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It is possible that the rear defogger does not work on the 2001 Hyundai Accent because the vehicle has a blown fuse or damaged wiring. The defogger might also not work because the wiring is disconnected.
Turning the switch on closes the circuit, running 12V power through the grid of lines on your rear window at low resistance. Heat vaporises the 'fog' on the window, and you can see, hopefully.
Check ignition switch, common problem.
There is a switch on the dashboard to turn on the rear window defroster (also called a rear window defogger in areas that don't have frost). If you cannot locate the switch, take the vehicle to a local dealer of that product, and someone will be happy to show you where the switch is located. If you locate the switch and the defroster will not work, there is likely a blown fuse or faulty wiring, in which case your local dealer will be even happier to repair it for you - for an appropriate fee.
simplest thing to check-fuses!
Read your owner's manual. This information can be found there. No its not, it just shows where the fuse box is under the engine hood. I can't read which one is for rear wiper, or rear defogger. If you are unable to use the rear wiper and defogger, it is likely due to the fact that the rear window is down ever so slightly. I fought this problem for weeks until I rolled the window down and back up. Now the defogger and wiper work!!!
the brake light switch is out of adjustment. Readjust the switch.
You need to replace the defogger switch. I got three of them from a pull a parts salvage yard. You will need a torx bit to remove the screws. The part has been discontinued from gm and is not avalible any other place. No light on it will not work.
brake light switch bad check for continuity at the fuse then the switch, but yeah bad switch. Kongkit Raggan-Supatanampon
your brake light switch is probably out
I can't tell you the exact name of the part. I believe that if you take the back panel off inside next to the rear window where the defogger connects, you will find that the part is burnt. It will be on the passenger rear. Do not confuse it with the antenna. I went to a salvage yard and got one from a used Lesabre.
it would be the brake light switch about 20 dollars at autozone