by
outside factors and does not detect a natural,
even pressure drop in all four tires.
<
In the following situations, the system could be
delayed or malfunction:
>
System has not been initialized
>
Driving on snowy or slippery road surface
>
Sporty driving style: slip in the drive wheels,
high lateral acceleration
>
Driving with snow chains
*
When you are driving with the compact wheel
*
the Flat Tire Monitor is unable to function.
Initializing system
The initialization finishes during driving,
which can be interrupted at any time.
When driving resumes, the initialization is con-
tinued automatically. Do not initialize the sys-
tem when driving with snow chains
*
or com-
pact wheel
*
.
<
iDrive, for explanation of principle, refer to
page
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.
Select "FTM" and press the controller.
5.
Start the engine, but do not start driving.
6.
Select "Set tire pressure" and press the
controller.
7.
Select "Yes" and press the controller.
8.
Start to drive.
The message "Initializing..." is displayed.
The initialization finishes during driving. Then
the message "Status: FTM active" appears on
the Control Display again.
Indication of a flat tire
The warning lamp lights up red. A mes-
sage appears on the Control Display.
In addition, an acoustic signal sounds.
There is a flat tire or extensive inflation pressure
loss.
1.
Reduce speed and stop the vehicle care-
fully. Avoid sudden braking and steering
maneuvers.
2.
Identify damaged tire.
If identification is not possible, con-
tact a BMW center.
<
3.
Replace the damaged wheel, refer to
Changing wheels on page
Run-flat tires*
1.
Cautiously reduce speed to below 50 mph/
80 km/h. Avoid sudden braking and steer-
ing maneuvers. Do not exceed a speed of
50 mph/80 km/h.
If the vehicle is not equipped with run-
flat tires, refer to page
, do not
continue driving. Continuing to drive with a
flat tire could cause severe accidents.
<
2.
At the next opportunity, check the air pres-
sure in all four tires.
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