Question about 2004 Kia Optima

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Rear window defroster

The rear window defroster does not work at all. No lights .. nothing

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Did you check the fuse? i really don't know that much about kia's.

Posted on Aug 06, 2008

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1 Answer

Rear window defroster not working


Check obvious things first, fuses. Pull out your manual and look for locations. Second, there should be 2 wires going to the grid on the rear window defroster. Make certain they are still plugged in and the tabs have not been broken off, frequently happens at car washes when washing rear window. Third, take a close look at the grid of wire on the glass, looking for scratches. If scratched, you may be able to repair with a rear window defogger kit from your local auto store

Feb 06, 2015 | 2011 Ford Edge

2 Answers

I have a 1999 lincoln continental and the rear window defroster will not defrost the button lights up but nothing ever happens.


check the heating element (the metal traces on the window) for breaks. a break will cause the circuit to not be complete and power will not flow. if you find a break, there is repair kits for it at auto parts stores. also check fuses. just because the indicator lamp is illuminating does not mean that power is making it to the back of your vehicle.

Jan 28, 2012 | 1999 Lincoln Continental

1 Answer

Rear defroster lights up, but does not defrost, also very weak car radio reception.


Between the rear passenger window and the back window is a junction where rear defrost wiring and radio antenna connect. Rear defrost wiring becomes loose and burns this unit out. when looking for replacement at salvage yard everyone of them I found had burned up. Lots of La Sabres w/o working rear defrost. I made solid connections for defroster, and added an antennae, not much point in repeating a system that will fail again.

Jun 23, 2011 | 1997 Buick LeSabre

1 Answer

I have a 2003 Alero, replaced relay switch and fuse under the bonet for the rear defrost, all wires hooked up...no lines broke.. rear defrost button lights up , but rear defrost dont work. Are there any...


There is a connector going to rear defrost on the rear window. Disconnect this and check for voltage with defrost on. If this is good, check resistance for the connection to window. This will tell you if the electrical is working or the element is bad for the window if there is a open reading on multimeter.

Dec 03, 2010 | 2003 Oldsmobile Alero

2 Answers

2002 Cavalier - The rear defrost just quit. The light is still on but nothing. Where would I check the fuses or would it be wiring if the light is still on?


I'd guess that if you look closely, and it would have to very closely, you'll see that there might be a break in the "wires" on the window.

Dec 10, 2009 | 2002 Chevrolet Cavalier Coupe

1 Answer

I have a 2002 Corolla GS. Rear window defroster not working


The main cause for the rear window not working is a disconnected wire at either side of the defroster grid. You can see where the body harness connects to the rear glass.

The second most liekly cause are broken defroster grid wires.

I would suggest to you to obtain a 12 volt DC testlamp, and check for voltage as follows, at the rear defroster.

Hook the clamp of the testlamp up to a known good ground. The back door latch 'hoop' is great. Next, turn on the rear defroster, and place the point of the tip on the extreme side of the back window, on the grid. Does it the tester light up bright? If not, try the other side.

The light, moving across the grid, should get noticeably dimmer, if the grid is functioning properly. The light will go out when you encounter a broken grid wire..

Dec 03, 2009 | 2005 Toyota Corolla

2 Answers

Where is relay and fuse for rear window defrost


Where is relay and fuse for rear window defrost

Nov 29, 2009 | 2000 Chevrolet Impala

1 Answer

Rear defroster not working


check your fuses first,with a test light,then if you have power there take your test light and turn on the rear defroster and probe the wires that connect to the rear defroster in the rear window.if you have power there it is a faulty defroster in the glass

Nov 23, 2009 | 2001 Pontiac Grand Am SE

1 Answer

Rear defrost is not working


Take your vehicle to the garage who would inspect the car circuit.

Jan 07, 2009 | Infiniti G35 Cars & Trucks

1 Answer

Rear defrost


If you visually inspect the wires on the rear window do you see any breaks in the grid?

If so, read the following link:

http://www.popularmechanics.com/automotive/how_to/1272291.html



Oct 29, 2008 | 1995 Mazda MX-3

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