Quote:
Originally Posted by SurferUK
What's all this about exploding rear windows?
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Quote:
Originally Posted by Bluesky 07
The apparent cause IIRC is unequal heating of the rear glass in defrost mode due to deterioration or breakage of the filament. So part of the glass heats up & expands slightly but the rest doesn’t. Under certain conditions, this leads to unexpected shattering of the rear glass.
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Quote:
Originally Posted by montijo505
Several members over the years have reported their rear sliding glass exploding. Always in cold weather when they try to use the rear window defrost button.
Sent from my iPhone using Tapatalk
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I'm pretty sure I read the reason the glass was breaking was the electrical connection area itself was overheating and thus heating that corner of the glass causing uneven expansion which breaks the tempered glass.
Also here's a link to the Toyota "Extended Warranty" Technical Service Bulletin explaining the coverage, condition/inspection, etc. and it states that the condition can be identified by broken glass and discoloration surrounding the defroster electrical connector, there are photos as well.
https://static.nhtsa.gov/odi/tsbs/20...31801-9999.pdf
