2010 Lexus RX450H Engine cooling Problems
- Complaints
- 1about this part
- Share
- 8%of 13 total for the year
- Median mileage
- 185,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the engine cooling of the 2010 Lexus RX450H, 8% of the 13 complaints for this model year. Where a mileage was given, the median is 185,000 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.
“The contact owns a 2010 Lexus RX450H. The contact stated that while driving at an undisclosed speed, the engine cooler line fractured and the vehicle lost oil very quickly. No warning lights were illuminated. The vehicle was towed to the dealer to be diagnosed. The contact was informed that the engine cooler line needed to be replaced. The manufacturer was made aware of the failure, but the vehicle was out of the warranty. The failure mileage was 185,000.”
NHTSA complaint #11506023, filed 2023-02, 185,000 milesRelated service bulletins
- 10179595Aug 4, 2020TSB: Some 2006 - 2020 model year Lexus hybrid vehicles may exhibit an excessive buildup of dust, lint, or debris in the HV battery cooling fan or intake filter. This condition…
- 10111133Jul 6, 2015LSB: Some 2010 - 2015 model year RX 450h vehicles may exhibit a condition of MIL "ON" with DTC(s) P2111 and/or P0A0F after a cold soak. Follow the Repair Procedure in this…
- 10111361Feb 10, 2015LSB: Some 2010 model year RX 450h vehicles may exhibit a MIL "ON" condition with Diagnostic Trouble Code (DTC) P0430 stored in the Engine Control Module or ECM (SAE term…
- 10109592Aug 11, 2014Tech Tip: Starting with the 2010 Model Year, Lexus began a gradual transition to the use of synthetic 0w-20 viscosity engine oil. There are multiple benefits of this oil…
- 10132754Jul 31, 2014Dealer Letter: In our continuing efforts to ensure the best in customer satisfaction, Lexus is announcing a Warranty Enhancement Program to extend the warranty coverage for…
- 10132749Jul 31, 2014Region Letter: In our continuing efforts to ensure the best in customer satisfaction, Lexus is announcing a Warranty Enhancement Program to extend the warranty coverage for…
- 10057003Jul 31, 2014Lexus: some of the vehicles are experiencing oil leaks from the engine coolers.
- 10056509Jul 13, 2014Lexus: see document search button for owner letter. There is a seepage or oil leakage on some vehicles, coming from the engine oil cooler pipe that is covered by the limited…
- 10132808May 12, 2014TSB: Some vehicles in particular geographic areas may exhibit a condition where the HVAC Evaporator Drain Hose has become obstructed with an insect nest. An insect repellent…
- 10132146Oct 2, 2013If a customer states there is an unpleasant odor in the vehicle from the HVAC system, there are various factors that may be involved.
Engine cooling: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2010 | 1 | 8% |
Other parts of the 2010 Lexus RX450H
3 complaintsElectrical system
3 complaintsEngine
3 complaintsBrakes
2 complaintsFuel system
2 complaintsHybrid propulsion system
1 complaintsSeat belts
1 complaintsSteering
1 complaintsVehicle speed control
1 complaints
← All problems reported for the 2010 Lexus RX450H
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 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