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Car Forum / Lexus Cars / September 2005

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Rear Window Defroster & Broken Window

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Lumpy - 18 Sep 2005 19:51 GMT
Yesterday we took our '91 LS 400 out early in the morning.  We used the rear
window defroster.  We didn't shut it off, but we turned off the key.  2
hours later we returned to find the window with a fine spider web of cracks
over the entire window,hot to the touch and a baseball size hole on the
driver's side.  Nothing taken from the car, no rock, baseball or whatever
inside the car.

I thought it was vandalism because of the hole but the prevailing opinion is
that the defroster kept going after we shut it off and overheated the glass.

Is this possible with the key turned off?  Is this a common problem with
Lexus?   What could the solution be?
Thank You
GRL - 19 Sep 2005 00:25 GMT
Hard to imagine this happening other than by vandalism. The defroster
element is wired so it is only one when the engine is on. No engine on, no
power to the element.

> Yesterday we took our '91 LS 400 out early in the morning.  We used the
> rear window defroster.  We didn't shut it off, but we turned off the key.
[quoted text clipped - 10 lines]
> Lexus?   What could the solution be?
> Thank You
John Cho - 19 Sep 2005 21:48 GMT
unless you have a hole in the glass, you won't find anything in the car.
   if the defroster somehow stayed on, your battery would have been dead.

> Hard to imagine this happening other than by vandalism. The defroster
> element is wired so it is only one when the engine is on. No engine on, no
[quoted text clipped - 14 lines]
>>Lexus?   What could the solution be?
>>Thank You
Travis Jordan - 19 Sep 2005 22:01 GMT
> unless you have a hole in the glass, you won't find anything in the

> > > the touch and a baseball size hole on the driver's side.
John Cho - 20 Sep 2005 01:34 GMT
DOH!  missed that...

>>unless you have a hole in the glass, you won't find anything in the
>
>>>>the touch and a baseball size hole on the driver's side.
Tom Smith - 24 Sep 2005 19:51 GMT
I'm having the same problem.  Can you send me the answer when you figure it
out?

Tom
tomsmith@postmasternetworks.com

> Yesterday we took our '91 LS 400 out early in the morning.  We used the rear
> window defroster.  We didn't shut it off, but we turned off the key.  2
[quoted text clipped - 9 lines]
> Lexus?   What could the solution be?
> Thank You
Lumpy - 25 Sep 2005 08:37 GMT
The dealer checked the electrical system and said it was ok.  Apparently we
were vandalised.

Interesting that people not connected with Lexus had heard of this kind of
electrical malfunction.  Lexus dealers hadn't heard of it and felt it was
unlikely or even impossible.

We had a glass installer from the insurance company come out  and he said
he'd seen it before (not necessarily with Lexus).  He didn't have our color
of glass so we had to go to the dealer.  There are 2 circuit breakers and a
10 minute timer that should protect the window.

We don't feel reassured, but if you can't find a problem you can't fix it.

> I'm having the same problem.  Can you send me the answer when you figure
> it
[quoted text clipped - 20 lines]
>> Lexus?   What could the solution be?
>> Thank You
photoart_uk@yahoo.co.uk - 29 Sep 2005 19:12 GMT
Hi

I had rear window blow, two holes and fully shattered, Not vandalised
as I wss sitting in the car at the time, it made a VERY big bang, the
replacement window co said it was an electrical fault.

> The dealer checked the electrical system and said it was ok.  Apparently we
> were vandalised.
[quoted text clipped - 34 lines]
> >> Lexus?   What could the solution be?
> >> Thank You
Travis Jordan - 29 Sep 2005 19:34 GMT
> The dealer checked the electrical system and said it was ok.
> Apparently we were vandalised.
>
> Interesting that people not connected with Lexus had heard of this
> kind of electrical malfunction.  Lexus dealers hadn't heard of it and
> felt it was unlikely or even impossible.

Of course they've never heard of it.  They don't follow the Internet
discussion groups.

http://www.lexusownersclub.co.uk/forum/index.php?showtopic=26380
 
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