However turn on the rear wiper and everything works as long as the wiper is not in the home position.
Car back window heater not working.
Issues can range from a blown fuse to a bad blower speed controller.
Heater windows radio wipers all work in the acc key position.
How to defrost a car window without a heater step 1.
Jumping the car or replacing the battery can solve this problem.
Remember the timer will turn off the current within 5 to 10 minutes so you ll need to keep track of the timer s time window or you ll be looking for current that s not supposed to be there.
Use an ice scraper to scrape the windows both inside and out.
There is a chance that you are missing terminal edges on your window heat grid.
Examine the fuse to see if it has blown.
If it has replace it and test the heater again.
That is until something put a little nick or scratch in one of those delicate lines across the glass.
If the light comes on you have power.
Trace the current path from the fuse to the switch to the timer and on back to the window.
Wipe up interior moisture and water droplets with.
If this happens to be the case you can use a soldering gun to reattach them.
If the exterior frost layer is thin your windshield.
As it goes back and forth across the window everything comes on and shuts off.
Start the car and it all shuts off.
Disconnect both wires from either side of the defroster grid and touch one end of your tester to each wire.
Make sure the rear defroster switch and the ignition key are turned on.
If the new fuse.
But the defroster became standard issue for rear windows and the world was a better place.
The heating and defrosting system rely on an electric blower motor to move the hot air into the cabin of the car and through the defroster vents.
Then the system stopped working.
Turn your windshield wipers on when you get in the car.
Repairing heater element with conductive paint.
Fixing a heated rear window fuse check.
If the blower motor is malfunctioning the defroster will not work.
Clip the lamp.