Far back left corner of the cargo area. Remove the interior trim and the small cargo hatch to access (be gentle as the large plastic piece can break)
Rear window relay is inside the pillar on drivers side - its easiest if you remove th rear passenger interior side panels
The tail gate control mudule is located behind the plastic trim (wall) at the left rear of the vehicle. Beside the small compartment and below the rear speaker.....
According to "Relay Locations" in the Bentley manual, the heated rear window time delay relay is located behind the right side of the center console.
It is located under the hood in the fuse box.
rear window defroster relay in a 97 Pontiac firebird
where is the rear window defroster relay located in a 2004 Toyota Four Runner, would this also control the rear wiper arm? Try something simple: just open and re-close the rear window. The window has a safety switch that keeps the wiper, washer and heater from working if the window is open. The window settles down (from opening and closing the hatch) over time the window settling triggers the switch. If you open and re-close the window it resets the switch and everything works again. My 2003 4 Runner does this over time. I just open it and re-close it to fix the problem.
The relay is located in the pass. rear side of the car under the back window, next to the computer. It is a double relay.
Rear left behind the paneling and the rear wheel arch.
The front and rear washers share the same reservoir, which is located under the hood. It holds a gallon of fluid.
The rear window defog relay is what keeps fog from building up on the rear window. It works by using current to warm the window to prevent moisture buildup that can hinder visibility.
The 2005 Chrysler 300 rear window defrost relay switch can be found beneath the drivers side dashboard. The rear window defrost relay switch will be near the center console.
On my 88 4Runner 22RE, the relay is located under the hood on the passenger side fender, just behind some sort of resister looking thing with cooling fins, a bit to the rear of the front tire, with a white plastic 4 wire plug.