2019 Lexus Rx

Brake actuator makes a shriek when I engage the pedal. Problem is ongoing and applies to 2015-2019 Lexus RX450 Hybrid models. Problem is getting worse, and I am afraid of brake failure. Lexus has been repairing this problem, gratis, for owners under their Customer Support Program 23LE04. I contacted Lexus and was told that Hawaii-based Lexus Vehicles are part of the Japan Dealer Network and to contact them. I made an appointment and the car was inspected on April 16, 2026. The outcome was that Lexus of Hawaii/Japan will not repair my vehicle unless I pay $4,000 for a new brake booster pump assembly /labor. Lexus of N. America is covering this repair for 10 years or 150,000 miles, but they refuse to honor it here in Hawaii.

My Lexus 2019 RX450H is making a squishing squeaking brake actuator noise when pressing the brake pedal. I located well publicized TSB’s documenting the awareness by Toyota/Lexus of the problem. (TSB: MC-10245447-9999) Brake Squawk/Knock Noise. I checked with my local Lexus dealership to see if my vehicle had been repaired. It had Not!. Temecula Valley Lexus, 42081 Dealer Drive, Temecula, Ca. 92591. (951)365-6834. I scheduled an appointment for repair on 1/26/26. They rejected making the repair because my vehicle DID NOT have any codes in the computer OR any lights on the dash. They did in fact, confirm the brake actuator noise. I reject that concept because WHO could know ahead of time if a part experiences a (1st time) total failure without throwing codes and turning on dashboard lights? As I read the symptoms of severe problems experienced in a higher level of failure by brake actuators, I would not want to have to experience a crash accident in which the actuator would operate correctly in a hard stop condition or have ABS failure and brake lockup occur. Personal harm and property damage should not have to be an indicator if I can have the manufacturer cover a repair. Please advise What I should do to increase the response in the direction of getting this known problem repaired. Sincerely, [XXX] [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Brakes making honking sound when applied even when stopped. My brake actuator is failing and has been confirmed by the LEXUS Dealership. Noise and stiff breaks has been going on for a while. There is no recall, but Lexus put out LSB to dealerships May 15, 2023 and revisions earlier. This information should be provided to owners IMMEDIATELY, if the actuator fails, this is a safety issue.

I’ve approximately the last 45 thousand miles, Lexus dealers have replaced the brake actuator and other components of the brake system on this vehicle at least 6 times due to noise issues. Lexus has stated that this is not a safety issue, I have an open ticket with Lexus, but yesterday I had to slam on the brakes and did not get nearly the response that should have come right away. There are no warning lights, as far as I can tell the traction control didn’t engage, and eventually the car suddenly started breaking much harder, but it was very delayed l, and disproportionate with any additional force applied. Lexus knows the brake system is an issue in this model to the point where they are covering the system for 10 years or 150,000 miles, but to say that it isn’t a safety issue seems short-sighted. This system works in conjunction with the radar sensors adaptive cruise control, and I’ve had. This car has also had a number of seeming electrical issues, with every door lock actuator replaced at least once, some of them more than once, and the infotainment system shuts down and reboots randomly or freezes.

At the initiation of braking effort by pressing the pedal, there is a noise. This noise goes away completely beyond a point of compressing the brake pedal and even before complete braking. Lexus dealer said it was brake actuator. Repairing it is labor intense and costs $3800. However not a safety concern and can be driven. He did offer to do regular maintenance of topping off fluid, multi-point inspection, tire rotation package. I saw there were recalls and complaints about the same problem with other year's Lexus models. Can you investigate this and let us know if we can avail a recall fix for this? Thank you for your time. [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Lexus 2019 RX350 driving down hill with adaptive cruise control on tries to keep speed set at 72mph but as going down hill car gains speed so adaptive cruise control applies brakes to slow down. After 1-2 mile of downhill driving the car starts to vibrate severely until ADC is turned off allowing brakes to cool. Brakes seem normal as they slow car down without the vibration. Engaging ADC starts the whole process over again while going down hill. ADC does not cause vibration if on normal level or slightly downgrade sloping road.

The accident happened on 12/28/22. At 8:50 am, I was picking up a friend and was leaving the parking lot. My friend got in and and then opened the door to lock it again . My foot was on the gas pedal trying to leave the parking lot. The car jumped and went to the opposite side. I turned the steering wheel to keep it from hitting an object but could not get any control on the car. The car kept accelerating and I had to put the car back into park to stop the car. The acceleration was so much that the car jumped the curb and stopped by a wall. The air bags opened up.

The contact owns a 2019 Lexus RX350. The contact stated while his wife, was reversing in the driveway she hit the retaining wall. The driving alarms failed to engage and alert. The driver depressed the brake pedal however failed to respond and was depressed to the floorboard. The emergency brake failed to engage. The vehicle rolled down the hill and crashed into some unknown objects in the driveway. There were no reported injuries, air bag deployment, police report or fire. The vehicle was drivable. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was notified however, no further assistance was provided. The failure mileage was approximately 30,000.