My rear wiper does not work what may be the problem? Also I don't think my rear defrost works what may be the problem?

The only thing they have in common is the ignition switch.

some thing not grounded proplery

Multi function control switch has to be replaced.

Yeah, I'd think it would have lines, too, unless some new way of doing it that I'm not aware of. Maybe the rear window was replaced with a window without the defrost option. There should be a small two wire connector coming out of the back shelf near lower driver's side of rear window. That would be the defrost connector to the window lines (that aren't there,lol).
Well, good luck with that! I think there are aftermarket kits for rear window defrost, though.

blinkers sounds like the flasher unit is not working. It's located under dash. Also check for burnt out bulbs.
Rear defrost, or rear defogger?: Your defogger for the rear window would run off a relay, probably located in the fuse panel of your car. Often, the connections at the rear window get broke or disconnected.
Front defrost: does your heater blower work?

replace the COMBINATION SWITCH

Check all of your fuses and don't forget to check the ones in the engine bay also. If those are fine then you have to remove the switch and verify that it's getting a 12V power feed. If that works then the switch should but you'll want to test a good with it too.

If the switch checks out then you'll want to test the wiper motor.


The defroster is another animal though. If there's a break in the wiring leading to the window itself then they'll need to be replaced. If the connector popped off or if there's a broken trace in the window that can be fixed but ONLY BY A PROFESSIONAL.

The reason I say that is because if you try to solder any of those parts on to the window (which is tempered glass by the way) the glass could crack or break.

In the end, it would be easier just to replace it.

I haven't tested one yet but I'm going to guess that you may need to remove the tailgate liner and have the tailgate shut when you flip the switch and test with a voltmeter or test light.

If that detects power then the wiring is fine and the easy-ish part will be to replace the wiper motor.

I just had the same problem. I have an '04 4Runner and my rear wiper, fluid wash, and defrost stopped working after it was recently serviced. If you had the battery cables disconnected recently here is the solution...Start the engine and lower the rear tailgate window all the way... close the rear window and then turn the engine off. Restart the engine and the wiper,wash, and defrost. should work again. It has something to do with the computer which needs to be rebooted. Good luck.

1. check the fuse to the rear wiper motor
2. check for power to rear wiper motor at the motor (power wire going in to the wiper motor with rear wiper switch on)
If you have good fuses & have power going in to the rear wiper motor...
3. Pull old rear wiper motor and install a new rear wiper motor.
Thank you please drive thru......

try replacing the wiper relay

or could be a faulty wiper intermittent part of the switch