Ca1vN

so here in ny we've had some erratic weather conditions the past couple of days, and ive noticed that when it was snowing/hailing/raining, my rear windshield wasnt defrosting. is there a way of checking to see if something is wrong? i was thinking of taking it to the dealer since its still under warranty, and its CPO.

ive tried searching the forum as well, only got results for LS and SC models

and before you ask what IS i have please look at signature.

thanks!

greg0126

iTrader: (2)

I'm not sure if the rear defroster shares a fuse with anything else but I would start there. Hopefully it is something as simple as that. If not I'd just take it to the dealer since you're still under warranty.

Ca1vN

is the fuse circuit board thing under the steering wheel?

greg0126

iTrader: (2)

I just checked the manual for my car on Lexus' website and it listed two fuses that control the rear window defogger. The covers for all of the fuse boxes have maps that tell you what each fuse is for, so you will be able to confirm which one it is that way.

1) Fusebox under the hood. It is next to the battery. Position 23 - 50 Amps.
2) Driver side panel (under the steering wheel). Position 18 - 10 Amps.

If a fuse is the problem it's probably going to be #1, the fuse I listed as #2 has a bunch of other crap tied to it that you would probably notice wasn't working anymore if it was out.

codenko

iTrader: (8)

I'd also check the connections of the wires running across the rear window
my friend picked up his TSX from a carmax and they had someone remove the tint with a razor blade from the rear window....putting a slice through every defroster wire on the window

Gville350

iTrader: (10)

^Yep, I was gonna say had anyone previous had tint in that car and had it removed? If so, they probably broke the defroster lines across the back. After so many get "broken" the circuit isn't complete and it doesn't defrost. If you have a multimeter you can check to see if the contacts on the rear window are getting power. If not, probably a fuse. If they are, then the lines have been broken.

greg0126

iTrader: (2)

I never though of that. Just curious, would you happen to know how much it costs to fix the broken contacts? Reason I ask is because I tint all of my cars so it's something to look out for should I ever have to remove it.

kickin8

iTrader: (1)

you need to replace whe whole window....

istarzan

iTrader: (8)

Happened to me. Got my car from carmax. They removed window tint and in the process, tore off some of the back windshield defroster lines. But they put in a new one for me. Good luck!

Ca1vN

wow these replies arent the best i was expecting... so i would have to replace my entire back windshield??

Sango

iTrader: (10)

Essentially yes, if the lines have been severed.

Ca1vN

well from the looks of it, it doesnt look like they were severed or damaged.. would there be another explanation? is there a fuse that connects to the circuit board under the steering wheel i can check?

chikoo

TaKe it to the dealer and let us know what the issue was and how it was fixed.

prech

May I ask what your resolution was for this defogger issue? Hopefully not too complicated...

Thanks