I have 1999 e320 and have been experiencing same problem of "Light defective ' coming on on the dash board. What I discovered is the death of some bulbs. Because of this, my trafficator speed is a bit faster. My back license plate light bulb and the bulbs that come on when the doors are opened are gone as well. Check all your lights and see if this works. All the best. I am not a mechanic. All the best.
Defective computer these vans are known for this
on those model it is most of the time a sansor somewhere that is defective. clean or replace. you will need a diagnostic to know wich one.
how to change headlight on 1999 Mercedes e350
Brake light switch out of adjustment or defective
Defective or misadjusted stop light switch?
Alternator defective, or alternator belt broken or slipping.
why do check engine light comes on
Where is right brake light fuse on a 1999 Mercedes E320? Thank you.
most likely a speed sensor,be it dirty or defective ,hard to know which one it is
It means your brake pads need changing.
Brake light switch on the brake pedal is defective
The light means low oil pressure. It can be you installed the wrong filter or the filter is defective. It can mean the oil pressure sending unit is defective and it can also mean the oil pump is failing.