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Home >> BMW >> 2013 >> 528i >> Repair and Diagnosis (Single Page) >> General Information >> OEM General Information >> Functional Description - F10 - Charging System, Anti-Theft System, Body Electrical System >> Body Electrical System - Functional Description >> Brake light switch >> Structure and inner electrical connection

Structure and inner electrical connection

The Hall IC and magnet are arranged in a fixed position in the switch housing. No restoring force for the brake light switch has to be applied by the brake pedal.

The Car Access System (CAS) supplies the brake light switch with voltage (terminal 30B).

Fig 1: Car Access System - Circuit Diagram
G09908143Courtesy of BMW OF NORTH AMERICA, INC.
Index Explanation
1 Hall effect sensors
2 Electronic component
PIN REFERENCE

Pin Explanation
Terminal 30B Terminal 30B, base operation
SIG1 Hall effect sensor signal 1
SIG2 Hall effect sensor signal 2
Kl. 31 Earth connection