AI DamageLexus GS450H: problems, complaints, bulletins
Summary for the Lexus GS450H across 2 model years: 20 owner complaints and 0 NHTSA service bulletins, plus repair videos. Pick a year for details.
Model years
What fails most often
- 1 Service brakes 35% of all complaints
- 2 Engine 20% of all complaints
- 3 Powertrain 15% of all complaints
- 4 Electrical system 10% of all complaints
- 5 Air bags 5% of all complaints
- 6 Engine and cooling 5% of all complaints
- 7 Fuel/propulsion system 5% of all complaints
- 8 Steering 5% of all complaints
- Service brakes: 7 complaints (35% of all).
- Engine: 4 complaints (20% of all).
- Powertrain: 3 complaints (15% of all).
- Electrical system: 2 complaints (10% of all).
- Air bags: 1 complaints (5% of all).
Symptoms owners describe
How many of the 20 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Service brakes | 7 | 0 | 0 |
| Engine | 4 | 0 | 0 |
| Powertrain | 3 | 0 | 0 |
| Electrical system | 2 | 0 | 0 |
| Air bags | 1 | 0 | 0 |
| Engine and cooling | 1 | 0 | 0 |
| Fuel/propulsion system | 1 | 0 | 0 |
| Steering | 1 | 0 | 0 |
| Structure | 1 | 0 | 0 |
| Suspension | 1 | 0 | 0 |
| Visibility | 1 | 0 | 0 |
| Other | 2 | 1 | 0 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
Air bags - lexus refused to cover under warranty deployed airbags due to lightly scrubbing a curb power train - the auxiliary oil pump on the automatic transmission failed, as it is commonly known to do. The bearings inside the pump wear down over time and eventually sieze.
The contact stated that the vehicle stalled without warning while driving 35 mph. The contact stated that the check hybrid indicator illuminated after the failure occurred.
On august 29, 2017, while driving to arizona from california, the radiator cap failed causing the engine to overheat. I was stranded 90 miles north of the nearest town in 110-degree heat with substandard cell phone service. This overheating caused substantial engine damage which made the vehicle inoperable.
When starting my car, I noticed the smell of gasoline while sitting in the driver's seat. I knew something was obviously wrong. I took my car to the nearest auto shop where they troubleshot the gasoline leak to a fuel pressure pulsation damper on the fuel rail of the engine.
I rolled over to side of street, while noticing smoke coming from engine compartment on passenger side. Opened hood and saw a fire by engine wall. I had a couple of bottles of water with me. I pored water on fire and after one minute distinguested the fire.
The check engine, stability control, and electronic stability program warning lights illuminated. In addition, the vehicle vibrated severely when restarted and failed to accelerate when the accelerator pedal was depressed. The failure occurred whenever the vehicle was operated.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
What to check before buying
- Service brakes. Pedal feel, ABS operation, leaks, discs and hoses.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Powertrain. Shift quality under load, harsh shifts, transmission codes, CV joints.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
Other models of this make
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-05.