This is a genuine Mercedes-Benz SAM (Signal Acquisition Module) control unit, part number A2129005401, used in W207 (C207) E-Class Coupé and Cabriolet models (2011–2017) and compatible rear SAM modules from W212/E-Class series
Removed from a fully functional vehicle, it has been bench-tested to ensure proper relay activation, fuse distribution, and signal acquisition across rear systems (lights, locks, sensors). It may exhibit slight cosmetic marks but delivers full OEM performance.
✅ OEM part number: A2129005401 (alt codes: 212 900 54 01)
✅ Fits: Mercedes W207 E-Class Coupe/Cabriolet (2011–2017)
✅ Tested & fully operational – ensures reliable system control
✅ Condition: Used, genuine OEM module
✅ UK stock – fast dispatch, includes 30-day warranty
A malfunctioning SAM unit can cause electrical issues such as inoperative lights, door locks, or tailgate functions, and can trigger fault codes (e.g., C1xxx). Replacing this tested OEM module restores full electrical system integrity without dealer-level costs.
Benefits include:
Reliable OEM replacement
Ensures vehicle electronics function correctly
Cost-effective vs brand-new units
Ideal for DIY professionals and automotive workshops
Explore our other Mercedes control units (ECU, boot module, wiper control) for full system coverage on vazauto.co.uk.
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We do not assume any responsibility for fitting, exchanging, replacing, or repairing parts, nor for any delays that may occur. Please note that we specialize in selling used, second-hand car parts. Most of these parts have been tested before being listed on our store to ensure quality.
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- Cosmetic condition: Item is from used vehicle, condition as shown in pictures.
- Please check all pictures carefully before buying.
- We also have more parts from this vehicle.
