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Check Electric Actuator Malfunction

Model: Mercedes Classe E W211 - Years 2002-2009
Part: Onboard computer

If many of the electric actuators in your vehicle (power seat adjustment, power windows, radio, etc.) are not working, it is likely an electronic failure of the control unit that manages their power supply: this is the SAM module (there is one in the front and one in the rear); it is a very common issue in Mercedes vehicles, as this module houses various relays and fuses and is located near the water drains: if water cannot drain properly, these modules can become irreparably damaged and will need to be replaced.

Updated on 19 February 2026 by ScegliAuto

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