2023 Toyota Highlander: brake failure

Filed Oct 20, 2026 · Brakes · IA

While depressing the brake pedal to come to a complete stop, the vehicle experienced a sudden loss of braking force, followed by a momentary forward surge/lunge before the friction brakes engaged.

Filed Oct 10, 2026 · Brakes · MN

Brake lag with loss of brakes during transition from regenerative to hydraulic friction braking. The vehicle braking system cuts out causing the vehicle to freely move forward which has caused near rear-end collisions with other vehicles, and loss of brakes at stop signs and crosswalks. The vehicle has been inspected four times at local dealership between June 1 and October 6, 2026. Brakes have been bled and recalibrated, actuator assembly has been replaced, and defect persists. Dealership has not been able to replicate the problem during their limited time with the vehicle. There are no warning lamps or messages and no other symptoms prior to each failure. Began noticing issue in May 2026. The issue appears to be similar to what is described in T-SB-0059-23 for the 2022 Toyota Highlander Hybrids (and Siennas) which is titled "Hybrid Regenerative Brake Transition Feeling Improvement" where there is a brake lag and momentary loss of braking sensation, and forward lurch/surge. Toyota has not issued a repair solution for the 2023 Highlander Hybrid, so there is no software calibration solution.

Filed Aug 5, 2026 · Brakes · VA

2023 Toyota Highlander Hybrid Regenerative Brake Transition loss of brake pad pressure resulting in acceleration of the vehicle under downhill conditions. Have momentarily experienced the loss of braking frequently during braking when going downhill. This results in the vehicle gaining speed during this 1 or 2 second period before braking returns. In one case it allowed our car to get dangerously close to the vehicle ahead of us but fortunately I was able to push the brakes harder to prevent an accident but did require aggressive braking. Luckily no one was behind us which may have resulted in the person following us braking hard or possible hitting us. This was a known issue for previous year Toyota Highlander models and Toyota issued service bulletin T-SB-0059-23 which is stated to only be for model years 2020 - 2022. So, Toyota dealers say they do not have a fix that applies to the 2023 model. It has been indicated that the dealer is unaware if any action is being taken by Toyota to address this issue in the 2023 and later models. We have multiple people driving this vehicle and this sudden loss of braking power is very concerning. The loss of braking force occurs upon the transition from regenerative braking to standard hydraulic breaking. Below are words from the Toyota Technical Service notice concerning the problem. "Highlander Hybrid vehicles may be sensitive to the momentary transition from regenerative braking to hydraulic braking under certain driving conditions, such as while driving downhill, or turning with light brake pedal application. The brake actuator control module can be updated to improve brake feeling for this condition. Follow the Repair Procedure in this bulletin to address this condition."

Filed Jul 26, 2024 · Brakes · WI

Brakes momentarily lost during certain conditions. If going down a hill and applying brake, suddenly loses pressure and vehicle surges forward. Taking a right hand turn, slowing, brake suddenly loses pressure and lunges forward causing vehicle to go into wrong lane. Parking, apply brake, surges forward, end up in the next spot forward. I've had several very close calls, including trying to stop behind a bicycle at a stop sign, came within inches. I've repeatedly been to dealer. Toyota calls it "loss of braking sensation", have issued a TSB for years prior to 23. I have a 23 hybrid, there is no TSB or fix. Dealer is aware of the issue, has techs who have experienced it themselves. Just can't be fixed without Toyota stepping up. Happy to work with Toyota if they want to put sensors or computers on the vehicle. When the vehicle was new it only occurred once/twice a month. Now it is every day. The latest incident was today driving back from the dealer.

Filed Sep 24, 2023 · Brakes, Electrical · FL

Picked up my Toyota Highlander in April 2023 I have had to return it to the dealer on two occasions for check engine light and secondary Break failure I'm at the fourth check engine light and secondary brake failure report now it has been inspected by the dealer and tried to remedy it too times already currently getting ready to return to the dealer with the third check engine light secondary brake failure message