Three problems related to sun roof have been reported for the 2004 Toyota Sienna. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Toyota Sienna based on all problems reported for the 2004 Sienna.
The contact owns a 2004 Toyota Sienna. While driving 50 mph she heard an extremely loud noise coming from the roof of the vehicle. She pulled over and discovered the noise she had heard was the sunroof which had violently exploded. A temporary repair was made to the vehicle. The vehicle was in the process of being taken to an authorized dealer for repair. The failure mileage was 124,949. The current mileage was 125,249. Updated 01/25/10 the repairs were paid for through the consumers insurance company. The repair technician noted that there was no evidence of any foreign object having impacted the glass. No further problems since the repair. Updated 01/26/10.
While driving on the freeway the glass sunroof/moonroof of my 2004 Toyota Sienna xle shattered. From the pattern of the glass breakage it looks like the glass broke due to interior cabin pressure. This is actually the second time this has occurred with this vehicle. We had been on the road for about 4 hours, we did not hit a pothole and we had not gone under an overpass. We heard a loud boom and then the sound of broken glass on the roof and dropping onto the sunshade. Luckily the sunshade was closed or my wife and kids would have been showered with broken glass. I called my insurance company and the glass was replaced by the dealer only part.
2004 Toyota Sienna sunroof exploded. Customer states the glass in the sunroof exploded when she was taking off from a stop light. She states that the weather was cool and not hot. The consumer stated the glass did stay in tact.