How To Replace Rear Window Defroster Grid

Includes simple step-by-step white board illustrations and shows the steps needed to test and troubleshooting with an actual defroster to save the cost of glass replacement.

How to replace rear window defroster grid. The Window Defroster Grid Repair kit is an epoxy adhesive and coating formulation based on pure silver. The grid pattern of thin brown horizontal lines are made from a silver ceramic conductor which is silk screened essentially painted onto the inside of the rear window and then baked at high temperatures. In this video I show you the method I use to repair a rear window defogger tab that was snapped off. The result is that part of the defroster grid does not work.

The heating is accomplished through contact between the defroster elements and the window. Watch this video to learn how to fix your rear defrost. Rear window defrosters can be easily repaired with the Frost Fighter repair solutions to avoid the high cost of glass replacement. Wait a minute and add a second coat.

Using the brush that comes with the paint apply a thin line across the damaged line. Repairs are made by masking off and painting the Frost Fighter grid repair conductor over the damaged area. The conductive paint will rejuvenate a faulty defroster grid line. Wait another 5 minutes remove the masking tape and turn on your defroster to make sure it works.

This video show ho. If power is getting to the grid your defroster problem probably is due to a break in the painted grid. Use when rear window defroster grid lines stop working. The video is applicable to any vehicle with a rear.

Clear View self-adhesive heating elements come on pre-spaced rolls for easy and accurate application. Wait a minute longer and remove the masking. The defroster grid is engineered to have an electrical resistance which when powered provides the heat needed to clear windows of snow and ice. At some point something has scrapped against the window and broken a few of the grid lines.

Test the rear window defroster grid to locate damage on the fine horizontal grid elements using a multi-meter or a simple 12 volt test lamp. You can do this with a tab adhesive product. There are a couple of ways you can repair your defroster yourself. 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.

The smallest break in the defroster grid can cause the element to fail. The conductor bonds aggressively dries. If your window has a defroster grid the only thing that should ever touch the glass is a soft cloth dampened with window cleaner. In the video 1A Auto shows how to fix attach or reconnect your rear defroster terminal connector tab.

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. You dont want to have to replace the glass to effect this repair. Now take the power lead and gently drag the lead along the suspected grid line. This is especially likely if your defroster works on part of your rear window.

We offer solutions to every rear window defroster repair challenge. The experts at 1A Auto show you how to diagnose and repair the rear defrost grid panel. The first is to make sure that the main tabs on the side of the window the ones that carry the electricity to the grid are strongly attached to the defroster itself. Attach the clip end of the test lamp to the drivers side metal tab or some exposed metal part of that wire.

As always please refer to the shop manual for the proper. Window Defroster Grid Repair Kit. You can use the. How To Repair a Rear Window Defrost Grid Panel.

Shake the small vial of conductive paint thoroughly and simply brush the paint over the scratch. Most of the window does defrost its just around the lines which contain a broken connection that it doesnt. Automotive rear window defroster are sophisticated surface heaters. Next you can correct any breaks in the defroster grid by painting on conductive paint using a stencil connecting the gaps in the grid and ensuring that power flows through the entire car defroster.

This versatile silver formulation offers the maximum continuity of conductivity with an electrical resistivity value of less than 1x10-4 ohmcm. If you must clean the rear glass scrub gently and in the direction of the grid not across it.

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