rear defogger?
Thread Starter
Melting Slicks
Joined: Sep 2004
Posts: 3,024
Likes: 18
From: DFW Texas
rear defogger?
I tried my rear defogger a few days ago, and it was the first time I used it since I got tinted glass put on.
It seemed to work just fine for a couple of days, then all of a sudden, it doesn't work anymore. The light on the center stack comes on, but it does not rid the rear of frost/dew.
Ideas? Where is the fuse for it? Would the window tinting have anything to do with it not working?
Thanks
It seemed to work just fine for a couple of days, then all of a sudden, it doesn't work anymore. The light on the center stack comes on, but it does not rid the rear of frost/dew.
Ideas? Where is the fuse for it? Would the window tinting have anything to do with it not working?
Thanks
Tech Contributor
Joined: Dec 2003
Posts: 19,384
Likes: 87
From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
Has the tint been fitted recently?
Could the tinters have damaged the element? If they nicked it, the first use could hae been enough to cause a failure.
Could the tinters have damaged the element? If they nicked it, the first use could hae been enough to cause a failure.
Drifting
Joined: Oct 2003
Posts: 1,540
Likes: 0
From: bloomfield nj
if it worked prior to the tint,1 of 2 things happened.either you have a bad connection on the sides of the glass or 1 of the grids got cut.more than likely it is a connection if the whole glass is out.
Thread Starter
Melting Slicks
Joined: Sep 2004
Posts: 3,024
Likes: 18
From: DFW Texas
The guys that tinted it assured me they would not harm the element. There is static on the AM radio there didn't use to be, but hear that is common especially with metalic film.
Some tinters even sand the dots up top for a better fit. They didn't do that either as they came back a week or so later and put on some black vinyl up close to the top where the tint didnt' stick all that well.
Can it be tested with a volt/ohm meter to see if the element is still good? Should there be 12v to each side of the rear hatch plugs, or is one + and the other - ?
Some tinters even sand the dots up top for a better fit. They didn't do that either as they came back a week or so later and put on some black vinyl up close to the top where the tint didnt' stick all that well.
Can it be tested with a volt/ohm meter to see if the element is still good? Should there be 12v to each side of the rear hatch plugs, or is one + and the other - ?
Drifting
Joined: Oct 2003
Posts: 1,540
Likes: 0
From: bloomfield nj
correct,1 side should be 12 volts and the other ground,but what you want to see is the voltage drop across the glass,which is hard now with the tint.turn the defogger on and feel to see if the glass gets hot.also look at the orange led on the switch,if the glass grid is working,the led will go off after awhile and the glass will be warm.
