I'm having some issues with the ambient lights on the driver's side door and the left rear side (they don't work). The strange thing is that the central part, dashboard, passenger side and right rear side do work. Does anyone know where the fuse for the ambient lights is? or anyone know what is the problem?

 

Take it to the dealer, unless no longer under warranty no reason to look into it yourself.

 

I don’t think it’s a fuse. It’s some kind of comms issue with the program going out to the LEDs that drive the lights. On our ‘21 GLB250 one or more of the air registers would randomly go black. The dealer fixed it on a routine maintenance visit (ours was sold with PPM included) after mentioning it to the service advisor and it hasn’t been back.