Contents Wiring diagrams Section: Central Body Electrics - Overview All sections

System Operation BMW M3 E46

Central Body Electrics - Overview 1 illustration ~102 words

System Operation

The seat adjusting switch block communicates with the control module over dedicated lines. The output stages for seat motor movement are in the control module. The seat positions are recognized through the use of hall sensors on the motors. All components of the seat memory system are monitored for faults.

Additional functions of the memory system include memorizing the position of the seat and headrest when the entry aid feature is activated. The seat will return to its previous set position when the entry aid switch is pressed rearward or the seat back rest is locked.

Scheme 70

Scheme 70: Memory Seat IPO