2004 Toyota Sienna engine and engine cooling problems
46 owner complaints filed with NHTSA name the engine and engine cooling on the 2004 Toyota Sienna — 2% of all complaints for this model year.
What owners report
“The contact's mother owns a 2004 Toyota Sienna. While the contact's mother was driving at an undisclosed speed, several unknown warning lights illuminated. The contact stated that the warning lights illuminated on and off for days and months. The vehicle was taken to an independent mechanic where…”
filed Nov 17, 2025
“Tl* the contact owns a 2004 toyota sienna. While driving approximately 55 mph, the contact heard a loud noise and lost steering control. The vehicle was pulled over to the side of the road and towed to the contact's residence. The vehicle was later taken to an independent mechanic where it was…”
filed Oct 19, 2016
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related recalls
- Engine and Engine CoolingCampaign 11V539000 · Nov 9, 2011
Engine and Engine Cooling problems in other Sienna years
| Year | Reports | Share |
|---|---|---|
| 2013 Sienna | 1 | 1% |
| 2012 Sienna | 1 | 0% |
| 2011 Sienna | 6 | 1% |
| 2010 Sienna | 4 | 2% |
| 2009 Sienna | 4 | 2% |
| 2008 Sienna | 12 | 3% |
| 2007 Sienna | 14 | 4% |
| 2006 Sienna | 4 | 0% |
| 2005 Sienna | 17 | 2% |
| 2003 Sienna | 6 | 6% |
| 2002 Sienna | 16 | 9% |
| 2001 Sienna | 24 | 13% |
Other reported problem areas on the 2004 Toyota Sienna
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.