2005 Scion TC Engine cooling Problems
- Complaints
- 5about this part
- Share
- 3%of 155 total for the year
- Median mileage
- 31,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 5 complaints about the engine cooling of the 2005 Scion TC, 3% of the 155 complaints for this model year. Where a mileage was given, the median is 31,000 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.
“My 2005 Scion TC surges/lurches forward when resuming from a stop. The amount of pressure you apply to the gas pedal has no effect on how the car is going to move forward. The problem was very intermittent and hard to notice but started happening more and more often as of aug./sept. 2008. In mid sept. I almost rear ended the car in front of me taking off from a stop light. I took the car to the selling dealership and the service mgr. Went on a test drive and said he noticed the problem at least 5 times in a few mile drive. …”
NHTSA complaint #10255219, filed 2009-01, 31,000 miles“The manual transmission toyota Scion TC has a violent cold start jerking and bucking at a slow speed when it is started until the engine is warm. The dealership has tried to replace sensors and it continues to do the same thing. Toyota claims it is operating as designed as there are no computer fault codes displayed. Others have driven it and claimed that it is not normal, but toyota refuses to do anything about it - it is operating as designed. …”
NHTSA complaint #10176364, filed 2006-12, 100 miles“The vehicle started shaking uncontrollably and a loud knocking noise had come from the front of the vehicle. The driver was able to control the vehicle, and took it to the dealer. However, the mechanic maintained that the problem could not be duplicated. The vehicle would knock and shake after being started. When driving on the freeway, the vehicle would rattle and felt as if the vehicle could not be controlled due to the shaking of the motor. …”
NHTSA complaint #10117843, filed 2005-05, 397 miles“The throttle body stuck open causing it to rev to excessive rpms and then would finally die. This happened while driving at highway speed in 7/08. The throttle body was replaced and then once again it failed, this time sticking closed causing the car to die in an intersection. This was in 3/11 (this year) with only 73k on it total miles ( only 30k on this throttle body). When we received the new part this time, it had been obviously redesigned with a vent allowing corrosion not to occur. This is a real hazard when you have no control over engine speed while driving. …”
NHTSA complaint #10424101, filed 2011-09, 43,561 milesRelated service bulletins
- 10037584Mar 2, 2011Toyota: there may be damaged cylinder head bolts threads. There is a process to repair them. 2005-2007 tc.
- 10021543Apr 6, 20072az-fe engine block.
- 10016628Aug 1, 2005Excessive sulfur dioxide odor.
Engine cooling: other model years
Other parts of the 2005 Scion TC
50 complaintsBody and structure
31 complaintsAir bags
20 complaintsOther or unknown
11 complaintsBrakes
10 complaintsTires
10 complaintsEngine
9 complaintsTransmission and drivetrain
8 complaintsVehicle speed control
8 complaintsEquipment
7 complaintsFuel system
5 complaintsLatches, locks and linkages
5 complaints
← All problems reported for the 2005 Scion TC
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