This is topic How to diagnose rear window defroster? in forum Tech Talk at Northern California Ford Owners  .


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Posted by SydeWaySix (Member # 3596) on :
 
How can I determine if my rear window defroster is working? The switch on the dash lights up when I press it, but the actual defroster on the rear window doesn't work. Does anyone know how I can diagnose this? Any common causes that I can check on that may solve this issue? Thanks!
 

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Posted by NEIGHT (Member # 8741) on :
 
I have the same problem too, I ride around with frozen windows in the morning to work. lol
 

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Posted by Blind (Member # 3052) on :
 
the rear defrost is just a wire grid, on each side of the window is a connector that hooks up to that grid. Make sure it's plugged in on both sides then take a test light and tap into one of them when you turn it on, if it lights up its good to that point, if not there's a break in the wires going to the window or on the window grid itself.
 

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Posted by SydeWaySix (Member # 3596) on :
 

quote:

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Originally posted by Blind:
the rear defrost is just a wire grid, on each side of the window is a connector that hooks up to that grid. Make sure it's plugged in on both sides then take a test light and tap into one of them when you turn it on, if it lights up its good to that point, if not there's a break in the wires going to the window or on the window grid itself.

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Thanks, I'll try to test it with a test light
 

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Posted by JZTRK (Member # 7641) on :
 
a volt meter would work too
 

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Posted by 87coupe510 (Member # 6150) on :
 
I have the same issue!! Right on for starting this thread Ian! haha
 

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Posted by wilber650 (Member # 10360) on :
 
Alot of the times is cause some has broken one of the lines... Or juss bad connections.. Like my boys got ruined when he got the car tinted.
 

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