rear window heater

**chris1804** · 15th October 2009, 22:27

my rear window dont seem to de-mist when i press the button the light comes on but it dont de-mist any ideas? i didnt think it was the fues because light still comes on

**Rapala** · 16th October 2009, 01:33

Check the 40 amp fuse in position F4. Fuse box in the boot

**chris1804** · 16th October 2009, 10:32

yep no fues in F4, i thought if there aint a fuse in the button wouldnt light up?

**Signumv6man** · 16th October 2009, 19:31

Originally Posted by chris1804

yep no fues in F4, i thought if there aint a fuse in the button wouldnt light up?

The 40A supply fuse is the main supply to the heater, switched by the relay, the switching and control of that relay (including the illumination of the switch) is most likely on another circuit.

Hope that helps.

**chris1804** · 16th October 2009, 20:57

yep all works now had to take fuse out for electric seats (my model dont have it) and all works now,

**L33AVN** · 3rd October 2015, 20:35

Must have been a factory problem. .... my vec was the same. Wasnt until we had to change the stereo fuse that we noticed it and though 'we don't have electric seats??!!?' We always thought it was just that the window heater wasn't the best ��