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Engine coolingPart report

2007 Toyota Sienna Engine cooling Problems

Complaints
14about this part
Share
4%of 364 total for the year
Median mileage
26,159miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 14 complaints about the engine cooling of the 2007 Toyota Sienna, 4% of the 364 complaints for this model year. Where a mileage was given, the median is 26,159 miles.

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.

“I have had this van since new. Air conditioning stopped working after 4 years with less than 60000 miles. First transmission problem started at 68000 miles. The transmission problem first reared its ugly head when I was backing out of a parking spot one early morning in november 2011. It sounded as though I had run over something. After getting out of the van and looking around it appeared as though everything looked good. …”

NHTSA complaint #10498073, filed 2013-02, 68,000 miles

“I bought a second hand 2007 Toyota Sienna le in june 2009. The vehicle had about 49,000 km. I noticed that vehicle had produced unusual noise when started at cold. It sounded like diesel engine. I took a vehicle in to a Toyota dealer and they attempted to correct the problem. Apparently, there is a TSB issued on this problem. Although I appreciate the dealer's honest effort in correcting the problem, the noise is still there when engine is started at cold.”

NHTSA complaint #10276826, filed 2009-07, 49,000 miles

“Catalytic converter emits strong sulfur odor into passenger compartment. The smell made my family sick with headaches. Toyota reps told me to note what gas station I go to and it may take multiple visits to fix since no one else reported similar problems.”

NHTSA complaint #10219368, filed 2008-02, 4,000 miles

“My brand new Toyota Sienna has produced hum noise at around 2500 RPM as soon as I pickup the new van. I have the dealer and the regional reps looked at and they found the noise and they also told me that all the Toyota with the same engine have the same problem. I was told they will not fix it. I filed multiple complaints with Toyota but received the same result! I like to know if you can do anything about it. Thanks! *updated 12/12/07 updated 12/12/07”

NHTSA complaint #10201128, filed 2007-08, 15 miles

“On march 12. 2010 I was traveling to arches national park with four other passengers. On the way, we decided to stop by bryce canyon utah. I was driving a 2007 Toyota Sienna through 26 s. Main street bryce canyon city. Because of bad weather condition. I had put the car in gear 3 and was driving 5 miles per hour. Suddenly I heard the engine accelerate and felt the car push forward. I let off the accelerator and cautiously pressed the brakes as hard as I could, but brakes did not respond and the car continued forward about 150 feet. …”

NHTSA complaint #10322569, filed 2010-03, 26,159 miles

Related service bulletins

Engine cooling: other model years

YearComplaintsShare of year
201311%
201210%
201161%
201042%
200942%
2008123%
2007144%
200640%
2005172%
2004462%
200366%
2002169%
20012413%
20006618%
19993918%
19983311%

Other parts of the 2007 Toyota Sienna

Body and structure
102 complaints
Engine
42 complaints
Air bags
37 complaints
Other or unknown
34 complaints
Transmission and drivetrain
31 complaints
Vehicle speed control
28 complaints
Brakes
27 complaints
Tires
25 complaints
Latches, locks and linkages
19 complaints
Electrical system
18 complaints
Steering
12 complaints
Suspension
12 complaints

← All problems reported for the 2007 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