2017 Lexus RX Problems
Owner-reported complaints filed with NHTSA, grouped by component
Data refreshed
What this page shows
Everything below is an owner-reported complaint submitted to NHTSA about the 2017 Lexus RX, grouped by the component NHTSA recorded on the report. These are not confirmed defects, and they are not recalls. NHTSA does not verify most reports before publishing them, and a category with more reports in it is not evidence that a part is defective.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Reports by component
Ranked by how many owner reports name each component category
- Engine1024.4%
- Brakes922.0%
- Driver assistance512.2%
- Interior & seats49.8%
- Fuel system37.3%
- Electrical37.3%
- Visibility24.9%
- Airbags24.9%
- Powertrain (other)12.4%
- Tires & wheels12.4%
- Body & structure12.4%
Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.
Each component in detail
What the reports in each category say, in the owners' own words
Engine
Reports naming the engine itself — including stalling, misfires, oil consumption, cooling and internal engine components.
From owner reports, verbatim
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.
1. Engine timing cover leaking 2. Oil could leak out emptying which could cause the engine to stop working at any given time 3. Problem has been confirmed by Hennessy Lexus dealership in Duluth, GA but they will not fix it. 4. Vehicle has been inspected by the dealership 5. No signs, I found out from the dealership after taking it in for an oil change
Brakes
Reports naming service brakes, the antilock braking system, brake hoses, master cylinders or the parking brake.
From owner reports, verbatim
The contact owns a 2017 Lexus RX450H. The contact stated that while driving at an undisclosed speed and depressing the brake pedal, there was an abnormal sound coming from the vehicle. The vehicle was taken to the dealer to be diagnosed. The vehicle was diagnosed with brake actuator assembly, bleeder plug cap, brake actuator cover, and brake fluid reservoir assembly failures. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 59,380.
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 though the mechanical failure has been physically confirmed by their own technicians. The component is available for inspection.
Driver assistance
Reports naming forward-collision avoidance, lane keeping, back-over prevention, cruise control and related electronic driver-assistance systems.
From owner reports, verbatim
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.
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.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Interior & seats
Reports naming seats, latches, locks, linkages and interior fittings.
From owner reports, verbatim
Summary of Issues: 1.On March 3, 2026, I contacted my service manager regarding my inability to open the driver’s side door. I also reported persistent rattling sounds coming from the interior panels and driver’s side door, extending toward the rear of the vehicle that leads to the gas cap door. I was forced to enter through the front passenger door. 2.On March 4, 2026, I dropped my vehicle off at Lexus service department. My service manager got into my vehicle and was unable to exit through the driver’s door. This presents a serious safety hazard. I expressed concern that the issue could be electrical in nature; however, I was advised that new door locks were needed. 3.On March 10, 2026, my vehicle was returned to me after being serviced, with the explanation that both front door locks had been replaced. I questioned why the passenger-side lock was replaced, as I had no prior issue with that door. 4.After picking up my vehicle, I traveled and left it parked at Austin Airport until 3/15/2026. Upon my return, I experienced the exact same issue-the driver’s door would not open. 5.On March 16th, 2026, I returned the vehicle to Lexus service department for further evaluation. This repeated inconvenience has been time-consuming and frustrating. As this is a luxury vehicle. 6.On March 18, 2026, I was notified that my vehicle was ready for pickup and was told the issue was related to the door bezel. Upon retrieving my vehicle, I immediately noticed that the driver’s door lock was visibly missing. I returned to the service department and documented the issue with photographs. I was then informed that the driver’s door panel would need to be replaced. Later that same evening, while attempting to refuel my vehicle, I encountered difficulty opening the fuel door. I again heard the same rattling and popping sound extending toward the gas tank. At this point, I am concerned for my safety and do not feel comfortable operating this vehicle.
My vehicle has 39800 miles (64k kms). I have the exact same issue with my driver side heated seat. The lowest setting may take time to warm up then gets scorching hot. Eventually after heating it up, I will turn it off manually to stop heating it, as it burns. My wife also mentions that the passenger side as well doesn’t seem to heat much. At this low of kms, I should not have this issue but saw someone else have the exact same issue. I have not taken it to the dealer yet as I fear they will charge a fee just to verify the problem. I have an old ES300 and I do not have this problem with the heard seat. My trim level is also the ultra luxury.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Fuel system
Reports naming fuel storage or delivery — tanks, pumps, lines, injectors and fuel leaks.
From owner reports, verbatim
There are recalls for 2017 Lexus RX350’s for their fuel filters being faulty. Mine is not on the list. I have taken my car to many mechanics and in the last few months I’ve had my front and back brakes replaced, new struts, new tires and more done on the vehicle and nothing is helping. They have checked my mass air flow sensor, oxygen sensors, spark plugs, transmission and everything they can think of to try and see why it is having such a hard time transferring power to the wheels and being very sluggish. I’ve replaced air filters, done fuel additives and many other things, there are no error codes or any stored codes. I am left to only think it is the fuel filter/system and my vehicle is part of the list affected. I noticed the changes in the vehicle about 20,000 or so miles ago and it’s gotten worse. I’m not sure what else I can do at this point.
The contact owns a 2017 Lexus RX350. The contact stated that prior to starting the vehicle, there was an abnormal fuel odor on the exterior of the vehicle. The contact stated that when the vehicle was started, the odor was inside the vehicle. The contact stated while driving 40 MPH, the accelerator pedal was depressed; however, the vehicle failed to respond as needed. The contact stated that while taking the vehicle to the dealer and driving the vehicle into the dealer parking lot, the service representative noticed a trail of fuel coming from the vehicle. The contact and her three kids exited the vehicle. The vehicle was diagnosed with a failed fuel pressure sensor connection and leaking fuel line. The contact was informed that the fuel pump and fuel line needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 73,403.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Electrical
Reports naming the electrical system — wiring, battery, charging, control modules, infotainment and electrical accessories.
From owner reports, verbatim
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.
On 5/8/2020, Northtown Lexus replaced or repaired the vacuum pump. Northtown Lexus required the vehicle to be returned for repair twice, following the initial repair on 5/8/2020. After three attempts, the vehicle's vacuum pump (per a factory recall) is not functioning properly. Northtown Lexus refuses to further diagnosis this defective vacuum pump and continued to decline any and all requests for repair. The vehicle operates abnormally ever since this factory recall was originally addressed by Northtown Lexus on 5/8/2020.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Visibility
Reports naming windshields, glass, wipers, defrosters and mirrors.
From owner reports, verbatim
The contact owns a 2017 Lexus RX350. The contact stated while driving at various speeds, the sunroof was rattling. The contact had taken the vehicle to the dealer where after a test drive, the contact was informed that the failure was with the brakes, not the sunroof. Overtime, the failure worsened, and the vehicle was taken back to the dealer where the contact was provided an estimate for the replacement of the sunroof. The manufacturer was notified of the failure. The vehicle had yet to be repaired. The failure mileage was 35,461.
At approximately 6:45pm on Tuesday, December 27, I was driving in Nassau County, NY, when my sunroof exploded. The sound was terrifying and I was very concerned that I was shot at or hit by an unknown object. At first I thought the object hit my car or my back windshield. I looked and did not see any holes anywhere but I could hear air coming into my car. I moved my sunroof shield and saw a gaping hole and shattered glass.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Airbags
Reports naming the air-bag system — deployment behaviour, inflators, sensors and warning lights.
From owner reports, verbatim
The contact owned a 2017 Lexus RX350. The contact stated while driving 45-50 MPH on the highway, another vehicle that lost control and crashed into the contact's front and side of the vehicle. The driver's front air bag did not deploy. The contact suffered minor injuries to the face from the glass front windshield, a cut and burn from the seatbelt, and a bruise to the arm. Medical attention was received. A police report was filed. The vehicle was towed to a tow yard. The vehicle was deemed and destroyed by the insurance company. The manufacturer was contacted and notified of the failure. The approximate failure mileage was 30,000 The contact stated that of all the airbags, none of them deployed at the time of the accident. As a result, the vehicle was totaled.
I was involved in a side collision accident and my car was determined to be total loss by the At-Fault's insurance company. I was lucky that my son and I came out with bruises and a few scratches but the main problem here is the airbags. It DID NOT deploy at all when it was hit. The force hit us from lane 1 all the way to lane 3 and damages to the structure near cabin was found by one of the vertified accident body shop. So yes, no airbags were deployed.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Powertrain (other)
Powertrain reports that are not specifically the engine or transmission — driveshafts, axles, transfer cases and differentials.
From owner reports, verbatim
On 5/8/2020, Northtown Lexus replaced or repaired the vacuum pump. Northtown Lexus required the vehicle to be returned for repair twice, following the initial repair on 5/8/2020. After three attempts, the vehicle's vacuum pump (per a factory recall) is not functioning properly. Northtown Lexus refuses to further diagnosis this defective vacuum pump and continued to decline any and all requests for repair. The vehicle operates abnormally ever since this factory recall was originally addressed by Northtown Lexus on 5/8/2020.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Tires & wheels
Reports naming tires, wheels, hubs, or the tire-pressure monitoring system.
From owner reports, verbatim
235/65r18 tire. I was driving on the highway and all of a sudden it was a loud noise and immediate tire noise. I struggled to slow the vehicle down and pull to the side of the road The tire is absolutely destroyed both on the inside and the outside side walls of the tire. I could have had a horrible accident because the car was completely out of control when the tire blew
Too few reports in this category for a page of its own — they appear in the full complaint list.
Body & structure
Reports naming the vehicle structure, frame, body panels, doors, hood and trim.
From owner reports, verbatim
Today, May 5th approximately 9am travelling on 287 East (Westchester County, NY) I was startled by what sounded like an explosion - I literally ducked in the driver's seat. Sounded like it came from overhead and then I observed that no other car seemed to have slowed or was affected. I put on my hazard lights and drove a 1/2 mile or so until I could safely pull over. As I'm driving I can hear over my head rumbling and the wind as if the sunroof was open - but I hadn't opened it. When I was able to get out and take a look the closed sunroof had shattered outward - it reminded me of a volcano pattern. Left my hazards on, got unto local roads and drove car to dealer - Ray Catena Lexus of White Plains, where we purchased the automobile. Service told me something must have hit me at the right angle. They could find no debris besides broken glass in the sunroof compartment. I was shaken and went through the process of figuring out a loaner and cost to repair. Upon my return home I spoke to my husband and we realized it just didn't make sense. We started doing research and discovered that the Toyota corporation may well be aware of these incidents, they've been happening to different models of Lexus cars/SUVs for years - different models all over the country. In California there is currently a class action suit against the corporation. I'm thankful I was driving and not my daughter and that I had the presence of mind not to lose control of the car or open the soft inside cover of the sunroof. This needs to be investigated, Toyota makes many different model cars, trucks, SUVs and this is unacceptable. My one regret is that I didn't have the presence of mind to take a photo.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Elsewhere on this vehicle
Data sources
- NHTSA Office of Defects Investigation — owner-reported complaints and the components recorded on them
Data on this page last refreshed .