2023 Lexus RX transmission problems

Filed Sep 29, 2026 · Transmission · TX

The transmission is jerking at times and it failed to accelerate at one point after coming to a complete stop. Notified Lexus and still working to fully resolve the issue but they just denied my request to reevaluate the issue.

Filed Aug 21, 2026 · Transmission · VA

The vehicle exhibits a severe, load-based mechanical transmission whine strictly during active acceleration. The pitch of the whining sound rises and falls in direct proportion to the engine's RPMs. This vehicle utilizes the Toyota/Lexus 8-speed automatic transmission architecture, which has a well-documented manufacturing flaw involving internal bearing wear, gear misalignment, and fluid starvation.This mechanical defect poses an immediate and severe safety hazard. The continuous internal wear and gear friction create an unpredictable risk of sudden transmission lock-up, unexpected dropping out of gear, or complete engine stalling while operating at high highway speeds. A sudden loss of motive power on a fast-moving highway leaves the driver completely unable to accelerate out of harm's way, creating an imminent risk of a severe rear-end collision or a catastrophic traffic accident. The manufacturer has failed to issue a safety recall for this known powertrain failure."

Filed Aug 19, 2026 · Transmission · 10,637 miles · CO

The contact owns a 2023 Lexus RX 500h. The contact stated that while driving at an undisclosed speed, the vehicle was shaking erratically, and the vehicle stopped independently. The contact stated that several unknown warning lights were illuminated and the message to “See the Dealer” was displayed. The vehicle was towed to the dealer; however, the failure was not duplicated. The failure reoccurred. The failure was a persistent failure. The dealer was made aware of the failure. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The failure reoccurred. In addition, the contact stated that the self-parking feature was deactivated. The vehicle was taken back to the dealer. The technician test drove the vehicle, and the failure reoccurred twice. The contact was informed that a report was sent to the manufacturer. The vehicle was not repaired. The manufacturer was made aware of the failure, and several cases were filed. The engineer was scheduled to inspect the vehicle. The inspection was completed; however, the vehicle information was incorrect on the documents. The contact was informed that another inspection would be scheduled. The failure mileage was approximately 10,637.

Filed Aug 18, 2026 · Transmission · AZ

While driving on [XXX] in [XXX] with my young child in the vehicle, my 2023 Lexus RX 350 F Sport suddenly lost acceleration. The vehicle initially would not accelerate beyond 50 mph and then progressively lost power, eventually being unable to accelerate beyond 40 mph. This occurred during rush-hour traffic, with vehicles traveling faster than me and passing closely. I attempted to move farther onto the shoulder because I felt unsafe being so close to traffic, but the vehicle became completely unable to drive. I had to stop and attempt to determine what was wrong with the vehicle. There were no warning lights, dashboard warnings, or notifications through the Lexus app before or during the incident. I had driven approximately 200 miles that day and had not noticed any unusual noises, odors, and nothing sounded abnormal prior to the failure. The vehicle had been regularly serviced every 5,000–10,000 miles. Its most recent service was in late March 2026, four months before this incident, and I was not informed of any transmission problems at that time. The vehicle had 80,000 miles at the time of the failure, and the scheduled transmission service/check was not due until 90,000 miles. The vehicle was taken to Lexus for diagnosis. Lexus determined that the transmission needed to be replaced and is holding my vehicle as transmissions are on back order. Lexus has agreed to cover the replacement transmission and is charging me $1800 for labor costs. I am reporting this incident because the sudden loss of acceleration and eventual complete loss of the ability to drive occurred while traveling on a freeway with a child in the vehicle and surrounding traffic, creating a significant safety concern. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Aug 3, 2026 · Transmission · KS

had transmission replaced 2 times and update to transmission. this is a brand new car purchased in 2023. first transmission replaced at 20,963 miles, 2nd replaced at 33,543 miles, 35,221 miles transmission update. It was cumulative 33 out of service. We feel this vehicle is unsafe to drive. Even after all the transmissions replaced om the is vehicle had 2 more incidents. One was loss of power in traffic and another was on a highway transmission would not shift into higher gear. This is not new there have been hundreds of people with the same exact problems. Lexus has internal TSB L-SB-0059-23 detailing these problems.

Filed Aug 1, 2026 · Transmission · KS

On July 21st, 2026 while stopped at a red light and upon turning green stepped on the accelerator to transition from stop to start, the vehicle suffered a sudden, catastrophic loss of motive power. The engine failed to respond to accelerator input, leaving the vehicle stranded in active traffic. This created an immediate rear-end collision hazard in a busy intersection. I was forced to coast the vehicle out of traffic to the side of the road, cycle the ignition off, and reset and temporarily regain powertrain functionality. Also on July 25th, 2026 I lost the power to accelerate on the highway when I was cutoff. I put the car in neutral and then back in drive to get power back to accelerate. These are the most recent, But I have had 2 transmission replacements. At separate times and then a re flashing to upgrade computer information another time. All within a 7 month period. This is a known issue by Toyota Motor Corp and has been circulated by the company under TSB-L-SB-0059-23.

Filed May 29, 2026 · Engine, Transmission · NJ

My 2023 Lexus RX350 with 67,000 miles displayed a check engine light along with a Drive-Start Control Malfunction warning. The vehicle was brought to a Lexus dealership where it was diagnosed with fault code P25B372 — Turbocharger Wastegate A Actuator Stuck Open. The dealership confirmed the wastegate actuator has failed and requires replacement. The part is currently on backorder with over 800 units backordered nationally, indicating this is a systemic issue affecting multiple vehicles. Toyota has issued Technical Service Bulletin T-SB-0084-23 covering this exact fault code on the same 2.4L turbocharged engine used in the 2023 Lexus RX350. The bulletin states the repair is covered under the Federal Emission Warranty for 96 months or 80,000 miles. However, the Lexus dealership has declined warranty coverage citing the absence of a Lexus-specific bulletin, despite the identical engine and fault code. The failure puts safety at risk as the Drive-Start Control Malfunction warning indicates loss of traction and stability control systems. The problem has been confirmed by the Lexus dealership. Warning lamps appeared on the dashboard prior to the visit. The vehicle is available for inspection upon request.

Filed Apr 23, 2026 · Transmission · CA

I am experiencing ongoing issues with my 2023 Lexus RX500h related to the powertrain/transmission. The vehicle has exhibited abnormal shifting behavior, including hesitation, jerking, and inconsistent acceleration. At times, the vehicle does not respond smoothly when accelerating, which raises safety concerns, especially when merging into traffic or driving at highway speeds. The issue occurs intermittently and has persisted despite multiple attempts to diagnose or address the problem. The condition affects the drivability and reliability of the vehicle and has not been resolved.

Filed Mar 9, 2026 · Transmission · CA

[XXX] ’s my wife we’re driving in Sacramento.The vehicle was stopped at a traffic signal waiting for the light to change. Suddenly, without warning the vehicle started violently shuddering/shaking, scaring us completely. The shaking stopped when my wife put into park. But for those few seconds it was extremely scary. This incident should be investigated by the federal safety agency as a repeat of the incident in moving traffic may cause severe property damage, serious injury and possible loss of life. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jul 10, 2025 · Transmission · 7,500 miles · NC

The contact called on behalf of his mother who owns a 2023 Lexus RX500H. The contact stated while his mother was reversing, the vehicle shuddered abnormally. The contact stated that while his mother was depressing the accelerator pedal, the vehicle failed to accelerate as intended. The driver turned off the vehicle and the vehicle restarted after several attempts. The vehicle was driven to the shoulder of the roadway. The contact stated that the failure had occurred twice. The contact stated that the transmission was previously replaced in January 2025. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The manufacturer was made aware of the failure. The failure mileage was approximately 7,500.