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Description

C250 Door Switch (Mercedes-Benz) Function: The door switch detects whether the door is open or closed and sends this info to the car’s electronics to control: Interior dome lights • Door ajar warnings on the dashboard • Central locking system • Alarm system activation/deactivation Location: • Usually in the door frame near the latch or inside the door latch mechanism • Can be: • Plunger-type button • Magnetic/proximity sensor (newer models) Symptoms of a Faulty Door Switch: 1. Interior lights stay on even when the door is closed 2. Door ajar warning stays on 3. Central locking malfunctions 4. Alarm system false-triggers or fails to arm 5. Trunk/boot sensor issues (if integrated) Replacement Tips: • Use OEM replacement for proper compatibility • Disconnect the battery