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Frequently asked questions about cars and motorcycles

Where are the Relays in the Mercedes M-Class?

Model: Mercedes Classe M W163 - Years 1997-2005
Part: Fuse box

This video shows where the relays are located in the Mercedes M-Class, which you can consult if a device is malfunctioning and you want to check the respective relay. The first group can be found in the fuse box inside the cabin, precisely at the junction between the dashboard and the centre tunnel. The second and final group of relays is located in the engine compartment, in the box near the battery on the driver's side. If a relay is faulty, ensure you use a replacement with the same specifications.

Updated on 11 June 2026 by ScegliAuto

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