Re: 156 JTS Rear window demister not working..........but what fuse ?
When you push the button, you should be able to hear a faint click from the relays. If there is no click - remove glovebox and unplug/replug the connectors from the relaybox. Could also help to wiggle the connectors at the back of the fusebox.
EDIT: Also worth checking is the 10A fuse marked services (middle one, top row)
EDIT2: Also check your battery and charging voltages, battery should be ~12v, and with engine on it should be 13,8v-14,4v.
Also what year is the car?
Last edited by NiTRoGuY; 30-08-06 at 13:19.