The relay for the heated rear screen on a Golf MK4 should be just below the heater controls on the dash. Look for a button that says rear defrost or something to that effect.
if the switch lights up then check to see if the metal connectors and strips on the rear window are ok if they are then i would say the rear screen relay is broken.
the heated rear screen circuit has a higher resistance compared to the side light circuit
To find the rear heated screen relay open the bonnet, and on the passenger side near the windscreen there is a plastic flap if you open it you will see a fuse block , If you look behind that box there is another enclosed box which houses seperate relays for the rear screen and the indicators. To get access to this box requires removal of the indicators and plastic scuttle below the windscreen.Once you have done this you need to remove four torx screews to open the casing to access the relays. To replace the plastic scuttle you need to re-seal it to the winscreen.
maybe the switch is broken or the fuse/relay has gone??
At the rear of the fuse box there are 2 relays the same that are yellow ,one relay does the wipers and the fan blowers, the other is for the heated rear window..
According to "Relay Locations" in the Bentley manual, the heated rear window time delay relay is located behind the right side of the center console.
the relay is in the tail gate as it also controls the rear screen wipers
rear window wiper perhaps? That's what it is on a 96 Golf
its in the middle of your fan switch,just pull it out
Chrysler uses that abbreviation for "electric back light" which is what they call a heated rear window defroster.
In the fuse box under the rear seat. Pull the seat up from the front (2 clips behind each of the front seats) and remove. Don't forget about the seat's electrical connector on the passenger side if you have heated read seats. The fuse box in on the drivers side of the vehicle. The 'Run' relay (position number 3) is the heated seat relay.
The button for the fuel relay switch is on a 1976 Golf is on the driver side rear 1/4 panel about 6" to the front from of the left tail lite. It looks like a button to hold the carpet on the rear 1/4 panel.