Hi

I have 2014 mk4 mondeo estate. The rear windscreen doesn't deforst I have changed the fuses, but still doesn't work, is there a relay that would need changing aswell, and where would I find it?

Also the front screen only heats up at the edges any ideas what I could do?

Thanks Martin

45 minutes ago, martin constable said:

The rear windscreen doesn't deforst I have changed the fuses, but still doesn't work, is there a relay that would need changing aswell, and where would I find it?

There is no relay for the heated rear window, it is operated by the Body Control Module (BCM) which is part of the passenger compartment fuesbox. There is a known issue on the 2013/2014 Mondeo of water ingress to the BCM from a faulty screenwash pump. It's possible you will experience other random electrical issues over the coming months if it is a BCM water problem.

The heated front has a left and a right side. If the problem is that you are only getting heating at the sides of the screen then the heating elements inside the glass have failed. The only fix is to replace the windscreen.