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.
The worst 2010 Lexus RX450H problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Engine4
- Airbags3
- Electrical3
- Fuel system3
- Brakes2
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Engine4
- Airbags3
- Electrical3
- Fuel system3
- Brakes2
- Acceleration1
- Seat belts1
- Steering1
Recalls
No recalls on record for this model year.
Defect investigations
Pedestrian alert sounds
the federal safety agency received a petition on or about July 18, 2022, requesting that Federal Motor Vehicle Safety Standard (FMVSS) 141 be applied to all electric and hybrid vehicles operating in the United States. The petition can be reviewed at under ODI Number 11486072. FMVSS 141 establishes performance requirements for pedestrian alert sounds for motor vehicles. The standard applies to hybrid and electric vehicles that have a gross vehicle weight rating of 4,536 KG or less or are defined as low-speed vehicles. The standard became fully applicable to all such vehicles manufactured on or after March 1, 2021.On January 27, 2023, the federal safety agency opened Defect Petition (DP) 22-005 to evaluate the subject matter described in the petition. On June 24, 2023 and as supplemented on June 25, 2023, the petitioner notified the federal safety agency he was withdrawing his petition. The petitioner indicated that, based on his review of data, there is no justification for asserting potential benefits that could be derived from actions sought by my petition. Based on the petitioner's withdrawal, DP22-005 is closed. Closure of this DP does not represent a determination by the federal safety agency regarding the subject matter of the petition.
DP22005
Technical service bulletins for the 2010 Lexus RX450H 201
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- DP: Customer Support Program 19LE05 expired December 1, 2022.
- Ti: 19LE05
- DP: Limited Service Campaign KLG expired December 01, 2022
- This bulletin includes basic procedures for performing a rescue charge on Ni-MH high voltage (HV) batteries
- Lexus Safety Recall and Service Campaign
- This Service Bulletin includes procedures to replace damaged or loose front carpet floor retainer(s)...
- Condition in which a musty smell is present
- POL: This consolidated Tire Warranty Guide contains the complete warranty terms for all brands of ground...
- For proper calibration of the millimeter wave radar sensor, the vehicle and radar target must be on a...
- Condition where the HVAC evaporator drain hose has become obstructed with an insect nest
What 2010 Lexus RX450H owners say
Most recent owner complaints, unedited.
Outer mirror, driver's side, turns down when placed in reverse and will stay in the down position. Occasionally it will turn down on its own when changing from park. When going to drive, there is no way to see oncoming traffic on the left without turning head and looking: something a driver isn't expecting. This always occurs going from stationary to motion. Occurance in random.
The steering lock actuator failed in the locked position while the vehicle was stationary. Although in this instance there was no safety hazard, it seems possible that this failure could have occurred while the vehicle was in motion, which would have caused the steering to lock and consequent loss of control of the vehicle. I informed lexus us about this failure.
Tl *the contact owns a 2010 lexus rx450h. While driving 55 MPH, the oil from the engine depleted and the engine seized without warning. The vehicle was towed to sewell lexus in fort worth, texas where it was diagnosed that the oil coil hose ruptured, which depleted all of the oil, and the engine seized and fractured. Hendrick lexus kansas city in merriam, kansas and the manufacturer were made aware of the failure. The vehicle was not repaired. The failure mileage was 168,022.
I have been a loyal lexus owner for several years and have meticulously maintained my vehicle at only lexus dealerships. While operating the vehicle 10 days ago, the oil cooler hose burst, which could have resulted in a major safety issue (engine failure/seizure while driving) with catastrophic engine failure. Lexus has known about this issue and has covered it for many other vehicles with 150k miles or less, hence the "enhanced warranty" about which I had no knowledge. I have 151k miles and they refuse to cover it or offer any kind of compensation for the expense of replacing the hose. They do not deem it a safety issue, which is absurd for the reason stated above. Apparently there was a warranty "enhancement" offered a couple of years ago, about which I was never made aware, by lexus or by any of the technicians who have serviced my car over the years. If lexus offered this warranty, they clearly knew this was a potential issue with this vehicle. Now that the issue has happened to my car, they won't cover it, as I'm "out of warranty" with a warranty I never knew was offered to me in the first place. I will never own another lexus - they have lost my business and my trust,
We were in a major accident in may of 2015 and air bags exploded and shot fragments out at us and we had to be brought to er by ambulance. And I had to have surgery.
The hybrid computer system shorted due to a leak where the roof rack connects to the roof. This computer is below the rear seat and is next to the hybrid batteries. This compartment should be sealed to prevent water intrusion, and in no situation should water from the roof be able to reach this compartment. Water entering this area is extremely dangerous and could cause a fire or the car to cease functioning correctly while it is in motion.
Cpsc: lexus hybrid: consumer stated while driving at highway speed, the engine shut down and the a warning message of hybrid engine brake and awd failure illuminated on the dashboard. The accelerator stopped functioning and the consumer had to pull over to the shoulder. The garage reported the fuel pump and the fuel solenoid had failed. Both needed to be replaced along with the vapor recovery system.
Radio will change automatically by itself from radio to other source cd, change to sat and eject a cd without touching anything. Lexus couldn't find anything wrong when taken in. They updated the firmware, but it still continues to change from radio to sat and ejects cd's. I asked if there was a recall or other know complaints about this. I was told no by lexus. I searched online and I find this happens to other customers so I wanted to document this defect.
Lexus rx450 was traveling down a one-way road and approached a stop sign going 35 MPH. After running through the stop sign during late hours of the night, the lexus drove directly into a dark private parking lot, continuing at the 35 MPH, bouncing through a deep pothole at the parking lot entrance (breaks were pushed but not engaged) which LED to the collision with a perpendicular, properly parked limo. No brake impressions on the ground although brakes were pushed. Air bags did deploy. Passenger was knocked out, sustained a concussion and had to be pulled out of vehicle. Car was retitled as salvage, as well as the limo that was hit.
Compare the 2010 Lexus RX450H
Other model years
20102023
Questions about the 2010 Lexus RX450H
Is the 2010 Lexus RX450H reliable?
Owners have filed 13 complaints about the 2010 Lexus RX450H, close to a typical RX450H model year.
What is the 2010 Lexus RX450H year score?
The 2010 Lexus RX450H scores 75 out of 100 (average). The score compares it with the other model years of the Lexus RX450H: 75 is a typical year, 50 means twice the usual complaints, and serious complaints and recalls lower it.
What is the most common problem with the 2010 Lexus RX450H?
Engine and cooling, with 4 complaints. Next is airbags (3).
How many recalls does the 2010 Lexus RX450H have?
No recalls on record.
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