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