During the past three years, I have experienced approximately 4–5 incidents in which the vehicle unexpectedly surged forward while I was lightly pressing the brake pedal to slow down, particularly when driving downhill or approaching a stop sign. During these incidents: •The vehicle unexpectedly increased speed instead of slowing down. •A red BRAKE warning light appeared on the dashboard. •I had to apply substantially greater pressure to the brake pedal to stop the vehicle. Fortunately, no accident has occurred, but this is a serious and recurring safety concern. I requested that Toyota investigate whether my 2023 vehicle has a related brake-control system defect. They ended up with the conclusion of not being able to duplicate the incident. Because this problem has occurred repeatedly and involves unexpected vehicle movement while braking, I consider it a serious safety defect.
Toyota Highlander sudden acceleration problems
167 of the 5,816 owner complaints about the Toyota Highlander describe sudden unintended acceleration, most of them for the 2008 model year.
- owner complaints
- 167
- worst model year
- 2008
- typical repair cost reported
- $6,900
- typical mileage
- 29,000
By model year
Often reported together
Jerking 17No deployment 12Hesitation 7Brake failure 5Grinding brakes 4Transmission failure 3Stalling 3Adaptive cruise 2
What owners say
Within 1 mile of the Dealership, the new to us, 2018 Highlander was: -Lunging, not accelerating/Delayed shifting -Unpredictable surging -unintended acceleration -Excessive revving before upshifting I brought it back to the dealership & was given a loaner vehicle Once the transmission line was supposedly fixed, I drove it home. Then discovered it had leaked onto my driveway. They took it back & fixed something in the transmission again. After a few months, we thought it was good to go. In October 2026 it was doing all of the above lunging, lack of response from Transmission Again. I drove it to the dealership. Then told I needed a replacement Transmission. They said line rusted and was leaking. I have been asking if they have pictures from prior services. I have continually gotten under body washes & don’t believe that it started rusting while I was the owner. This transmission is obviously defective like the ones in class action lawsuits. I have called the dealer & now Toyota Customer Care to discuss them doing the right thing. Which I believe would be them taking responsibility and paying for the new transmission. It has been a month of waiting for a transmission to be located.
The contact owns a 2019 Toyota Highlander. The contact stated that driving the vehicle lost power and failed to properly accelerate while depressing the accelerator pedal. There was an abnormal whining sound coming from the transmission and the vehicle lunged forward and unintendedly accelerated. The vehicle was taken to the local dealer and was diagnosed with transmission failure. The contact was informed that the transmission needed to be replaced. The vehicle was not yet repaired. The contact was informed that the transmission was on back order from the manufacturer. The manufacturer was notified of the failure. The failure mileage was 74,000.
On September 23, 2026, at approximately 7:30 AM, I was driving the vehicle in a parking garage at an estimated speed of approximately 10 mph. While driving over a curve in the parking garage and applying the brakes to slow the vehicle and maneuver into a parking space, the vehicle suddenly accelerated on its own despite the brakes being applied. The vehicle struck the metal wire safety fence and then came to a stop. Prior to this incident, over the preceding 2–3 months, I had experienced intermittent problems with the transmission. Specifically, when shifting from neutral to reverse, the transmission would occasionally become temporarily stuck or fail to engage properly. It would then begin functioning after a small tap. What component or system failed or malfunctioned, and is it available for inspection upon request? : Possibly transmission How was your safety or the safety of others put at risk? There was no one else in the parking garage as it was early in the morning, otherwise it could have resulted in loss of additional property and possibly injuries. Has the problem been reproduced or confirmed by a dealer or independent service center? Going to consult with the dealer soon Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? insurance has been informed. Awaiting their response. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? As mentioned about 2-3 months prior there were minor transmission issues.
I was parking my car and was almost to the gray slab to stop when the car suddenly surged forward! It felt like an airplane taking off. I hit a brick building. Somehow my nose was broken, and I was bleeding profusely. If someone had been walking on the sidewalk in front of me, they would have been crushed against the brick wall. Others have had this problem; in fact, one lady said she almost hit a brick wall! Ironic! There was no warning of any kind. However, the day before, while driving on the highway, the car did the same thing: it surged forward, but fortunately I was able to control it, and there had been no one in front of me. If I had been driving locally, I surely would have hit someone, and who knows what the consequence would have been. The Insurance Company towed the car and totaled it.
I was parking the car. Car in park. Foot on brake. Carr violently lunged forward. Hitting, and tilting, concrete pole. Put car in reverse. Lunged forward then backward. Someone could have been killed. Thank God no person was near. I could have lunged through a storefront if Parked by shop.
I own a 2021 Toyota Highlander Hybrid. The vehicle exhibits a dangerous braking surge defect. When braking during cornering or in stop-and-go traffic, the vehicle randomly surges forward even though the brake pedal is depressed. This creates a serious safety hazard and increases the risk of collision. On multiple occasions, this defect has nearly caused an accident. The last time it happened we were driving in stop and go traffic and the vehicle surged forward while depressing the brakes and the engine died leaving a red triangle on the dash. Toyota has acknowledged this condition through Technical Service Bulletin T-SB-0059-23, which applies to my vehicle. The bulletin involves reprogramming the brake actuator assembly control module to address the braking transition between regenerative and hydraulic braking. Despite this, Toyota has refused to apply hybrid system warranty coverage, misclassifying the defect as a conventional brake issue. My vehicle is available for an inspection. I contacted Toyota corporate, who initially responded but failed to provide follow-up or resolution. The defect persists after the bulletin was applied. Toyota’s refusal to cover the repair under the hybrid warranty leaves me with an unresolved safety defect. This complaint is intended to document the ongoing safety risk and Toyota’s failure to provide adequate remedy under warranty. I request the federal safety agency investigate this issue as a systemic safety defect affecting 2020–2022 Highlander Hybrid models.
When I am slowing down and coming to a stop, my car will surge forward. It feels like my brakes stop working for a second and that I pressed the accelerator. It has happened on flat road, hills and turns.
I reported twice to Tustin Toyota that my car seemed to have a strange braking issue. It felt like the car lurched/lunged forward as I was braking. Every time I brought it into service, I verbally mentioned it to the technician checking my vehicle in. I was repeatedly told there was no issue. Turns out there is an active bulletin (T-SB-0059-23) that came out but now my vehicle is out of warranty and they won't fix it unless I pay out of pocket. Why was the dealership not aware. Why is this not a recall for all affected years regardless of warranty? There have been multiple reports online with people have the same issue.
>While exiting a highway my vehicle surged forward crashing into the vehicle in front of me.Engaging the brake, my car smashed into the van again. I had no control over the forward momentum of the car. >Both the driver & I were in danger of injury >The problem has not been addressed as my damaged car is being repaired >The vehicle has not been inspected >I was given no warning that the incident was forthcoming
Related recalls
Vehicle speed control: accelerator pedal
- What is wrong
- Toyota is recalling certain model year 2004-2006 highlander, highlander hybrid, and model year 2004-2007 lexus rx330, rx350, and rx400h vehicles. If the forward retention clip used to secure the floor carpet cover, which is located in front of the center console, is not installed properly the cover may lean toward the accelerator pedal and interfere with the accelerator pedal arm.
- Risk
- If this occurs, the accelerator pedal may temporarily become stuck in a partially depressed position rather than return to the idle position. A stuck accelerator pedal may result in unintended and sustained vehicle speeds and make it difficult to stop, increasing the risk of a vehicle crash.
- Remedy
- Dealers will replace the floor carpet cover with a newly designed one free or charge. The safety recall is expected to begin during march 2011. Owners may contact toyota at 1‑800‑331‑4331.
Recall number 11V112000 · Recall details
Vehicle speed control: accelerator pedal
- What is wrong
- Toyota is recalling certain model year 2008-2010 highlander, model year 2009-2010 corolla, venza and matrix passenger vehicles. The accelerator pedal can get stuck in the wide open position due to its being trapped by an unsecured or incompatible driver's floor mat. This recall is an expansion of a campaign of 3.8 million other toyota vehicles announced in 2009 for the same issue (see 09v‑388).
- Risk
- A stuck open accelerator pedal may result in very high vehicle speeds and make it difficult to stop the vehicle, which could cause a crash, serious injury or death.
- Remedy
- Toyota will modify or replace the accelerator pedals on the subject vehicles. Floor surface modifications are also being considered and will be included for any model for which it is deemed appropriate. Initially, dealers will be instructed on how to reshape the accelerator pedal for the repair. As replacement parts with the same shape as the modified pedal become available, they will be made available to the dealers for the repair. Customers who have had the pedal reshape remedy completed will have the opportunity to receive a new pedal if they desire, after replacement pedals become available. In addition, toyota will replace any toyota all-weather floor mat in a subject vehicle with a newly designed mat, free of charge. For those customers who have the previous design all-weather floor mat but do not need or want the newly designed all-weather floor mat, toyota will recover the previous design all-weather floor mat and reimburse its price. The safety recall began march 30, 2010. Owners may contact toyota at 1‑800‑331‑4331.
Recall number 10V023000 · Recall details
Vehicle speed control: accelerator pedal
- What is wrong
- Toyota is recalling certain model year 2005-2010 avalon, model year 2007-2010 camry, model year 2009-2010 corolla, corolla matrix, rav4, model year 2010 highlander, model year 2008-2010 sequoia, and model year 2007-2010 tundra vehicles. Due to the manner in which the friction lever interacts with the sliding surface of the accelerator pedal inside the pedal sensor assembly, the sliding surface of the lever may become smooth during vehicle operation. In this condition, if condensation occurs on the surface, as may occur from heater operation (without A/C) when the pedal assembly is cold, the friction when the accelerator pedal is operated may increase, which may result in the accelerator pedal becoming harder to depress, slower to return, or, in the worst case, mechanically stuck in a partially depressed position.
- Risk
- The accelerator pedal may become hard to depress, slow to return to idle, or, in the worst case, mechanically stuck in a partially depressed position, increasing the risk of a crash.
- Remedy
- Dealers will install a reinforcement bar in the accelerator pedal which will allow the pedal to operate smoothly. Gm will notify owners for the pontiac vibe please see 10v‑018. This service will be performed free of charge. The safety recall is expected to begin on february 5, 2010 and will be completed on march 15, 2010. Owners may contact toyota at 1‑800‑331‑4331.
Recall number 10V017000 · Recall details
Vehicle speed control: accelerator pedal
- What is wrong
- On certain sport utility and hybrid vehicles, the two retaining clips for the driver's side forward center console can become loose. If both clips separate from the floor carpet cover, the cover may lean toward the accelerator pedal, causing interference with the accelerator pedal rod.
- Risk
- This condition may interfere with the accelerator pedal returning to the idle position increasing the risk of a crash.
- Remedy
- Dealers will replace the two floor carpet cover retaining clips free of charge. The recall began on july 24, 2006, and should be completed by early september 2006. Owners may contact toyota at 1‑800‑331‑4331 or lexus at 1‑800‑255‑3987.
Recall number 06V253000 · Recall details
Questions about the Toyota Highlander sudden acceleration
Which Toyota Highlander years have sudden unintended acceleration problems?
The model years with the most reports are 2008 (16 complaints), 2006 (15 complaints) and 2003 (12 complaints).
How much does it cost to fix sudden unintended acceleration on the Toyota Highlander?
Owners who mentioned a price put the repair at about $6,900 (median of 7 complaints that include a dollar amount). Costs vary with mileage, warranty and where the work is done.
VIN decoder
See the problems and recalls for an exact car
Buying a used Toyota Highlander?
Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.
Check its history