It's on the forward curve of the left inside fender well .

You can take it apart and ever so gently & carefully clean and burnish the contact points.....

I've never had one I couldn't fix yet, they're $pendy new but plentiful & cheap in junkyards .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better