Bmw M3 Convertible 2009 Bedienungsanleitung PDF herunterladen (Seite 86)

Technology for driving comfort and safety

> "Sport": both LEDs light up.

Each time the engine is started, the program set

for the remote control in use is active, refer to M

Key settings on page 51.

You can also set and call up your preferred

program via MDrive, refer to page 50.

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.<

Flat Tire Monitor FTM*

The concept

The Flat Tire Monitor detects pressure loss in a

tire by comparing the rotating speeds of the

individual tires while moving.

In the event of pressure loss, the rolling circum-

ference changes and, thus, the rotating speed

of the affected wheel. This change is detected

and is reported as a flat tire.

Functional requirement

In order to assure the reliable reporting of a flat

tire, the system must be initialized for the cor-

rect tire inflation pressure.

The system must be reinitialized each

time a tire inflation pressure has been cor-

rected or a wheel or tire has been changed.<

System limitations

The Flat Tire Monitor is unable to warn

the driver of sudden, severe tire damage

caused by external factors, nor can it identify

the gradual loss of pressure that will inevitably

occur in all four tires over a lengthy period of

time.<

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

Initializing the system

The initialization is completed during driv-

ing, which can be interrupted at any time.

When driving resumes, the initialization is con-

tinued automatically.

Do not initialize the system while snow chains

are attached.<

Using the button in the center console

1. Start the engine, but do not start driving.

2. Press the button for approx. 4 seconds until

the warning lamp in the instrument cluster

lights up yellow. Warning lamp, refer to Indi-

cation of a flat tire on page 85.

3. Start to drive.

Initialization is completed while the car is

moving, without any feedback.

Via iDrive

iDrive, for operating principle refer to page 16.

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