>
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.
Drive-off assistant
In the following situations, the system could be
delayed or malfunction:
The drive-off assistant enables you to drive off
smoothly on uphill gradients. It is not necessary
to use the parking brake for this.
>
>
>
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
1.
Hold the car in place by depressing the
brake.
>
Driving with snow chains*
2.
Release the brake and drive off without
delay.
Status display
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
The current status of the Flat Tire Monitor can
be displayed on the Control Display, e.g.
whether or not the FTM is active.
82
Online Edition for Part no. 01 41 2 604 129 - © 02/10 BMW AG
| Categories | BMW 1-Series Manuals, BMW Manuals |
|---|---|
| Tags | BMW 128i, BMW 135i, BMW E81, BMW E82, BMW E87, BMW E88 |
| Model Year | 2011 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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