BMW 5 Series Owners & Service Manuals

BMW 5 Series: Seat belt buckle switch

The seat belt buckle switches are located in the seat belt buckles of the driver and front passenger seat. European version vehicles are additionally equipped with seat belt buckle switches on the rear seat bench.

The seat belt buckle switch detects whether the seat belt buckle tongue is in the seat belt buckle.

The supply of the sensors and the evaluation occurs through the ACSM. As of the driving condition RESIDING, the seat belt buckle switch is continuously monitored and used for the visual and acoustic seat belt warning and also to determine which restraint systems are to be triggered. The seat belt warning is active as of the DRIVING driving condition.

System Components
G30 Seat belt buckle switch

Emergency call button

The emergency call button is located in the roof function center.

System Components
G30 Roof function center (FZD) with emergency call button

  1. Emergency call button

Seat-position sensors

In accordance with the US legal requirement (FMVSS208), a height identification for the person in the driver and front passenger seat must be effected. This height identification is effected via the adjustment travel of the forward/back seat adjustment. In US-version vehicles, the exact position is identified using the seat-position sensors for the driver and front passenger seats.

The job of the seat-position detector is to distinguish between a relatively small person and a person of normal height within the lengthways adjustment range of the seat. This detection is another technical feature aimed at increasing the safety of the occupants. The deployment of the 2 airbag stages is then adjusted to the driver's/front passenger's seat position.

The seat-position detector takes the form of a 2-wire hall effect sensor and is supplied with voltage via the ACSM. The current level of the seat-position sensor changes depending on the seat position.

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     Actuators

    Overview The following actuators are installed in the G30: Two-stage driver's airbag Two-stage front passenger airbag Knee airbag on front left and right Head airbag on left and right Side airba

     Front passenger airbag

    The purpose of the front passenger airbag is to reduce the risk of accident to the front passenger in the event of a front-end crash. The front passenger airbag is located in the dashboard. When the

     Automatic tensioner with linear mechanical force limiter

    In the event of a front-end or rear-end crash or rollover, the automatic reel blocks the extension of the seat belt in order to restrain the occupants. The belt force limiter limits the load exerted

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     Adjusting

    Setting the language The language to be used for voice activation and system announcements can be set. Via iDrive: 1. "My Vehicle". 2. "iDrive settings". 3. If necessary, "Language". 4. "Language:". 5. Select the desired language. Setting the voice dialog You can set the system to use standard

     General information

    Navigation settings can be individually configured. Settings are stored for the driver profile currently used. Services Concept The vehicle offers different functions, whose use requires a data transfer to BMW or a service provider. The data transfer can be deactivated for some functions. General

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