Rear Window Defroster Not Working

In this video series I go through the process of diagnosing and repairing a rear window defroster that will not work.

Rear window defroster not working. In this video we. The shield has locking tabs every couple of inches that will need to be released to reveal the wiring. Reasons your rear defroster doesnt work. 2009 - 2014 Ford F150 - Rear defroster not working - So i get in my truck this morning go to hit the rear window defroster button and it fails to come on.

You could see how they had a different color to them this breaks the contact points and causes it not to work i would start by looking there other than you could probobly get an electrical tester and make sure its actually getting juice to the contacts. Is this a common problem. The wires that attach to the rear defroster tabs. In this case all of the horizontal defroster grid lines would need to be broken and it is very unlikely that this would happen without it being immediately obvious.

Discussion Starter 1 Jul 7 2018 Edited I have a 1993 corolla dx that the rear window defroster isnt working. You will see a black plastic shield around the edges of the defroster grid. Located the largerheavy gauge wire Purple in color Probed it and found no power. Joined Jan 11 2018 83 Posts.

When the rear defroster does not work at all small breaks in the horizontal grid can be eliminated as the problem. Discussion Starter 1 Jan 17 2018. Rear Window Defrost Not Working. Rear Defroster not working.

There is a tab on each side. If your window has a defroster grid the only thing that should ever touch the glass is a soft cloth dampened with window cleaner. This video shows how to test the rear defroster defogger system on a BMW E46 3 Series. Disconnect the wire closest to the passenger side of the car and attach the test lamp clip to the wire not the little metal tab attached to.

If it doesnt check for a bad fuse and replace it if necessary. I have tried locating the rear defroster tabs but I cant find them. Check to make sure the tabs are secured to the edge of the grid. When I push the defroster button the light comes on but rear defrost doesnt seem to be.

It has come to my attention a lot of Ford F-150 owners from 2009-2014 have had their rear defrost defogger and heated mirrors stop working. Joined Jul 31 2004 3991 Posts. Rear defroster not working Oct 09 2014 1011pm I have an 07 silverado and my rear defroster is not working my mirror defrost works i checked the voltage at the tab on window its 0 volts so i unpluged the conector on the drivers side Stuck my volt meter positive end in and the neg against the door striker it reads about 1 to 2 volts. If the light comes on you have power.

If you must clean the rear glass scrub gently and in the direction of the grid not across it. Open the rear flipper glass. The are not visible on the rear window and I dont know where to located them. Disconnect both wires from either side of the defroster grid and touch one end of your tester to each wire.

You dont want to have to replace the glass to effect this repair. Jump to Latest Follow 1 - 10 of 10 Posts. I had a 2004 and the rear defroster didnt work either the lines that make up the defroster were burnt out. This can be solved easily by turning them back and forth until they stay in the position for the defroster.

Check whether power is getting to your defroster grid. Sometimes you will realize that you were just off by one setting and the problem is solved. I am having the same problem where my Heated Mirrors both work but not the rear defrost. Jump to Latest Follow 1 - 11 of 11 Posts.

Turns out the power sliding rear window has a tab on it that has a sensor. The rear defroster fuse switch relay and wiring. Sometimes a malfunctioning defroster is due to buttons or knobs for the heat or defroster that have become stuck. Russ Powers Registered.

While front defroster problems are often caused by issues with the cooling or HVAC systems a problem with your rear defroster can usually be traced to a faulty electrical component. 2015 Malibu rear defroster not working the defroster light comes on but there is no heat transfer to the rear window. Make sure the rear defroster switch and the ignition key are turned on. I have checked for Power the connector driver side rear window and found NO POWER Then I removed the plastic kick plates bottom of both DS doors.

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