Problems · NHTSA complaints

2017 Lexus RX350 problems

Owners filed 94 complaints about the 2017 Lexus RX350 with NHTSA between Mar 2017 and Oct 2026. The most-cited component is service brakes (17).

Complaints
94
Filed with NHTSA
Crashes
20
Reported by owners
Fires
0
Reported by owners
Injuries
9
People reported injured
Deaths
1
Reported to NHTSA
01 —By component

Complaints by component

One complaint can cite several components
  1. Service brakes17
  2. Engine16
  3. Fuel/propulsion system11
  4. Vehicle speed control8
  5. Air bags7
  6. Forward collision avoidance7
  7. Electrical system7
  8. Power train7
  9. Structure4
  10. Visibility4
  11. Service brakes, hydraulic3
  12. Seats3
  13. Fuel system, gasoline3
  14. Visibility/wiper3

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 10, 2026NHTSA vehicle page
02 —Trend

When complaints were filed

Does it get worse with age? Complaints per calendar year filed
View as table
Model yearComplaints filed per calendar year
20176
201823
20195
20203
202110
202216
202310
20247
20257
20267

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.

03 —Owner reports

Top problems in owners’ words

Verbatim from NHTSA complaints, newest first

Service brakes

17 reports6 crashes
“My vehicle is experiencing a mechanical failure of the brake actuator/booster assembly, manifested by a "squawk/bark" noise and abnormal pedal feel during braking. This is a known defect recognized by Lexus under Customer Support Program 23LE04. The dealership technician confirmed the noise is present and recommended a full replacement of the ABS actuator. However, Lexus is denying coverage because the onboard computer has not yet triggered a Diagnostic Trouble Code (DTC). By denying the repair, Lexus is requiring me to operate a vehicle with a confirmed mechanical brake malfunction, which increases the risk of a crash, increased stopping distance, or total brake power assist failure. March 2021 (60k miles): Actuator was replaced under warranty for this exact failure. December 2021 (74k miles): The failure recurred. Lexus and the dealer refused to cover the diagnosis/bleed, forcing me to drive a defective vehicle. February 2026 (110k miles): A Lexus dealer confirmed the part is failing again and quoted $3,000 for replacement. Despite a manufacturer program (CSP 23LE04) existing for this exact part, Lexus refuses to honor it without an electronic code, even…”
Owner complaint to NHTSAFiled Feb 15, 2026Service brakesODI 11718075

Engine

16 reports1 crash
“3 months before the accident the power steering light came on twice and went off. The day of the accident the brake light came on when I started the car that day. It disappeared when I was put in drive. I was entering onto the highway to merge with the traffic. Another car waiting for the light to turn green so he could enter also. My car didn’t stop because my brakes failed and the collision avoidance system didn’t work either. No sounds nor warnings. I have photos of the message that was displayed on the dashboard. Tried sending photos but it didn’t work.”
Owner complaint to NHTSAFiled Jul 23, 2025Electrical system, Service brakes, EngineCrash reportedODI 11675681

Fuel/propulsion system

11 reports
“While driving my vehicle on a major road the car suddenly started shaking, all the lights/warnings showed and my speed dropped to 10 miles per hour. I nearly avoided being hit. Had the car towed to a service center who informed me that my code was 20LA01 and my fuel pump was the issue with an active national recall on the part. They told me to tow it to Lexus since it would be covered. Lexus refuses to cover the cost since my VIN is not listed even though my car has the right code , displaying the obvious issues , and agree that is the problem . How do I get my VIN recorded as part of this recall and to help others that might encounter this.”
Owner complaint to NHTSAFiled Oct 31, 2026Fuel/propulsion systemODI 11774846

Vehicle speed control

8 reports5 crashes
“The contact owned a 2017 Lexus RX 350. The contact stated while making a left turn exiting a car wash, the vehicle unintendedly accelerated independently and crashed into the commercial building where it came to a stop. The brake pedal was depressed but the vehicle was in full throttle and failed to stop. The air bags did not deploy. No warnings light illuminated. No Medical Attention was needed. During the failure, the contact was the only occupant seated in the vehicle. The contact sustained injuries to the head, black and blue marks on the left side of her leg and shoulder as well as her left knee sustained swelling the right of her bottom was also bruised. A police report was filed. The vehicle was towed to impound lot by the insurance company and then towed to a salvage lot. The vehicle was not taken to a dealer or independent mechanic to be diagnosed or repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 53,000.”
Owner complaint to NHTSAFiled Mar 24, 2025Vehicle speed controlCrash reportedODI 11650124

Air bags

7 reports7 crashes
“After slowly making a left into a parking space at Dunkin Donuts and trying to deploy my brakes, my car lunged forward spontaneously accelerating, jumped two curbs and hit a barrier and the window of the store. The impact of the crash wrecked my front end and the radiator was damaged and was laying on the ground. With this intense impact, the airbags did not deploy on impact. My insurance agency totaled the car. After the crash the warning came on the screen that the Collision System had malfunctioned.”
Owner complaint to NHTSAFiled Aug 14, 2026Air bags, Forward collision avoidanceCrash reportedODI 11757073

Forward collision avoidance

7 reports4 crashes
“I WAS SITTING AT A COMPLETE STOP FOR MORE THAN 45 MINUTES BEHIND A FATALITY ACCIDENT ON THE HIGHWAY THEY HAD CLOSED WHILE OCCASIONALLY REMOVING FOOT FROM BRAKE TO INCH FORWARD A FEW FEET A BEST AND THEN STOP AGAIN NEVER TOUCHING THE ACCELERATOR WHEN I REALIZED AT ONE POINT TRAFFIC BESIDE ME WAS MOVING, I THOUGHT, IT WAS MY RX 350 WHILE PRESSING BRAKE ALL THE WAY TO THE FLOOR WITH NO RESISTANCE I ATTEMPTED TO PUT THE CAR IN NEUTRAL TO SEE IF IT WAS SLOW ME DOWN AS AN UPCOMING CRASH WAS UNAVOIDABLE. NO BRAKE ASSIST, PRECOLLISON WARNING OR ASSIST, NO EMERGENCY BRAKING, NO RESISTANCE FROM BRAKE PEDAL AND ***NO WARNING LIGHTS CAME ON AT ALL PRIOR TO IMPACT WITH THE BACK OF A STOPPED SEMI TRUCK** and during the entire incident the speedometer remained at zero or moved a tiny bit off of zero as if it was pulsing somehow and the accelerator was never touched while car felt like I was being pushed from behind, randomly accelerating on its own before impact.”
Owner complaint to NHTSAFiled Sep 7, 2023Unknown or other, Forward collision avoidanceCrash reportedODI 11543106
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 10, 2026

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.