2021 Toyota Sienna Hybrid Brakes Problems

“brake sleeps sometime when i press brake pedal i took car to dealer once,they said need time i did not have much time took another time, they reseted system still... my warranty is over now. rear seat,make shake noise and check rear seat sign on dealer can't find problem. did not do anything since new car. i do not know any other 2021 sienna drivers have same problem.”

“I purchased my 2021 Toyota Sienna Hybrid new in March 2021. For several years I have had an intermittent braking problem: when I apply the brakes, especially while slowing down or driving downhill, the vehicle sometimes lurches or feels like it suddenly accelerates forward instead of slowing. I must press the brake pedal again to stop. This happens without warning and is frightening, especially with my children in the car. I first reported this to a Toyota dealer on 10/10/2023 at about 41,192 miles, and again on 7/11/2024 at about 55,637 miles. …”

“My 2021 Toyota Sienna Hybrid has an intermittent and dangerous brake failure where the brakes suddenly release pressure during normal braking. When slowing down—especially at lower speeds or approaching a stop—the brake pedal briefly loses resistance and the vehicle surges forward as if the brakes let go. I must immediately re‑apply hard pedal pressure to avoid rolling into traffic or another vehicle. The vehicle as a result can stop up to six feet past the intended stopping point in some instances. This issue is unpredictable and has occurred multiple times. It creates a serious safety risk. …”

“Car surged as brakes were applied when stopping. Very dangerous. Could have easily rear-ended another vehicle. Surge was immediate and occurred when brake was being applied. Not confirmed yet, but another driver of vehicle told me of having similar problems when braking this car. Very scary. No warnings or messsages.”

“The car jerks when coming to a stop. Like when the regenerative system is disengaged it jerks. For the Adaptive cruise control the car will accelerate instead of braking when another car merges in front of you.”