hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
83,737 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2004 Toyota Sienna accessories - exterior problems

accessories - exterior problem

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2004 Toyota Sienna Owner Comments

problem #4

Mar 282014

Sienna 6-cyl

  • 120,000 miles


Due to a failure in the moonroof system in the vehicle (rubber seal and two drains on either side), rain water seeped into the air bag system resulting in mold-build up and serious damange to the vehicle and possible malfunction of the air bags and breathing of dangerous mold/fungi. All the passengers in the vehicle got nauseous in 1-hour journey and the future consequence of such fungi build up and potential failure of the air-bag could be life threatening.

- Fremont, CA, USA

problem #3

Nov 292009

Sienna 6-cyl

  • Automatic transmission
  • 124,949 miles
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.

- Crab Orchard , KY, USA

problem #2

Jul 022008


  • 90,000 miles
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.

- Rancho Cordova, CA, USA

problem #1

Dec 292006


  • miles
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.

- New Lisbon, WI, USA

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