Operation CHARM
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BMW
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2009
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Z4 sDrive30i (E89) L6-3.0L (N52K)
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Repair and Diagnosis
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Accessories and Optional Equipment
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Towing / Trailer System
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Trailer Hitch
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Trailer Hitch Control Module
Trailer Hitch Control Module
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Description and Operation
Trailer Module and Trailer Coupling Release, Functional Description
Trailer Lighting (AHM Trailer Module or AHM3+Trailer Module With Boosted Power or AHM4 Trailer Module 4)
Trailer Module and Trailer Coupling Release, Functional Description
Power Supply, Footwell Module FRM
FRM Footwell Module
Fault Profile 6: FRM Footwell Module (USA_LHD)
Fault Profile 8: FRM Footwell Module (Door Mirror With LIN Bus)
Supply, AHM Trailer Module
Trailer Detection (PDC Park Distance Control)
Testing and Inspection
Trailer Module: Currently Known Fault Patterns
Power Supply, Footwell Module FRM
Fault Profile 2: RLS Rain/Light Sensor (RLSS Solar Rain/Light Sensor)
Fault Profile 3: RLS Rain/Light Sensor (RLSS Solar Rain/Light Sensor)
Fault Profile 1: Reversing-Light Switch (Without EGS 6HP/6HPTU/GM6 Transmission Control)
Description and Operation
Testing and InspectionDescription and OperationTesting and Inspection