Rear window defroster
 

Hello all!
The problem I have is that the rear window defroster does not really work. The reason I say doesn't really work is that it will defrost a feww inches from the bottom and thats it! Does thins mean if I want it to work I have to replace the entire back window? Any insights?

Oh, it might help if you knew the car! 1991 190E 2.3

The heat paint buss is probably not continuous, could be on either side and in more than one place; usually from a scratch. It can be repaired using conductive paint sold for that purpose at autoparts stores.

Oh, I see...what's a heat paint buss? Is that the actual element on the window?

Still trying to figure it out!
 

Looked the rear window over and everything looks in order. Not that I would really know exactly what to look for but it looks ok. Any suggestions on what I might try to get it to work? Thanks!