Problems · NHTSA complaints
2012 Lexus RX450H problems
Owners filed 15 complaints about the 2012 Lexus RX450H with NHTSA between Jun 2018 and Sep 2026. The most-cited component is electrical system (4).
Complaints
15
Filed with NHTSA
Crashes
0
Reported by owners
Fires
0
Reported by owners
Injuries
0
People reported injured
Deaths
0
Reported to NHTSA
Complaints by component
One complaint can cite several components
- Electrical system4
- Engine3
- Service brakes2
- Steering1
- Forward collision avoidance1
- Structure1
- Air bags1
- Tires1
- Service brakes, hydraulic1
- Electronic stability control (esc)1
- Suspension1
- Exterior lighting1
- Power train1
- Vehicle speed control1
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
Data from NHTSA Complaints API · synced Oct 29, 2026NHTSA vehicle page
When complaints were filed
Does it get worse with age? Complaints per calendar year filed
1
1
0
1
2
1
0
5
4
View as table
| Model year | Complaints filed per calendar year |
|---|---|
| 2018 | 1 |
| 2019 | 1 |
| 2020 | 0 |
| 2021 | 1 |
| 2022 | 2 |
| 2023 | 1 |
| 2024 | 0 |
| 2025 | 5 |
| 2026 | 4 |
Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.
Top problems in owners’ words
Verbatim from NHTSA complaints, newest first
Electrical system
4 reports
“Odometer Fraud. The contact owns a 2012 Lexus RX350. The contact purchased the vehicle, and it was discovered that there was a mileage discrepancy. The vehicle was a private sale. At the time of the purchase, the mileage was 127,832. The contact stated that at the time of registration, it was discovered that the mileage was 257,193.”
Engine
3 reports
“Alternator completely shut down on Sunday,XXX. Battery warning light came on out of the blue on Sat, XXX at 8:45 PM in Independence, MO in front of Walmart on [XXX], had to go autozone on [XXX] in [XXX]. Test came back showing Alternator failure. Now power steering is gone and prob battery too. All interior electric systems shut down also. Headlight bulbs became affected within 1 month of purchase from dealership on XXX. Replacement bulbs for dims done last week.”
Service brakes
2 reports
“failed Brake Actuator”
Steering
1 report
Forward collision avoidance
1 report
Structure
1 report
“Pearl White (077) paint is delaminated from metallic car surfaces. The paint appears to be separating from the surface and peeling/cracking, not consistent with normal wear alone. I previously reported this concern to Lexus Corporate.”
Data from NHTSA Complaints API (owner reports, unverified) · synced Oct 29, 2026
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.