Why Does My Rear Window Defroster Not Work

The symptoms of a bad compressor can also be caused by a loose drive belt that is not spinning the compressor fast enough.

Why does my rear window defroster not work. In most cars the rear defroster is electric. These handy accessories cost less than 50 and plug easily into your cars cigarette lighter. Button on the dash lights up. Heated mirrors are working.

It would appear that this sensor somehow sits to far from that sensor and this prevents. I checked the fuse panel under the hood but didnt see a fuse. Attach the clip end of the test lamp to the drivers side metal tab or some exposed metal part of that wire. Your rear defrosted is activated by a separate button than the front defroster.

When you active your rear defrosted these electrical lines heat up. GEN 1 Rear Defroster Not Working Discussion in Ford SVT Raptor General Discussions GEN 1 started by Gus00SVTL Nov 17 2018. These lines are electrical lines that are embedded in the glass. Usually the decline is gradual with only part of the back glass getting cleared of fog snow and ice.

Mar 21 2011 Location. Good question on rear window defroster repair. When the rear defroster does not work at all small breaks in the horizontal grid can be eliminated as the problem. Then the system stopped working.

If power is getting to the grid your defroster problem probably is due to a break in the painted grid. Since I work for a company that makes defroster repair kits defroster repair accessories and aftermarket defrosters I talk to a lot of customers with this issue. If the grid is damaged it opens the circuit. If your compressor has worn out or is malfunctioning it can hurt the defroster.

But the rear-window defroster clears only a narrow strip near the top and bottom the window leaving a wide strip of glass as translucent as a barristers door and absolutely no visibility to the rear. It sounds like a tab came off the defroster which is a common reason for defroster failure. This is especially likely if your defroster works on part of your rear window. If you folks have ever watched one of my videos and its helped you PLEASE email Lanny owner of accurate engines and let him know that you would consider.

Damage can be caused by objects rubbing across the glass which can break some of the grid wires. The defroster will not function from the point of the break forward. You probably dont think much about your rear car defroster until it stops working properly. 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.

Before I book an under warranty appointment with the worst dealer in existence. Your rear window defroster is important even if we dont use it as often in Tampa Bay as other do throughout the country. The most common issue with a rear defroster is physical damage to the heating grid running through the rear window. Purchase a portable vehicle defroster.

Gus00SVTL Full Access Member. 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. You will notice thin lines running across the rear window. They can be placed near the front rear or side windows to blow warm dry air onto frosted areas.

The rear-window defroster grid has packed it in completely requiring you to either drive blind bad idea or resort to. Turns out the power sliding rear window has a tab on it that has a sensor. Power slider also works fine. Page 1 of 2 1 2 Next Nov 17 2018 at 1121 AM 1.

Then the problem eventually spreads to the point where your visibility in the rearview mirror is significantly compromised. Taking apart the wiring and cleaning with rubbing alcohol will ensure that the defroster works smoothly and that everything is safe and runs great. The mechanic can check and replace the compressor if its not working right. That is until something put a little nick or scratch in one of those delicate lines across the glass.

But the defroster became standard issue for rear windows and the world was a better place. A couple of weeks ago I noticed that my rear window defroster is no longer working. It was widely accepted in the car business that a car more than 5 years old would likely have an inoperative rear.

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