Mercedes-Benz M-Class Owners Manual

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Fuse box in the battery case
The fuses in the battery case do not usually need to be replaced. If a fuse change is necessary, consult a qualified specialist workshop. ...

Light switch
Operation Switch off the parking lamps and lowbeam headlamps when you leave the vehicle. This prevents the battery from discharging. If the battery has been excessively discharged, the parking ...

Fuse box in the transmission tunnel
Make sure that no moisture can enter the fuse box when the cover is open. When closing the cover, make sure that it is lying correctly on the fuse box. Moisture seeping in or dirt could otherwis ...