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MBWorld (Mercedes) · June 23, 2026

Water Damage Affects Rear SAM Module in Various Vehicles

Water Damage Affects Rear SAM Module in Various Vehicles

Water damage to the rear Signal Acquisition Module (SAM) can cause malfunctions in various vehicle systems, including rear lights, rear wiper, fuel gauge, alarm, and trunk. This issue can affect certain models from Mercedes-Benz, BMW, Audi, Porsche, VW, Volvo, Jaguar, Lexus, Toyota, and Honda, including hybrids.

Water exposure, even minor, can lead to problems. The rear SAM module is sensitive to moisture, and damage can occur if the area is not properly inspected and dried. In some cases, replacing the SAM module may be necessary. Vehicle owners are advised to exercise caution when washing their cars, especially around the rear cargo compartment, and use gentle washing and drying techniques to protect sensitive electronics.

Source: MBWorld (Mercedes)

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