BMW 2011 328i Convertible Manual Do Proprietário

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Technology for driving comfort and safety
92
Drive-off assistant
The drive-off assistant enables you to drive off 
smoothly on uphill gradients. It is not necessary 
to use the parking brake for this.
1.
Hold the car in place by depressing the 
brake.
2.
Release the brake and drive off without 
delay.
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 
assistant will no longer hold the car in place 
after approx. 2 seconds and the car will start to 
roll backwards.
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Flat Tire Monitor FTM*
The concept
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.
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.
Each time a tire inflation pressure has been cor-
rected or a wheel or tire has been changed, 
reinitialize the system.
System limitations
It is impossible to provide advance warn-
ing of sudden, severe tire damage caused 
by outside influences.
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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:
>
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
>
Driving with snow chains
*
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.
Online Edition for Part no. 01 41 2 604 619 - © 02/10 BMW AG