2001 Toyota Highlander Engine cooling Problems
- Complaints
- 17about this part
- Share
- 12%of 137 total for the year
- Median mileage
- 41,000miles
- Trend
- StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.
NHTSA recorded 17 complaints about the engine cooling of the 2001 Toyota Highlander, 12% of the 137 complaints for this model year. Where a mileage was given, the median is 41,000 miles. 1 a fire, according to the filers.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Car began surging on three occasions. Car was parked, in park at the curb, and engine was surging from idle to aprox 2500 RPM. I plugged an obd into the car to look for error codes and there were none. I cycled the obd again and the surging stopped. ??”
NHTSA complaint #10314488, filed 2010-02, 52,000 miles“We bought our Highlander just over a year ago and we have to constantly put oil into vehicle. It only has 80,000 on it, and we have to put about a liter of oil into it every other week. The manufacturer of our area checked it twice, and determined that we need another engine, but the cost was around $7000 in canadian that engine would come from japan, and it would be a used one, and would only warranty that for 1 year. Then what am completely disgusted!! …”
NHTSA complaint #10187170, filed 2007-04, 75,000 miles“2001 Toyota Highlander purchased new. About once a year it accelerates on its own. Reported problem to Toyota dealer in 2002 or 2003 - have receipt. We can stop the car with firm pressure on the brake. In most cases when we put the transmission into park the engine continued to race at high RPM. I can't remember all incidents, but believe that in some cases was able to slow the engine down by keeping my foot on the brake and putting the car back into drive. Other times I turned off the ignition. When I restart the car it is fine. …”
NHTSA complaint #10326579, filed 2010-04, 20,000 miles“My Highlander had sludge in the engine. The engine was cleaned out. I was told that if I change my oil every 3,000 miles instead of 7,500.00 that would not happen. The Toyota manuel states every 7,500. Remember my car only has 18,202 miles on it. It's not even 2 yr old yet. The service advisor assured me that if I change my oil every 3,000 and not every 7,500 like the manual says that if this happen again they would cover the problem.”
NHTSA complaint #10070044, filed 2004-01, 18,000 miles“Oil sludge issue. The Toyota was in the shop for 1.5 weeks. The final bill did not include any totals, but the service manager indicated parts alone were close to $1600. We were very disturbed with Toyota's position that this problem was a maintenance issue and that they would only repair this issue once within the first eight years. They indicated that we followed the wrong maintenance schedule of normal rather than severe conditions for florida. …”
NHTSA complaint #10070964, filed 2004-01, 32,000 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…
- 10037592Mar 2, 2011Toyota: there may be damaged cylinder head bolts threads.
- 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…
- 10021263Mar 26, 2007Reprogram the engine control module (ecm).
- 10020868Sep 7, 2005Ecm calibration update. Mil on dtc p0420 and/or p0430.
- 10015494Mar 24, 2005Fuel injector ticking noise. Update. *tt original.
Engine cooling: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2025 | 1 | 10% |
| 2019 | 3 | 1% |
| 2017 | 3 | 1% |
| 2016 | 1 | 1% |
| 2015 | 2 | 1% |
| 2013 | 3 | 1% |
| 2012 | 2 | 1% |
| 2011 | 5 | 3% |
| 2010 | 2 | 1% |
| 2009 | 5 | 4% |
| 2008 | 18 | 4% |
| 2007 | 2 | 2% |
| 2006 | 21 | 8% |
| 2005 | 8 | 4% |
| 2004 | 20 | 7% |
| 2003 | 46 | 18% |
| 2002 | 23 | 8% |
| 2001 | 17 | 12% |
Other parts of the 2001 Toyota Highlander
26 complaintsBrakes
19 complaintsVehicle speed control
15 complaintsBody and structure
13 complaintsTransmission and drivetrain
13 complaintsAir bags
10 complaintsTires
9 complaintsElectrical system
5 complaintsFuel system
5 complaintsOther or unknown
5 complaintsEquipment
4 complaintsSeat belts
4 complaints
← All problems reported for the 2001 Toyota Highlander
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