2004 Toyota Sienna Engine cooling Problems
- Complaints
- 46about this part
- Share
- 2%of 2,062 total for the year
- Median mileage
- 53,000miles
- Trend
- RisingComplaints filed in the last 3 full calendar years are at least 25% higher than in the 3 years before.
NHTSA recorded 46 complaints about the engine cooling of the 2004 Toyota Sienna, 2% of the 2,062 complaints for this model year. Where a mileage was given, the median is 53,000 miles. 1 of these say a crash was involved, according to the filers. 1 recall campaign on record is filed under a similar system.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“My air conditioning failed on my Sienna Toyota van. I had my mechanic unplug it. I did not have any damage but can no longer use AC. On line, I found many other Sienna 2004 owners with similar complaints. Some had cars stopping. Toyota never issued a recall but did a bulletin. The cost is tremendous to fix.”
NHTSA complaint #10311135, filed 2010-02, 100,000 miles“The sliding automatic door on my 2003 Toyota Sienna frequently closes without warning and several times it has closed on my daughter. It is suppose to have a sensor that would prevent it from completely closing if something or someone is in the way but it doesn't work. I've had to pull my daugher way from the door as it was pressing against her. This is a real safety concern. The van has also recently begun to automatically lock without warning.”
NHTSA complaint #10321891, filed 2010-03, 120 miles“Hesitation, bogs on a acceleration, delay in a acceleration no power for a few seconds. Looses speed and cars behind catch up very quickly and worried about getting hit in rear end. My wife refuses to drive and had to pull off road twice to avoid rear end collision. Toyota dealer felt the problem, but I have no offer for repairs.”
NHTSA complaint #10041326, filed 2003-10, 400 miles“Minivan does not alway accelerate properly. When the vehicle is slowing down, like when coming to a red light, the vehicle will hesitate when I try to accelerate if I have not already come to a complete stop. This seequence will usually reproduce the failure: 1. Travel around 40mph. 2. Quickly slow to around 10mph. 3. Try to quickly accelerate to 40mph again. The vehicle will hesitate and pause before starting to accelerate.”
NHTSA complaint #10124337, filed 2005-06, 27,000 miles“Hesitation bogs on a acceleration, delay in a acceleration no power for a few seconds. Looses speed and cars behind catch up very quickly and worried about getting hit in rear end. My wife is worried about getting in an accident. Toyota dealer felt the problem, but no offer for repairs they say this is normal operation. This is a safety issue. We have had it in twice with no result. (2004 Toyota Sienna)”
NHTSA complaint #10050837, filed 2003-12, 5,000 milesRelated recalls
- 11V539000Nov 9, 2011Toyota is recalling certain model year 2004 avalon vehicles; 2004 and 2005 camry, camry solara, highlander, and sienna vehicles, 2006 highlander hybrid; 2004…Covers: Toyota Sienna 2004–2005, Lexus RX330 2004–2005, ES330 2004–2005 +6 more
Related service bulletins
- 10253223Mar 4, 2024This is to advise of various price adjustments that will affect Toyota Genuine Motor Oil and Long Life Coolant, effective March 1, 2024. These products are ordered through the…
- 10060836Feb 25, 2013Summary to be provided on a future date.
- 10034284Feb 4, 2010Toyota: techstream ecu flash reprogramming procedure. Flash reprogramming allows the ecu software to be updated without replacing the ecu. Flash calibration updates for specific…
- 10022731Sep 7, 2007Engine pinging or knocking noise.
- 10017317May 9, 2006No start in sub-freezing ambient air temperatures.
- 10018857Jan 30, 2006Warranty coverage enhancement - isolated reports from extreme cold climate areas that the radiator may crack at the base of one or more of the radiator tubes, resulting in…
Engine cooling: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2013 | 1 | 1% |
| 2012 | 1 | 0% |
| 2011 | 6 | 1% |
| 2010 | 4 | 2% |
| 2009 | 4 | 2% |
| 2008 | 12 | 3% |
| 2007 | 14 | 4% |
| 2006 | 4 | 0% |
| 2005 | 17 | 2% |
| 2004 | 46 | 2% |
| 2003 | 6 | 6% |
| 2002 | 16 | 9% |
| 2001 | 24 | 13% |
| 2000 | 66 | 18% |
| 1999 | 39 | 18% |
| 1998 | 33 | 11% |
Other parts of the 2004 Toyota Sienna
962 complaintsLatches, locks and linkages
308 complaintsSteering
159 complaintsElectrical system
132 complaintsTires
124 complaintsVehicle speed control
111 complaintsOther or unknown
107 complaintsSeat belts
98 complaintsTransmission and drivetrain
89 complaintsBrakes
88 complaintsElectronic stability control
71 complaintsFuel system
49 complaints
← All problems reported for the 2004 Toyota Sienna
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology