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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 >> Diagnosis instructions >> Failure of the component

Failure of the component

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On the assist system operating facility, it is only possible in principle for individual buttons to fail. If individual buttons fail, the following behavior is to be expected:

If the bus communication (LIN bus) between the driver assistance system operating facility and Body Domain Controller (BDC) is interrupted, the following behavior is to be expected:

A function check of the buttons can be run using the diagnosis system.

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