Alex Crow
Senior Member
- Joined
- Jul 9, 2009
- Messages
- 10,677
- Reaction score
- 48
- Location
- Super Suffolk
- Your Mercedes
- W169, W124, w202, W203, KTM 250 EXC, VW T25 camper and a Polo in a pear tree
Right, Ive just removed relay L and checked for voltage. I have batt voltage on the middle pin of the relay which is numbered 5 but nothing on any other pins. Ive checked the other relays which are the same part number and have batt voltage on pin 5 and pin 1. So im assuming the pin 1 is the problem with no voltage. Ive checked F78 and F33 and have 12v both sides of the fuses and have 12 v on F42 but it doesnt appear to have a fuse for F34 :neutral:
The terminology "F33f78" refers to fuse number f78, mounted in the rear fuse box F33 (in MB speak, note upper/lower case f).
Please tell us the terminal name on the relay (eg 87, 30, 87a etc) where power is missing. You will find a diagram on the side btw.