There are 4 owner-reported brakes complaints for the 2022 Lexus RXin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
The contact owns a 2022 Lexus RX450H. The contact stated while driving 35 MPH on a rainy day, the brake pedal was depressed; however, there was an abnormal squishing sound coming from the brake pedal, and the vehicle failed to stop as intended. The contact stated the vehicle went through the stop light and up onto a curb before the vehicle stopped. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. Additionally, the contact stated that the failure had occurred previously. The vehicle was taken to the dealer; however, the dealer confirmed the abnormal squishing sound when the brake pedal was depressed. The vehicle was not repaired. The contact was informed that the manufacturer had declined to repair the vehicle. The manufacturer was made aware of the failure and a case was filed. The contact was informed that both actuators had been replaced previously. The contact referenced Technical Service Bulletin: L-SB-0005-21; however, the contact was informed that the repair was not covered under warranty or any special programs. The failure mileage was approximately 31,600.
I am writing to formally express my serious concerns regarding the brake actuator on my Lexus vehicle, which remains unrepaired despite being under warranty. This issue poses a significant danger to both myself and the public, and I am seeking an urgent resolution. I have been a proud owner of my Lexus RX450H 2022, and the vehicle is currently under warranty. Recently, I visited the Lexus dealership in Roseville, California, where it was recommended that the brake actuator be repaired due to its faulty condition. Despite this recommendation and the warranty coverage, the repair has not been carried out. The malfunctioning brake actuator is a critical component of the vehicle's braking system. Its failure can lead to inadequate braking performance, significantly increasing the risk of an accident. This issue not only jeopardizes my safety but also endangers other road users. It is imperative that such a critical safety concern is addressed promptly to prevent potential harm. Vehicle does not stop properly due to defective part. Lexus has replaced two actuators and refuses to replace another one as it cost 3200. This is a serious safety issue that can cause physical harm or even worse death.
The accident happened when I was using the "BRAKE HOLD SYSTEM". It is designed to use when the needs to stop briefly. When the Brake Hold button is touched while the driver's foot is on the brake pedal, the driver do not need to step on the brake even though the shift lever is in D. After I finished paying for a car wash, I touched the Brake Hold button. Then the vehicle suddenly accelerated forward and ran at a high speed. I was pushing the brake pedal, when I touched the button. I was startled and attempted to stop the vehicle with all my strength by braking the brake pedal. It didn't stop and went over the cub and accelerated even more and it crossed the both lanes and hit the cub on the other side. It climbed up the bank wall and it finally stopped. The police and the ambulance came and took me a hospital. I later found out the vehicle was towed to a nearby junk yard. I believe that the new high-tech system known as BRAKE HOLD malfunctioned and caused "unintended acceleration". I believe that it certainly is extremely dangerous. It has not yet been inspected by the Lexus mechanics. There were no warning signs whatsoever before the unintended acceleration. BTW, I have used the function before i.e. when I used drive throughs.
The contact owns a 2022 Lexus RX350. The contact stated that while depressing the brake pedal, the vehicle started shaking; excessive force was needed to depress the brake pedal. There were no warning lights illuminated. The vehicle was taken to the dealer where it was diagnosed and determined that the brake pads and rotors had failed and needed to be replaced. The rotors were resurfaced; however, the failure persisted. The vehicle was not repaired a second time because the dealer was unable to determine the cause of the failure. The manufacturer was made aware of the failure and filed a cause regarding the failure. The failure mileage was 12,000.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 25, 2026