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Home >> BMW >> 2003 >> M3 2D Convertible >> Repair and Diagnosis >> Transmission >> Automatic Trans >> SMG II - Overview >> SMG II >> System Components >> SMG II Control Unit Inputs/Outputs >> SMG CAN Bus >> Brake Light Switch
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Brake Light Switch

Brake pedal status is transferred to the SMG II control unit via the DME. The signal is used for:

SIGNAL REFERENCE

Unlocking the shift lock Brake detection Engine Starting
Downhill detection Clutch Disengagement while stopped.
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