2011 Toyota Sienna Engine cooling Problems
- Complaints
- 6about this part
- Share
- 1%of 615 total for the year
- Median mileage
- 6,800miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 6 complaints about the engine cooling of the 2011 Toyota Sienna, 1% of the 615 complaints for this model year. Where a mileage was given, the median is 6,800 miles. 2 a fire, according to the filers.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“2011 Toyota Sienna van with 220 miles on it caught fire in my driveway 2 minutes after parking it there. No warning lights or anything. Vehicle is a total loss, no response from Toyota for over two weeks, owned the brand new van for less than a week. A cause and effect investigator hired by my ins co found the problem to be a faulty fan wire that shorted out. Extensive damage to my house and landscaping as well. Burned out van still sitting in my driveway causing danger with broken glass and soot to my children and pets. Unable to get any response what so ever from Toyota. …”
NHTSA complaint #10340222, filed 2010-06, 225 miles“The vehicle engine stalls. This occurs intermittently especially when making turns. I had to press the gas pedal all the way down to accelerate. The vehicle brake lights do not come off for about 10 minutes when the engine and lights have been switched off. It is possible to start the car with the push button without pressing down on the gas pedal sometimes.”
NHTSA complaint #10443902, filed 2012-01, 24,000 miles“The air conditioner housing is leaking water onto safety-critical parts. This housing is made of plastic parts that are glued together. Water is condensed during the cooling cycle, and it then collects at the bottom and exits the vehicle through a rubber hose. The glue holding the housing together has failed. Water is leaking from the housing and running onto the computer module that deploys the airbags. …”
NHTSA complaint #10583658, filed 2014-04, 56,000 miles“Van just won't start. It cranks over but won't start, after tens minutes it started up fine. Van has only 510 miles. At 5500 miles vehicle again cranked but would not start. After it started, it ran rough and died at times, took it to dealer but they can not find problems. …”
NHTSA complaint #10373123, filed 2010-12, 510 miles“5 month old Toyota Sienna 2011 stalled after the lights inside the dashboard (control panel) started blinking and then would not start again. It was towed to the dealer on 12/22/2010. Dealer initially (on 12/27/2010) said it is due to water damage and engine has to be replaced. Dealer was not able to find any evidence of Sienna being submerged in water (as it did not go into any big puddle or deep waters). I opened a case with Toyota on 12/28/2010. …”
NHTSA complaint #10377303, filed 2011-01, 7,500 milesRelated 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…
- 10183281Oct 21, 2020TT: HVAC drain tube is found to be blocked/clogged.
- 10178524Jul 30, 2020TT: HVAC drain tube is found to be blocked/clogged.
- 10177599Jun 3, 2020These SKUs are Exhaust Manifolds with Catalytic Converters. The customer communication requested return of unsold inventory due to a loss of CARB certification. These SKUs can no…
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 2011 Toyota Sienna
211 complaintsBody and structure
154 complaintsElectrical system
69 complaintsOther or unknown
64 complaintsWheels
37 complaintsTires
33 complaintsBrakes
32 complaintsTransmission and drivetrain
30 complaintsEquipment
25 complaintsSteering
24 complaintsEngine
23 complaintsVehicle speed control
20 complaints
← All problems reported for the 2011 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