Skip to content
Engine coolingPart report

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 miles

Related service bulletins

Engine cooling: other model years

YearComplaintsShare of year
2025110%
201931%
201731%
201611%
201521%
201331%
201221%
201153%
201021%
200954%
2008184%
200722%
2006218%
200584%
2004207%
20034618%
2002238%
20011712%

Other parts of the 2001 Toyota Highlander

Visibility (wipers, defrost, mirrors)
26 complaints
Brakes
19 complaints
Vehicle speed control
15 complaints
Body and structure
13 complaints
Transmission and drivetrain
13 complaints
Air bags
10 complaints
Tires
9 complaints
Electrical system
5 complaints
Fuel system
5 complaints
Other or unknown
5 complaints
Equipment
4 complaints
Seat 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