How To Restore Rear Window Defogger

In this video 1A Auto shows you how to diagnose and repair a damaged defrost grid panel.

How to restore rear window defogger. The average car owner can attempt to repair this. Check your owners manual for the location of the rear defroster fuse. Allow it to dry then remove the stencil. Im trying to remove the tab off the wire to keep the wire from ripping it off while the adhesive cures but it looks like the tab is wrapped around the wire.

If your window has a defroster grid the only thing that should ever touch the glass is a soft cloth dampened with window cleaner. Press to turn the rear window defogger on or off. An indicator light below the button comes on to show that the rear window defogger is on. If it doesnt check for a bad fuse and replace it if necessary.

Easy to install rear window defroster for Ford Chevrolet Toyota Dodge pickups plus most other truck makes and models. Dont touch the surface or youll leave fingerprints. Before you can reattach the defoggerdefroster you need to get a screw driver and separate those components. Park your car in this area so that your rear window is getting most of the sun exposure.

I use a dab off solder paste and the big tip on my soldering gun. If the light comes on you have power. The act of scraping or cleaning a rear window can sometimes sweep away enough of the metal to interrupt the circuit which in turn prevents electricity from being transmitted to that segment of the car defroster. Connection tabs are on the right and left.

This is one way to repair a rear window defrost if the contact tab has broken off. You may want to touch up your work with a single-edge razor blade. Shake the small vial of conductive paint thoroughly. The compound-curve style of rear window is several hundred dollars and a large hatchbacks backlite on say a Camaro can easily top a grand or more.

The defoggerdefroster harness that is attached to the window is actually 2 parts. Turn the vehicle on and connect the ground lead of the ohmmeter to the defrosters ground connector this is usually on the passenger side of the back glass. Now take the power lead and gently drag the lead along the suspected grid line. In this video I show you the method I use to repair a rear window defogger tab that was snapped off.

To repair the grid line on your defogger simply attach the supplied stencil to the broken grid section and paint on the electrically conductive paint. In this video series I go through the process of diagnosing and repairing a rear window defroster that will not work. Disconnect both wires from either side of the defroster grid and touch one end of your tester to each wire. Dealers will replace the buss bar covers and the contact cover and for certain vehicles will reprogram the HVAC calibration to disable the rear defroster from automatically turning on at keyed start.

Turn the heater on high in your car and activate the rear window defroster. The video is applicable to any vehicle with a rear. Get out of the car and leave it alone like this for 60 minutes. 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.

This field action restores the rear window defrost function. For a neater job just use some masking tape and make the repair only as wide as the grid. As always please refer to the shop manual for the proper. Find an area where your car has direct exposure to the sunlight from the sky.

Make sure the rear defroster switch and the ignition key are turned on. The rear defroster system draws a lot of current so this is fairly common. In the video 1A Auto shows how to fix attach or reconnect your rear defroster terminal connector tab. Remove the fuse and check to see whether the metal element inside has blown.

This video show ho. Those metal tabs located along the edges of the back window can separate from the defroster and are a common reason for defroster failure. Check whether power is getting to your defroster grid. You dont want to have to replace the glass to effect this repair.

As you might imagine the defrost lines that make up this grid are fairly sensitive to physical damage. Minimum length is 45 inches maximum 67 trimmed during installation. The rear window defogger uses a warming grid to remove fog from the rear window. This video applies to most vehicles with a defrost grid on the rear.

Be sure to clear as much snow from the rear window as possible. This pickup truck rear window defroster kit includes 9 grid lines measuring 1125 inches in height.

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