rear glass defroster, draining battery Options

[Hanyo]

Anyone have this problem? My celica's battery gets completely drained from time to time, Initially i thought it was the window roll up modules trickling the power away, or the extra fuel cut and start cut relays i have installed.

But after careful inspection, I notice when ever i leave my rear defroster switch on; my car battery would be completely dead by the next morning. I check the alternator and its giving 14 volts so it prefectly capable of recharging the system.

I'm thinking the auto shut off mechnism in the defroster is dead. Anyone have any idea;s how to test this idea?

[GriffGirl]

I believe Tonytutino just had this exact problem... check his recent posts or PM him, I don't know how he got it tested but it sounds like the same problem. I think it was a relay that was drawing power. Vampire relay.

[Jaws4God]

I have had a problem with my battery going dead from time to time.. I never figured out what it was... i'll have to check to see if this is what happened!

[tonytutino]

lol you can [all] just call me Tony
but yeah man i had this EXACT some problem and you can read my post if you want. i went through all sorts of crap, i hope you didn't have to do the same

http://www.6gc.net/forums/index.php?showto...54761&st=20

the problem is your rear defroster relay behind the dash. its roughly 60 dollars from Napa.

Coincidentally the alternator and rear defroster run on the same circuit. I never really considered the rear defroster causing a problem so i assumed it was the alternator/sub/amp/etc. lol it was a pain. this should fix it right up dude

[hurley97]

[if I am not mistaken] the rear defroster in an ST does not automatically shut off. you push it in and it stays in (on) until you push it again and it comes out (off). The GT defroster has an auto shut off built in, push it in and it returns to the same position and the light turns on to let you know its on, then the light goes off when it auto shuts off.

that being said, it still does not mean leaving it on would drain your battery

This post has been edited by hurley97: Mar 4, 2008 - 8:15 PM