2015 Toyota Highlander Engine cooling Problems
- Complaints
- 2about this part
- Share
- 1%of 192 total for the year
- Median mileage
- 5,784miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the engine cooling of the 2015 Toyota Highlander, 1% of the 192 complaints for this model year. Where a mileage was given, the median is 5,784 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.
“The contact owns a 2015 Toyota Highlander. While driving approximately 40 MPH, an abnormal odor emitted inside the vehicle. The driver and passenger sustained headaches and sore throats. The vehicle was taken to the dealer where the technician stated that an undercoating was applied to the catalytic converter during production that emitted a chemical odor inside the vehicle. The manufacturer was not notified of the failure. The failure mileage was 5. Updated 08/30/16”
NHTSA complaint #10863567, filed 2016-05, 5 miles“The contact owns a 2015 Toyota Highlander. While driving approximately 40 MPH, the subframe fractured due to the rear bolts on the frame being too tight. The vehicle was towed to a dealer where it was diagnosed that the rear bolts were not properly installed from the factory associated with the torque. The dealer inspected the subframe and stated that it did not need to be replaced. The dealer replaced the rear hybrid drive motor, rear differential, the entire exhaust system from the motor to the muffler, and the driver side suspension control arm. …”
NHTSA complaint #10839563, filed 2016-03, 11,562 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.
- 10179698Aug 5, 2020TSB: Some 2003 ? 2020 model year Prius, Prius C, Prius V; 2006 ? 2019 model year Highlander Hybrid Vehicle; 2007 ? 2020 Camry Hybrid Vehicle; 2013 ? 2020 model year Avalon Hybrid…
- 10178524Jul 30, 2020TT: HVAC drain tube is found to be blocked/clogged.
- 10131893Mar 27, 2017TT: Rev2 Some Customers may complain about a Hybrid Vehicle Battery cooling system warning message. This warning message may appear when the HV Battery cooling system loses…
- 10087945Jul 27, 2016Tsb: some 2014 2015 model year highlander vehicles may exhibit a condition when the a/c system is turned on, it may take a longer than expected amount of time until it begins…
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 2015 Toyota Highlander
52 complaintsOther or unknown
43 complaintsBody and structure
32 complaintsSteering
25 complaintsBrakes
15 complaintsVisibility (wipers, defrost, mirrors)
13 complaintsVehicle speed control
11 complaintsEngine
10 complaintsExterior lighting
10 complaintsAir bags
8 complaintsTransmission and drivetrain
7 complaintsElectronic stability control
4 complaints
← All problems reported for the 2015 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