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It is located in the SJB smart junction box , it's a fuse / relay center / microprocessor ! Fuse # F2.10 30 amp . location -behind left side dash panel . Also check the accessory relay . Top relay left side , same location SJB .
Visual Inspection Chart
Most rear window defrosters are on a relay not fuse. If I remember right on Corollas it is marked relay (B) near the top above the actual fuses. This is from memory long time ago so I might be off on the marking and location but it usually is a relay.
Most GM cars and trucks use the fuse panel for safety with the rear defroster...Check your owners manual for the location of the fuse block...I think it is inside your glove box...Try the fuse first...if not the fuse...your options include replacing the glass inserted strips...(do not remove) with a rear shelf defroster blower motor... or an add on rear window defroster...Your auto parts stores should have both...Hope this helps.
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?
Locate the fuse box. Look for rear defrost on label on cover of fuse housing; or your owners manual for this fuse. If this does not help, and your fuses are ALL in working order, then locate the wiring for your rear defrost and follow it. There may a breaking point.
You Have one fuse for the wipers in the car. Left side of steering wheel and the back cover should list the fuses and location. The other box is located in the engine compartment above the battery. They should list the fuse locations under the compartment covering the fuses. Hope that helps