2010 Toyota Prius: hesitation when accelerating

Filed Feb 28, 2023 · Brakes, Driver assistance · 135,000 miles · FL

The contact owns a 2010 Toyota Prius. The contact stated that while driving at various speeds, the vehicle started to hesitate. The ABS and traction control warning lights were illuminated. The contact stated that there was brake message displayed. During the failure the brake pedal had to be depressed twice before the vehicle responded. The vehicle was taken to the local Service Center who diagnosed that power brake booster and master cylinder needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure and informed the contact that the vehicle did not qualify for the Extended Warranty related to the failure. The local dealer was not yet contacted. The failure mileage was 135,000.

Filed Sep 7, 2016 · Brakes, Driver assistance · 141,000 miles · FL

Tl* the contact owns a 2010 toyota prius. When the brake pedal was depressed at 35 MPH, the vehicle skipped, jerked, and hesitated to respond. Also, the ABS and traction warning indicators illuminated. The vehicle was taken to an independent mechanic where it was diagnosed that the brake booster pump assembly accumulator was leaking and needed to be replaced. The vehicle was not repaired. The manufacturer stated that the VIN was not included in the federal safety agency campaign number: 13v235000 (service brakes). The failure mileage was 141,000.

Filed May 12, 2016 · Brakes, Tires · 86,000 miles · CA · crash

Tl* the contact owns a 2010 toyota prius. While driving 5 MPH, the brake pedal was depressed, but the vehicle hesitated to respond. The contact stated that the ABS warning light, traction control warning light, and brake system warning light illuminated. The vehicle was taken to the dealer to be diagnosed. The contact was informed that the brake booster master cylinder needed to be replaced. The vehicle was not repaired. The vehicle was not included in the federal safety agency campaign number: 13v235000 (service brakes, hydraulic). The manufacturer was notified of the failure. The approximate failure mileage was 86,000. Updated 09/06/16*lj the consumer stated the master cylinder/brake booster assembly were subsequently replaced. Also, on january 5, 2016, the consumer was involved in an accident while driving on a winding highway. As he tried to negotiate a turn, the tires slipped off the pavement and he ran off the road, causing over $10,000 in damages. Updated 10/18/16.

Filed Apr 16, 2015 · Engine · 70,000 miles · FL

On march 4th 2015 at 8:00 am, my wife was trying to change a parking spot into another about 50 feet away in the same church parking lot. She started the engine and the car was put on drive. Within a fraction of a second, the car accelerated beyond control. She could not steer or stop the car. The car jumped a curb, hit a light pool and landed on a grassy area. Tire marks reveal that the car experienced a sudden rush of acceleration beyond control 'unintended acceleration.' my wife is still under doctor's observation. The car front right; bumper, tire, fender, door, "a" pillar, and other parts were damaged. The car was towed to daytona toyota and is still there since march 4th 2015. On march 6th 2015 a report was electronically filed with toyota motor sales, u.s.a., inc. On march 20th 2015, a "cdr" crash data retrieval was taken. The car has not been repaired. Even if the car is repairable, I would hesitate to drive it, let my wife drive it or with clear conscious sell it to any other human being. Please help us to mitigate the situation.

Filed Oct 26, 2014 · Brakes · PA

This is a chronic problem with the car: when it hits rough terrain, the brakes do not react properly. There is a hesitation between the time the brake pedal is hit and the time the car slows. (there was an earlier repair/recall for this issue, and the initial problem -- also brake-related -- was helped; but this hesitation problem -- only on gravel or rough terrain -- resulted.) it will cause an accident eventually.

Filed Nov 15, 2010 · Electrical · 1,700 miles · MD · crash

Tl* the contact owns a 2010 toyota prius. The contact stated that he engaged the panic stop button but the vehicle hesitated before stopping and caused the contact to crash into the rear of another vehicle. A police report was available. The vehicle was taken to an authorized dealer but the dealer was unable to duplicate the failure. The manufacturer was not notified. The VIN was unavailable. The failure mileage was approximately 1,700 and the current mileage was approximately 2,000. Updated 02/02/11

Filed Jun 21, 2010 · Brakes · 9,000 miles · CA

Tl* the contact owns a 2010 toyota prius. The contact stated when driving over a pot hole or any uneven road surface, the vehicle would exhibit a delay in braking. The brakes would hesitate to engage when depressed. The dealer advised the vehicle was under the federal safety agency recall campaign id number 10v039000 (service brakes, air; antilock: control unit/module) and received the recall repairs. The failure persisted after repairs. In addition, the brakes would sporadically become stuck when braking in reverse and the then would begin to jerk violently. The vehicle was not further repaired. The failure mileage was 9,000 and the current mileage was 11,786.

Filed Apr 27, 2010 · Brakes · 9,000 miles · OH

Tl* the contact owns a 2010 toyota prius. The contact stated that the vehicle was taken to the dealer for repairs under the federal safety agency recall campaign id number 10v039000 (service brakes, air: antilock: control unit/module). Since the vehicle was repaired the brake pedal would fall onto the floorboard when the brakes were applied. There was a hesitation in brake engagement and the contact had to use the emergency brakes in order to stop the vehicle. The manufacturer was contacted but would not provide any further assistance. The VIN was not available. The failure mileage was 9,000 and the current mileage was 12,000.

Filed Apr 4, 2010 · Brakes · 9,000 miles · IL

Despite having had the brake recall item fixed on my 2010 toyota prius, I continue to experience instances when I depress the brake and the car skids from side to side with a sensation that the end of the car is literally lifting off the ground. This has happened to me multiple times and toyota has told me that the recall fixed any concerns, so there shouldn't be anything wrong. On one occasion when this happened my vehicle actually bumped into a fixed object, causing damage to the front bumper. I purchased this car based on toyota's reputation and am now so mistrusting of it that I hesitate to put my family in it. As a consumer I strongly feel that I and all owners of 2010 prius' should have the right to opt to return our vehicles to toyota and have the opportunity to select a different new or used vehicle of the same price for what we paid for our cars. The proven concerns about the 2010 prius should be enough for the federal safety agency to put pressure on toyota to allow for some type of restitution. It is not as simple as just trading in the car at any random dealer because the reputation of these cars has severely lowered the market value. Toyota's errors should not be permitted to have a financial impact on those consumers who purchased their cars. I would be happy to allow the federal safety agency to test my vehicle for a short period of time if it would help in the research of this problem.

Filed Mar 10, 2010 · Brakes · 1,300 miles · MD

Tl*the contact owns a 2010 toyota prius. Whenever the contact attempts to brake while traveling over a rough surface the brakes will hesitate to engage increasing the stopping distance. Prior to the recent failure the contact had taken her vehicle to the dealership where the federal safety agency recall # 10v039000 was performed on her vehicle. The current and failure mileages were 1300. Updated 05/10/10 *bf updated 05/10/10

Filed Feb 22, 2010 · Brakes · 8,300 miles · MN · crash

I have had several problems with my 2010 toyota prius. I have found the brakes to be undependable in situations of uneven pavement or anything but perfect road conditions. After applying the brakes, the car continues to move forward as if the brakes were never applied. This continues for several seconds causing a dangerous delay in performance of the brakes. This has occurred several times this winter, and is unfortunately not predictable. One instance LED to my car slamming into an snow and ice bank damaging the lower front part of the car. Any other car I have driven would have stopped long before having contact with the bank, as the pavement was dry yet uneven. Another issue I have had is unreliable acceleration, again a hesitation of several seconds after the accelerator pedal is pushed that is dangerous as well making performance unpredictable. Both these situations leaves me uncertain of what kind of performance I can expect form both the brakes and accelerator at any given time. Since I drive my daughter to school each day, I am nervous every time I get into the car and concerned about the safety of my daughter and the other students. I also regularly wake up in the middle of the night fearful about driving my prius to school and work the following day. So far I have done nothing to correct the situation as toyota dealerships are so swamped by other recall appointments that it is nearly impossible to get an appointment for anything but a recall. So far toyota has not contacted me about the brake recall solutions or recall process, so I am at a loss about where to turn.

Filed Feb 17, 2010 · Brakes · 200 miles · MO

Tl*the contact owns a 2010 toyota prius which was purchased in august 2009. She stated that whenever she applied the brake pedal during inclement or rainy weather conditions and uneven pavement, the vehicle lunged forward. The brakes would not engage and there would be a momentary hesitation. The dealer was contacted and advised her that it was normal and she must have been driving too fast. The contact confirmed she was not speeding and that even while traveling at speeds of less than 10 MPH or in a parking lot, the failure would occur. The ecu module and the ABS system was reprogrammed under the service brakes recall campaign id number: 10v039000. There were no additional failures since the repair was made. The failure mileage was 200 and the current mileage was 5,000.