rear defogger

[skyrider32]

does anyone know why the ac turns on everytime you use the defogger seems like a usless waste of gas

[GTRADDICT]

Probably to reduce humidity in the cab...

[skyrider32]

i dunno seems like regular air would work i dunno just somthing i was pondering

[DreadedFist]

The AC turns on because it reduces moisture in the air. Hence less window fog. My AC pump is seized so I took the belt off, and definitely noticed more window fogging. Namely, the rear quarter windows love to fog up. With no AC operating, I found 22.5c is the best temperature to prevent the windows from fogging up, lol

[DarkCaporaL]

Just leave it on, all new cars also all have auto AC on defrost.

If you're that picky about "saving gas", how can you afford your car? lol :P

[skyrider32]

its not so much the gas just i dont wanna use ac if i dont have to ive had other car that didnt use ac to defog the car jus tthough it was odd that the gtr needed to :P

[jdms13rhd]

its not so much the gas just i dont wanna use ac if i dont have to ive had other car that didnt use ac to defog the car jus tthough it was odd that the gtr needed to :P

I know what you mean. Its a useless function in Alberta. Out in Vancouver or Japan on the other hand, it does help. Just hit the ac button again to turn it off.