2024 Toyota Sienna Hybrid: jerking or lurching

Filed Oct 30, 2026 · Brakes, Driver assistance · IN

I have been having issues with my 2024 Sienna XSE since about 6 months after getting it. The break surge, jump, lurch, slip, etc. so many different names people call it, is the issue and it needs a permanent fix! I had the ‘software update’ done from the bulletin that is out for this issue about a year ago and it finally went away…but only for about 3 months. Ever since then, it has gotten so much worse with time now. I wish I never got the update. It is happening much more frequently, like twice a week! It doesn’t matter about road type, turns, hills, etc. anymore as long as I’m breaking it happens. The slip is getting longer and not catching as quickly and I nearly hit a car that was stopped at a light yesterday because of the re-acceleration, and I was breaking with plenty of time.

Filed Oct 30, 2026 · Brakes, Driver assistance · CA · crash

While driving at very low speed on a residential street, my wife was braking when our Sienna struck an unoccupied parked Toyota Tacoma with the right front corner. She believes she was braking and the van did not slow as expected. The pre-collision system did not brake or warn. We have repeatedly noticed the van surge or lurch forward while braking at low speed, such as when pulling out of our driveway. We are aware of Toyota service bulletin T-SB-0047-24 on brake surge in 2021-2024 Sienna hybrids. Damage includes the right front structure, hood, fender and headlamp, with repairs estimated at about $19,900. The vehicle is currently at a body shop (Haws Auto Body, Lafayette, CA).

Filed Aug 26, 2026 · Brakes, Driver assistance · GA · crash

Three (3) separate systems failed. 1. Upon seeing cars ahead of us slowing down, my husband pressed the breaks to slow down to avoid collision. When he pressed on the breaks, instead of slowing down or stopping the vehicle, the brakes failed to engage, and caused a surge that compelled the vehicle to lurch forward. The lurch propelled our vehicle into collision with another vehicle. 2. Also, the forward collision warning system failed to alert or engage the breaks. Our vehicle was stopped by the impact of hitting the other vehicle, not by its own breaks. 3. The automatic breaking system also failed to engage at all prior to impact.

Filed Apr 2, 2026 · Acceleration, Brakes · VA

I am reporting a possible safety defect in my 2024 Toyota Sienna Hybrid AWD, VIN [XXX] . The vehicle intermittently surges, lurches, or creeps forward while I am pressing the brake pedal and attempting to slow or stop. It feels as though the vehicle briefly adds power or braking force momentarily decreases even though my foot remains on the brake. The sensation is not normal creep alone; it feels like a brief unintended forward push while braking. The problem is intermittent, which makes it difficult to predict, but it creates a safety concern because it can happen when slowing, stopping, or maneuvering at low speed. I am concerned this could increase stopping distance or cause the vehicle to move forward unexpectedly. I am requesting investigation of possible defects involving the braking system, hybrid regenerative braking transition, brake actuator, pedal sensing, or related control software. It happens daily. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Sep 8, 2025 · Brakes · PA

On rare occasions (about once every 500 miles), when uniformly applying force to the brake pedal, the deceleration suddenly ceases and the vehicle seems to jerk forward. To a passenger, it feels like the driver's foot slipped off the brake pedal, but the driver continued to provide the same uniform force to the brake pedal and lost all deceleration. Typically, the driver is startled and presses significantly harder on the brake pedal jerking all occupants forward. The brakes re-engage and continue the deceleration at a much higher rate. Toyota addressed this problem with TSB 4724 which involved reprogramming the brake actuator assembly. This corrected the problem for about 3 months, but it is now occurring again. When the car was taken to the Toyota dealer again, the technician stated that TSB 4724 was cancelled, he could not duplicate the action (even though he was told it only happened on rare occasions), and claimed that the "brakes function properly as they should." Fortunately these loss of braking incidents have only occurred on dry pavement so that the driver did not lose control of the car when slamming on the brakes to compensate for the loss of deceleration. Coming down a hill on a snow covered road could have caused the vehicle to slide into an oncoming lane. It is my speculation that there is a null spot that exists during certain circumstances which causes there to be a "gap" between when this hybrid vehicle transitions between the dynamic hybrid brake and the friction wheel brake. Both braking systems independently work fine, but the transition between them (on rare occasions) does not occur continuously. This causes the driver to experience an unexpected loss of braking which, under the right conditions, could cause the driver to loose control of the forward motion of the car. As an engineer, I feel it is unacceptable for a safety system (braking) to not properly operate 100% of the time! On a Toyota owner's site, others have seen the same.

Filed Jun 22, 2025 · Brakes · MD

When going down hill while braking, the brakes will release causing the car to lurch forward and then they grab again. It’s intermittent and Toyota has a TSB on it but the dealership with not fix it because they can’t duplicate the problem. It can cause people to take their foot off and of the brake pedal and trying to apply it again. Which can cause someone to rear end another car.