How to troubleshoot a rear window defogger that still runs?
Repair the broken grid segments. Check the connection at the grid and make sure there is continuity between both sides of the connection with a multimeter. Turn on the ignition switch but do not start the engine. Use a test light to check for voltage at the grid connection.
Why does my defroster on my rear window not work?
If it lights up, the grid is getting power. Grid Breakage Test: If power is getting to the grid, your defroster problem probably is due to a break in the painted grid. This is especially likely if your defroster works on part of your rear window.
Where can I buy a defogger repair kit?
You can buy a defogger repair kit to fix a broken rear window grid at most auto parts stores. Some old vehicle models use a defogger grid installed inside the glass of the rear window. On these models the window itself needs to be replaced in order to fix a bad grid.
What should I do if my defogger light is not working?
Check the defogger circuit fuse and make sure it is in good condition. If necessary, replace it. Turn the ignition switch on but do not start the engine. Turn the defogger switch on. Open the driver’s door and look at the dome light inside your car. The light should barely illuminate.
Repair the broken grid segments. Check the connection at the grid and make sure there is continuity between both sides of the connection with a multimeter. Turn on the ignition switch but do not start the engine. Use a test light to check for voltage at the grid connection.
If it lights up, the grid is getting power. Grid Breakage Test: If power is getting to the grid, your defroster problem probably is due to a break in the painted grid. This is especially likely if your defroster works on part of your rear window.
Check the defogger circuit fuse and make sure it is in good condition. If necessary, replace it. Turn the ignition switch on but do not start the engine. Turn the defogger switch on. Open the driver’s door and look at the dome light inside your car. The light should barely illuminate.
You can buy a defogger repair kit to fix a broken rear window grid at most auto parts stores. Some old vehicle models use a defogger grid installed inside the glass of the rear window. On these models the window itself needs to be replaced in order to fix a bad grid.