Problems · NHTSA complaints
2008 Lexus RX400H problems
Owners filed 127 complaints about the 2008 Lexus RX400H with NHTSA between Nov 2007 and Aug 2026. The most-cited component is vehicle speed control (23).
Complaints
127
Filed with NHTSA
Crashes
23
Reported by owners
Fires
2
Reported by owners
Injuries
11
People reported injured
Deaths
0
Reported to NHTSA
Complaints by component
One complaint can cite several components
- Vehicle speed control23
- Service brakes23
- Engine17
- Electrical system10
- Structure10
- Service brakes, hydraulic10
- Steering10
- Air bags9
- Power train6
- Exterior lighting6
- Visibility/wiper4
- Electronic stability control (esc)3
- Fuel/propulsion system3
- Service brakes, electric3
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 Nov 12, 2026NHTSA vehicle page
When complaints were filed
Does it get worse with age? Complaints per calendar year filed
1
2
1
20
4
4
6
6
7
5
4
6
13
11
10
11
4
4
5
3
View as table
| Model year | Complaints filed per calendar year |
|---|---|
| 2007 | 1 |
| 2008 | 2 |
| 2009 | 1 |
| 2010 | 20 |
| 2011 | 4 |
| 2012 | 4 |
| 2013 | 6 |
| 2014 | 6 |
| 2015 | 7 |
| 2016 | 5 |
| 2017 | 4 |
| 2018 | 6 |
| 2019 | 13 |
| 2020 | 11 |
| 2021 | 10 |
| 2022 | 11 |
| 2023 | 4 |
| 2024 | 4 |
| 2025 | 5 |
| 2026 | 3 |
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
Vehicle speed control
23 reports18 crashes
“Dear Sir or Madam. My name is [XXX], [XXX], [XXX] living in [XXX]. I bought my 2008 Lexus RX400h car, used, in 2014 at a non-Lexus dealership in the [XXX] where I used to live. My Lexus VIN is: [XXX]. I've been satisfied with the car..until today. The car had been running smoothly forever, and this morning while I was driving I came to a stop (red light) and the car suddenly shut down completely, including the loss of lights, and the whole dashboard went dark. Other cars behind me were honking their horns. I could not even turn on the hazard lights. After 1-2 minutes, all of the lights/warnings started coming on one after the other. I started the car again and run around three different errands without having further issues. I checked online to see if other owners had experienced a similar situation, which is the case. One person said that there had been two recalls in 2011 and 2013, both related to the inverter module inside the hybrid system. Although, I called today a Lexus dealership, [XXX], located in [XXX], and I was told there are no recalls for the VIN number that I provided. Another owner said she/he went to a Lexus dealer in [XXX] and she was told it…”
Service brakes
23 reports3 crashes
“While trying to leave my driveway my brakes went out almost causing me to go through a pasture fence. On the dash board popped up ABS and VSC warning. Now the module and regulator is making a horrible sound. And clicks”
Engine
17 reports1 fire
“Vvt-I oil line failure. Limited service campaign ended in Dec 2021. No notice sent, no repairs suggested at the dealership within the eligible period. Vvt-I failed and engine lost all oil in minutes while driving, coating the front passenger brake caliper and rendering the breaking dangerously difficult on the passenger side on the highway.”
Electrical system
10 reports1 crash1 fire
“Odometer Fraud. The contact purchased a 2008 Lexus RX 350. The contact discovered a mileage discrepancy after the purchase. The vehicle was a private sale. At the time of purchase, the vehicle mileage was 114,000. It was later discovered that the mileage on the Owner’s Title was 265,000 based on a Carfax Report. After speaking to the son of the former owner, the contact was informed that the last known mileage was 278,000.”
Structure
10 reports1 crash
“I HAVE HAD TO CONTINUOUS ISSUES WITH MY VEHICLE SINCE I BECAME THE OWNER OF IT. #1 THE HEADLAMP GETS VERY FOGGY. EVERY 2-3 MONTHS I TAKE IT TO THE CAR WASH, THEY POP IT OUT AND CLEAN IT. I GET THIS DONE BECAUSE THE LAMP LOOKS VERY DIM WHILE I AM DRIVING IT AT NIGHT AND IT MAKES IT DIFFICULT TO SEE THE ROAD. THIS IS A SAFETY ISSUE. THE SECOND ISSUE IS THAT THE DASHBOARD IS HEAVILY CRACKED TO THE POINT WHERE MY SON IS ABLE TO PICK OFF PIECES AND TRIES TO PUT IT IN HIS MOUTH. I AM AFRAID OF WHAT TOXIC CHEMICALS THE CRACKED DASHBOARD IS EXPOSING ME AND MY CHILD TO. I CALLED LEXUS TO GET THESE REPAIRED UNDER THE WARRANTY ENHANCEMENT PROGRAM AND THEY TOLD ME THAT BOTH OF THESE ARE NOW 1 YEAR PAST THE WARRANTY. I HAVE BEEN THE OWNER OF THIS CAR SINCE 2017 AND I NEVER GOT NOTICE OF EITHER OF THESE WARRANTY ENHANCEMENTS. BEFORE THAT MY DAD OWNED IT AND HE ALSO NEVER RECEIVED NOTICE. I HAVE FILED A CASE # WITH LEXUS [XXX]. THEY NOW TELL ME THERE IS NOTHING THEY CAN DO AND I WILL HAVE TO PAY OUT OF POCKET FOR ISSUES THAT HAVE BEEN EXISTING FOR THE LAST 4-5 YEARS! *TR”
Service brakes, hydraulic
10 reports2 crashes
“The contact owns a 2008 Lexus RX400H. The contact stated that while driving at an undisclosed speed, the vehicle made an abnormal sound with the VSC message displayed and the ABS and traction control warning lights illuminated. Additionally, the vehicle made the same abnormal sound for 15 minutes after the vehicle was turned off. The vehicle was taken to an independent mechanic who diagnosed that the ABS accumulator pump needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure but informed the contact that the extended warranty had expired. The failure mileage was approximately 138,140. Consumer stated extended warranty program for the defective part but that program expired in 2018. When the ABS actuator pump fails, it stops regulating and maintaining hydraulic pressure in the brake lines which can lead to brake failure. No recall was ever issued despite the fact that a failure of the braking system.”
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 12, 2026
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.