Home · 2023 Lexus RX 350h · Complaints

What 57 owners told NHTSA about the 2023 Lexus RX 350h

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (57)Crash / fire / injury (6)Engine (10)Electrical system (9)Body & structure (8)Transmission & drivetrain (7)Lane Departure (4)Airbags (3)Fuel system (3)Visibility & wipers (3)Backup camera & sensors (2)Driver assistance (2)

4 of 57 complaints match · Lane Departure · clear filters

Sep 4, 2024Driver assistanceLane Departure

My RX350 experienced malfunction of the Advanced Driver Assistance Systems (ADAS). Messages regarding the malfunction of the ADAS first appeared around mid-August 2024. Upon inspection during the week of August 27 2024, the Lexus dealer, Akron-Canton of Lexus, indicated that the malfunction was caused by rats chewing on the soy-based wiring. The dealership replaced the wiring at a cost of $1,295.10. This is a problem caused by faulty design and inappropriate parts and design. It is inconceivable that car parts would be made of animal food. This put me and my family at serious risk of accident, as my reliance on warnings was severely compromised. Lexus needs to immediately replace the soy-covered wiring with something that is not edible by rodents or any other wildlife. In the interim, an equitable solution would be to reimburse the actual costs as well as compensate for the risks thrust upon drivers by their reckless use of inappropriate material. The repair invoice is attached.

NHTSA ODI 11612488

Jul 23, 2024Lane Departure

When driving Lexus 2023 RXH with all safety except lane assist features, it suddenly veers to the right under specific conditions below - Have enabled ProActive Driving Assist - The car is travelling on a straight road, and has line markings (yellow left side, white right side) - There is a right turn to the side of the road, and the white shoulder markings taper off and merge to the side of the road (where there is a right turn) The car suddenly veers right and follows the white shoulder marking ignoring the yellow central line and the straight road. Seems very dangerous. Note that Lane Keeping Assistance is disabled (but I checked it since it needs something checked), Adaptive Cruise Contro is not engaged (inner road), but other options are all enabled, including Lexus feature called ProActiveDriving Assist. This is happening especially after the June 2024 firmware upgrade (or after Dealer service)

NHTSA ODI 11604149

Dec 5, 2023Lane Departure

I bought vehicle on May 31, 2023. In October 2023, while I was driving, a warning came on saying system malfunction, to visit dealer. I left my car with Lexus Dealer on Friday, I didn't get my car back until the following Tuesday. Then it happened again on 11/28/23 again the warning light came back on indicating system malfunction, visit dealer, and received the car back on 12/4/23. My vehicle is only 4174 miles.

NHTSA ODI 11558569

Jul 27, 2023Lane Departure

Purchased a brand new Lexus RX 350h on April 28, 2023. Within 2-3 weeks, the vehicle started issuing alerts that parts of the ADAS were malfunctioning, and therefore the vehicle was disabling the entire ADAS. This warning would come on while driving, and even after clearing the warning, it would pop back up within seconds. Took the new car to the dealer over 4 weeks ago to have this addressed, and they still can't figure out how to replace the faulty part and reprogram the vehicle. This is a brand new car with only about 1,000 miles on it. The dealer has indicated that Lexus Corporate is seeing this issue with a bunch of their new 2023 cars, and Lexus doesn't have the new parts nor the manpower in place to address this issue.

NHTSA ODI 11534865

Working with the data? Download all 57 complaints as CSV · fetched from NHTSA July 21, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2023 Lexus RX 350h verdict →