Dr.Strangelove
Member
My Instrument backlighting not always on is this a fault? 1st time I noticed it not lit up was driving back Mercedes service after having the auxiliary (stop start) battery replaced under warranty due to a malfunction error flashing up on the dash, it was off then lit up a mile or so into the journey home. Since then it is sometimes lit, sometimes not. It's alway ok at night so maybe it's supposed to be like that and has a sensor.