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Yesterday, September 22, 2012, I experienced an explosion of the tilting portion of my panoramic sunroof. The car is a 2012 Toyota Venza. No cars or trucks or overpass was around me when I heard the explosion. I have 2 parallel jagged lines going across the glass. I took it to the dealer but they said it was not possible to explode on its own and it must have been a rock so I have to go through my insurance. I'm frustrated that I have to pay $250 deductible that I know was a manufacturing defect after I researched and found hundreds with the same experience. I have a glass company coming tomorrow. I pray that the tint will be a match. My next car will not have a sunroof.
is it just oem glass or was there a tint film applied? spontaneous glass fracture is not common but can happen on rare occasion due to a defect in the glass that causes stress to rise to a point of breakage. small scratches in glass can cause the glass to "explode", i witnessed this in one of my material sciences labs many moons ago, the the surface scratching was only from a scotch-brite pad.

only a good failure analysis company can do the work needed to determine what happened, but only if you have all/most of the pieces.

my advice, get your deductible down to $100, then it wont seem so bad.
 

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this happened alot to the 2005-6 scion tc. toyota had a recall and all they did was put a film behind the glass that tilted up. They did this so the glass wouldnt get into the car when it broke.
 

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This just happened to our 2012 Toyota Prius on Monday June 23, 2014. My wife was driving to work with no one around her, in front to the back or on the side and there was no overpass in sight. She called hysterically and said that her sunroof cracked with an explosion sound that actually jolted her car. After she sent pictures you could tell that this was not hit by an object as the shards of glass remaining was pointed in a funnel formation pointing up leading me to believe that it came from the inside out. If it was hit by a rock the shards of glass would have went inward. Not only did it create a hole on the passengers side it shattered the drivers side roof from front to back. After taking it to the dealership the service manager insisted that it was an object that hit the roof and continued to give her the run around. I got involved and talked with the general manager and explained what took place as he looked at the car and called the Toyota field manager to investigate. The GM was kind enough to give her a loaner car at no cost. Another manager called back a couple days later and explained that this was a mystery. I explained that this was not a mystery and to google sunroof explosions as there are other vehicles reporting the same thing. He went on to say that this is the first he has seen for the Prius. My response was that it was the first reported without being badgered into them convincing me or my wife that it was caused by an object hitting the car. the dealership wants to pay for half the cost to replace the roof. I am not going for half as Toyota need to be responsible for the entire repair as this was no fault of my wife or anything that we may have done to create this unfortunate event from happening. I explained that the dealership is not at fault either, its a defect within the build or materials (tempered glass) by Toyota or other vehicle brands. they went on to say it was due to the heat and airflow. If this is the case then why did we buy the vehicle with a solar panel on top to support the vehicle from getting too hot on the inside, this is what this feature is suppose to eliminate from happening. Toyota needs to step up and do the right thing as there offer of covering half is unacceptable and I should not have to file an insurance claim and pay my 200 dollar deductible in order to get the vehicle repaired. Step up Toyota and do the right thing and do a factory recall before someone gets seriously hurt. Disappointed for sure...
 

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This just happened to our 2012 Toyota Prius on Monday June 23, 2014. My wife was driving to work with no one around her, in front to the back or on the side and there was no overpass in sight. She called hysterically and said that her sunroof cracked with an explosion sound that actually jolted her car. After she sent pictures you could tell that this was not hit by an object as the shards of glass remaining was pointed in a funnel formation pointing up leading me to believe that it came from the inside out. If it was hit by a rock the shards of glass would have went inward. Not only did it create a hole on the passengers side it shattered the drivers side roof from front to back. After taking it to the dealership the service manager insisted that it was an object that hit the roof and continued to give her the run around. I got involved and talked with the general manager and explained what took place as he looked at the car and called the Toyota field manager to investigate. The GM was kind enough to give her a loaner car at no cost. Another manager called back a couple days later and explained that this was a mystery. I explained that this was not a mystery and to google sunroof explosions as there are other vehicles reporting the same thing. He went on to say that this is the first he has seen for the Prius. My response was that it was the first reported without being badgered into them convincing me or my wife that it was caused by an object hitting the car. the dealership wants to pay for half the cost to replace the roof. I am not going for half as Toyota need to be responsible for the entire repair as this was no fault of my wife or anything that we may have done to create this unfortunate event from happening. I explained that the dealership is not at fault either, its a defect within the build or materials (tempered glass) by Toyota or other vehicle brands. they went on to say it was due to the heat and airflow. If this is the case then why did we buy the vehicle with a solar panel on top to support the vehicle from getting too hot on the inside, this is what this feature is suppose to eliminate from happening. Toyota needs to step up and do the right thing as there offer of covering half is unacceptable and I should not have to file an insurance claim and pay my 200 dollar deductible in order to get the vehicle repaired. Step up Toyota and do the right thing and do a factory recall before someone gets seriously hurt. Disappointed for sure...
The most difficult part of this is trying to figure out what happened. Could it be a defect in the glass? Sure, glass is far from a perfect product. Could something have hit it? Maybe, hard to say for sure from a dealer stand point. The easiest thing is to let the insurance repair it, that's why we all have insurance, to help with the unexpected. ;)
 

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I tend to think it's more of like what happened to me years ago. If the glass at some time gets a small crack in it, almost undetectable, and then when it gets hot and really builds up pressure when the windows are closed and then you throw in turning on the A/C on that hot day they can shatter. The chip or crack could have been from a previous Rock, hail, who knows what. I had it happen on my Windshield years ago. I had a small chip at the bottom of my windshield. I parked at work, and it was a really hot day, when I came out my windshield was completely shattered.. One of the crack lines went right down to the chip. That chip had been there for months...it just took the right conditions....
 

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Venza 2011
The panoramic sunroof over back seat cracked and fell in.
I was driving about 50 mph last week on smooth road in Chicago. The sound was like ice cracking and falling off of the car as it does in winter sometimes. No cars were on the road at the time. The center of the window fell in leaving a hole about 1 foot in diameter.
A Toyota dealership is quoting $6800 to fix this.
 

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This very same thing happened you our Venza yesterday. Our Granddaughter was driving it, there were no stone strikes. The weather was cloudy with highs of 4C and they had not gone under a bridge. And she checked the car including the moon roof prior to leaving the city. It sounded like a gunshot and when the pulled over there was a circular central loss with radial cracking through the rest of the glass. To make a long story short we have received verbal confirmation that we are getting insurance coverage minus deductible. Estimated cost is 1700 CDN all in. I will deal with Toyota when I get home about the deductible costs. It appears this happens rarely but often enough that forums are full of these stories.
 

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This very same thing happened you our Venza yesterday. Our Granddaughter was driving it, there were no stone strikes. The weather was cloudy with highs of 4C and they had not gone under a bridge. And she checked the car including the moon roof prior to leaving the city. It sounded like a gunshot and when the pulled over there was a circular central loss with radial cracking through the rest of the glass. To make a long story short we have received verbal confirmation that we are getting insurance coverage minus deductible. Estimated cost is 1700 CDN all in. I will deal with Toyota when I get home about the deductible costs. It appears this happens rarely but often enough that forums are full of these stories.
It is glass after all. I even had a glass shelf on an entertainment center explode with nobody around it. These things happen. Have it fixed and move on. That's what insurance is for. It's not Toyota's fault so no sense in getting your blood pressure up about it.
 
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I got in my 2015 highlander proceeded to back out of my drive then put the car in drive going about 10 miles per hour and boom!!! My sunroof shattered, sounded like a gun went off. I called the dealership, Don Mcgill Toyota of Houston, service said bring it in and we will determine what happened. So what do they say, something hit my car!!!! Really what fell from the sky??? No over passes no highway no nothing, it's on me to come up with 1300$!!! This is highway robbery!!!
 
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