On Juky 7, 2026 @ 10:30pm a catastrophic safety failure occurred involving a 2026 Lexus TX 350. The vehicle experienced a complete electrical and software failure while an occupant (my mother) was inside. All electronic door release buttons failed simultaneously, completely locking the occupant inside the vehicle. The emergency manual double-pull override mechanism on the interior door handles failed to mechanically release or open any of the doors. Concurrently, the climate control system locked on high heat, causing the cabin temperature to rise rapidly. Due to the total entrapment and extreme heat, the occupant began losing consciousness, and her blood pressure spiked to a dangerous level of 188/100. Family members outside the vehicle were unable to open the doors or bypass the electronic locks from the exterior. Emergency services were called to the scene. The local Fire Department had to perform an emergency extraction to rescue the occupant from the vehicle. The occupant required immediate medical attention for severe heat stress and a hypertensive crisis.

The contact owns a 2026 Lexus TX 350. The contact stated that after an extended driving period, the vehicle was parked in the garage, and the contact became aware of a strong gasoline odor. The fumes caused persistent headaches that lasted two days. The contact had not sought medical attention. Upon inspection, the owner was unable to locate a visible fuel leak. The vehicle was moved to the driveway and was later towed to the dealer. After an extensive diagnostic test was performed by the dealer, the cause of the failure was not yet determined. The vehicle remained with the dealer and was not repaired. The manufacturer was notified of the failure, and the contact was provided a case number. The failure mileage was 3,563.

The Lexus TX 500h is equipped with a 6-speed sequential-shift automatic transmission, which is paired with the Lexus DIRECT4 all-wheel drive system. This setup utilizes a 2.4-liter turbocharged hybrid powertrain to deliver 366 horsepower and 406 lb-ft of torque. During many occasions, the transmission on the 2026 Lexus TX500h would shudder during acceleration or deacceleration. I noticed it happening around 25-40mph mostly and it has happened more than once. I have demonstrated the issue to the dealer on Wed, May 20th around 10:15am Pacific but they didn't know how to address the issue. I did a ride along with the service tech from Lexus of Pleasanton and it happened again during acceleration. The dealer noted that there were no error code when they scanned the system and no observed leaks. I have a video clip but was unable to upload it. The issue with transmission shift thump when this issue happen feels like the transmission locked up. It would shake the vehicle and lose power while accelerating before it starts to gain power back in 1-2 seconds. This causes a safety issue since that pause in acceleration thus this can be dangerous while merging onto a freeway or areas with lots of traffic. I noticed the same issue on some occasions, it would shake during deceleration as well. This issue is intermittent. Maybe Lexus/Toyota can address this with the transmission shifting update. IMO, It's a safety issue that needs to be looked and fixed by Lexus/Toyota. Dealer asked me to come back only. They reset my information screen to address a sliding driving issue where when the power is turned off on the vehicle the seats will go back and immediately go forward.

The vehicle is a brand new Lexus TX. The primary issue involves a brake system malfunction. While driving, a “BRAKE” warning message appeared on the dashboard. At the same time, the brakes were actively applied, and this occurred multiple times in succession during the same driving event. At the time of the incident, we were not aware that the vehicle should not be driven when this warning appears and drove the vehicle home. After reviewing the owner’s manual, we learned that the vehicle should not be driven under these conditions. The vehicle was then towed to the dealership for inspection. This event posed a significant safety risk. Repeated, unintended brake application while driving could result in sudden deceleration, loss of vehicle control, or increased risk of being struck by other vehicles, increasing the risk of a crash, injury, or death. Prior to this incident, the vehicle also experienced a complete failure of the camera/display system, where the screen went black, impacting driver visibility systems. The vehicle is currently at the dealership and under inspection by the manufacturer’s authorized service center. The issue has not yet been confirmed or reproduced at the time of this report. There were no prior warning messages before the brake warning appeared. The failure occurred unexpectedly. The component(s) responsible for the failure are currently unknown, pending diagnostic evaluation by the dealership. The vehicle is available for inspection upon request.

03/15/26 Tried to start the car but it did not start. The display said Low Brake Power. This happened to brand new car. Called the Lexus 24/7 assistance, they jump start the car. Similar incident happened once again on 03/22/26. Called assistance they jump start the car again. The concern here is that it is happening to brand new car ran for only 2000-2400 miles. As the battery dies it becomes less safe to come out of car also.