>
When driving uphill on snow-covered roads,
in slush or on unplowed, snow-covered
roads
assistant will no longer hold the car in place
after approx. 2 seconds and the car will start to
roll backwards.<
>
>
When rocking a stuck vehicle free or start-
ing off in deep snow or on loose ground
Flat Tire Monitor FTM*
When driving with snow chains
The concept
Activating DTC
The system does not measure the actual infla-
tion pressure in the tires.
The system detects a tire pressure loss due to
speed comparisons among the individual
wheels as you drive.
In the event of pressure loss, the rolling circum-
ference changes and, thus, the rotating speed
of the affected wheel. The system detects this
and reports it as a flat tire.
Press the button; the indicator lamps for DTC in
the instrument cluster come on.
Functional requirement
The system has to have been initialized at the
correct inflation pressure; otherwise, a reliable
reporting of a flat tire is not assured.
For better control
If the indicator lamp flashes:
DTC is regulating the drive and braking
forces.
Each time a tire inflation pressure has been cor-
rected or a wheel or tire has been changed,
reinitialize the system.
If the indicator lamps are on:
DTC has been activated.
System limitations
It is impossible to provide advance warn-
ing of sudden, severe tire damage caused
by outside influences.<
Deactivating DTC
Press the button again; the DTC indicator
lamps in the instrument cluster go out.
The system will not detect a natural, uniform
pressure loss in all four tires. Therefore you
should check the inflation pressure regularly.
In the following situations, the system could be
delayed or malfunction:
Drive-off assistant
The drive-off assistant enables you to drive off >
System has not been initialized
smoothly on uphill gradients. It is not necessary
to use the parking brake for this.
>
Driving on snowy or slippery road surface
>
Performance-oriented style of driving: slip
in the drive wheels, high lateral acceleration
1.
2.
Hold the car in place by depressing the
brake.
>
Driving with snow chains*
Release the brake and drive off without
delay.
Initialization
The drive-off assistant holds the car in
place for approx. 2 seconds after the
brake is released. Drive off without delay after
releasing the brake. Otherwise, the drive-off
In the initialization, the set inflation pressures
are adopted as reference values for the detec-
tion of a flat tire. The initialization is begun by
confirmation of the inflation pressures.
72
Online Edition for Part no. 01 41 2 604 079 - © 02/10 BMW AG
| Categories | BMW 1-Series Manuals, BMW Manuals |
|---|---|
| Tags | BME E81, BMW 128i, BMW 135i, BMW E82, BMW E87, BMW E88 |
| Model Year | 2011 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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