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Home >> BMW >> 2019 >> X3 M40i >> Repair and Diagnosis >> External Pages >> Different car >> Section 576 (Functional Descriptions - F25 - Charging System, Anti-Theft, Body Electrical Systems) >> Body Electrical System - Functional Description >> Driver assistance system operating facility with hazard warning switch >> Structure and inner electrical connection

Structure and inner electrical connection

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The assist system operating facility is connected to the vehicle electrical system by means of a 6-pin plug connection. The LIN bus connects the operating facility of the assist system with the Body Domain Controller (BDC).

The power distribution box on the Body Domain Controller (BDC) supplies the driver assistance system operating facility with terminal 30F.

Fig 1: Function Indicator Light - Circuit Diagram
G09908821Courtesy of BMW OF NORTH AMERICA, INC.
Item Explanation
1 Assist systems operating facility
2 Driver assistance system operating facility button
3 Function indicator light button of driver assistance system operating facility
4 Hazard warning switch
5 Function indicator light of hazard warning switch
PIN REFERENCE

Pin Explanation
Terminal 30F Shutdown of terminal 30F in event of failure
Kl. 31 Ground connection (Terminal 31)
LIN LIN bus
SIG Signal, hazard warning switch
SIG2 Signal of function indicator light
1 pin not used.