12 41 041 Replacing solenoid switch
WARNING: This page does not describe the selected car, but rather 21 other vehicles, including the 2017 BMW 550i GT xDrive, 2017 BMW 535i GT xDrive, 2017 BMW 535i GT, 2016 BMW 550i GT xDrive, and 2016 BMW 535i GT xDrive. However, it is still accessible from the selected car via links, so may be relevant.
Turn off ignition.
Remove starter motor.
Release nut (1).
Remove cable lug (2).
CAUTION:
Do not turn cable lug (2) while tightening down - risk of short circuit to starter motor housing.
Release screws (1).
Remove solenoid switch (1) and spring (2).
Unhook pin (3).
Installation:
Check pin (3) for wear and apply grease.