Originally Posted by
amx1397
your fuel gage COULD be the rcm (Mercedes k40) replace that first as for the ring it has two wires behind it one may be disconnected it is programed to the key fob ,,call Rob at Needswings,com he has the fix.
How does the RCM have any affect on the fuel gauge? The fuel level sensor is in the fuel tank, I guess a fuse is in the circuit as well.
He says the ring is loose and says nothing about the wires, presumably the car starts or he would have said so.
He would be better of looking at the Service Manual, for which a PDF can be found in the Documentation Collection.
It can be found in the TSBs and How To section. He can download and save it for future reference.