A0315451732 Mercedes-Benz W220 SAM Control Module 05045124 – OEM Used & Tested

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OEM reference A0315451732, Bosch supplier number 05045124. Genuine used Mercedes-Benz W220 SAM Control Module — tested prior to listing.

This SAM unit — Signal Acquisition and Actuation Module — serves as the primary power distribution and body control centre for these Mercedes-Benz vehicles. It houses the main fuse matrix and relay array for the vehicle body circuits, managing power distribution and signal routing for exterior lighting (headlights, taillights, fog lights), windscreen wipers and washers, horn, electric windows, and numerous other body and chassis functions. Front and rear SAM variants exist — confirm which is required. The module communicates with the instrument cluster, engine management and comfort systems over the vehicle CAN bus.

Fuses that blow and immediately re-blow upon replacement — a strong indicator of SAM failure; multiple vehicle functions becoming unresponsive simultaneously (lighting, wipers, electric windows); fault codes appearing under the SAM module address when read with Star Diagnosis; loss of CAN bus communication to the SAM; or multiple unrelated dashboard warning lights illuminating together.

Good used condition. Always cross-reference BOTH OEM numbers (vehicle OEM and Bosch/supplier number) with your specific vehicle and build date before ordering — SAM variants differ between model years, body configurations and optional extras. Professional installation is required. The replacement SAM must be configured and coded to the vehicle using Mercedes-Benz Star Diagnosis (XENTRY or SIM/DAS). 14-day return window applies to unmodified parts only.