Since purchasing my 2010 prius in august, i have experienced multiple episodes of car feeling as if it were suddenly accelerating when going over bumps, potholes or other irregularities in the road. i believe when this happens i often already have my foot on the brake, but i find myself having to slam the brake on harder to prevent what is at least a strong sensation of the car "taking off". feels just like when riding a horse and it is about to bolt! went to dealer in september or october, and they completely blew me off, said "nothing is wrong", no other reports of this happening (clearly a lie it now appears). *tr
Tl* the contact owns a 2010 toyota prius. during brake application while making a left turn onto a gravel road , the vehicle surged forward. identical failures occurred three times. the dealer was contacted and they stated that they did not have any reports of the failure. the vehicle has not been diagnosed. the failure mileage was 2800. the current mileage was 6000. updated 01/29/10 *bf updated 01/29/10.
On 8-21-09, i took delivery on a 2010 toyota prius hybrid. since taking delivery, i have experienced intermittent ,momentary ,unintended acceleration and intermittent,momentary loss of braking. on 1-10-10, i took it in for the 5000 mile maintenance check, but did not tell the dealer my problems ,because i thought the car was still in a "breaking in" period and would resolve itself. but when i heard today 2-4-10, that the nhtsa was opening an investigation of the 2010 prius, i decided to add my complaint to the others. *tr updated 03/04/10 *bf
I purchased a 2010 toyota prius on 8/26/09. the car would accelerate when i stepped on the brake to slow the car down at a stop sign or red light. i brought the car to plaza toyota on 12/23/09 after this occurred more than 50 times. toyota told me that there was nothing wrong with my car and i'm the 1st one to complain about this problem. on the receipt (r/o # 6311675/1) from this visit, toyota stated," tom the toyota field tech determined that the feeling that the customer is experiencing is normal and that the regenetive braking system and hydraulic system is transferring and that's normal." since that visit, this problem has only happened 4 times. in regards to braking on slippery roads, the car has slid 2 different times before gripping the road. also, toyota claims that the prius gets 51 mpg, this car has only been averaging 33 mpg in city driving. *tr
Tl*the contact owns a 2010 toyota prius. while driving 10 mph over railroad tracks engaging the brake pedal the vehicle failed to stop and accelerated. the failure occurred intermittently; therefore, when she took the vehicle to the dealer for routine maintenance, she did not mention the failure. she will take the vehicle back to the dealer to be diagnosed. the failure mileage was 4 and the current mileage was 5,600. updated 08/12/10
When backing up, the car will, on occasion, automatically accelerate excessively. this causes the driver to need to step aggressively on the brake in order to control the car. this cycle of "race and brake" continues until our need to reverse is complete. once we are in drive there is no further problem. this has occurred about six times since we purchased the car in late july. it has most often occurred when it is the initial drive of the day, but the most recent time the car had already been driven 100 miles and had been idling for several minutes. we contacted the dealership from which we bought the car. they have not heard of the issue. we also took it into our local dealership. they were, of course, not able to replicate the problem. no resolution or correction has occurred. *tr
Tl* the contact owns a 2010 toyota prius. while driving over large and small speed bumps the vehicle accelerated without warning. as a consequence his risk for serious injury and crash were increased. he is in the process of having the vehicle inspected to determine the cause of the failure. the failure and current mileages were 1,000. updated 09/14/09 *bf the consumer stated on 6 separate occasions , with 2 different drivers, sudden, brief and unexplained engine acceleration was experienced when a bump was hit in the road while applying the brakes. the driver could hear the engine rev up and there was a surge of power from the engine despite his foot not being on the accelerator, but being on the brake. in each of the 6 incidents the consumer and second driver were able to stop safely, bit were put at risk of an accident and/or injury due to the erroneous acceleration. updated 09.15.09. *jb updated 10/13/09. *lj the consumer stated the cruise control was not engaged and it didn't feel like the anti-lock brakes engaged either. updated 10/13/09 the consumer also experienced braking problems as well. the consumer stated the problem has greatly diminished. updated 02/05/10.
Information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6) february 15, 2010 at 3:29 pm i spoke to [xxx] at toyota 1-800-331-4331 about problems i've experienced with my 2010 prius. i told her about the cruise control danger, where the car had been going along nicely on cruise, but suddenly rapidly accelerated when, on august 11, 2009, i was on the trip between new jersey and illinois coming through the tennessee/kentucky area. i had been traveling at about 65mph on cruise and it rapidly accelerated to over 80mph and i panicked while trying to get it to slow down. i tried slowing it down using the cruise button, then depressed the cruise off button. didn't work. it did not respond immediately to the brake until i braked really hard. therefore, my driving it was severely limited to driving at very low speeds in town. other unintended acceleration has occurred even when not using the cruise. the car bolted forward numerous times on a bumpy section of road on my route home from work; it happened often enough there that i compensated by taking a different route. efforts to stop the forward lunge included braking with no response, using the knob to shift to a different setting, and scrambling to find the [xxx] button to press park. something finally stopped it, but i don't know what. the next scare occurred after it snowed. i drove slowly on the plowed road, but when the car encountered snowy lumps it rapidly accelerated lunging forward again. my attempts to stop caused me to skid dangerously into oncoming traffic lane. i parked the car in the garage and have not driven it again in well over a month due to the danger. in february, my co-worker[xxx] urged me not to drive the car because she had heard about a recall and was afraid for me, but i had already parked it by then ' knowing something was wrong with it. it has not been driven since prior to my learning that others have had similar experiences ' some have died or been injured as a result.
I have experienced two problems with my 2010 prius v that i purchased last summer. first, on approximately 6-8 occasions, my car has not stopped immediately when i applied the brakes. this occurred 3-4 times when i approached a stop sign on a road between my home and church. the surface of the road approaching the stop sign had been scraped and roughened to get ready for re-paving. as i approached and applied the brakes, my car surged forward for about a second, but i was able to stop. this happened 3-4 times in other locations, as well. it is an incredibly strange and helpless sensation. this problem was probably noted between late august 2009 and last occurred about three weeks ago. even though i was forced to put an exact date in the field below, i have no idea now when the exact dates were in which this braking issue occurred. when i brought my car to the dealer for its first oil change, i described what had happened but was told this had nothing to do with the other problems that had been identified in the media as to other cars. the person at the service desk just kind of ignored my comments and was not interested in hearing about the braking issue further. the second problem i have experienced is that when using the cruise control accelerate function the car just continued accelerating even though i was no longer turning the cruise function lever. this stopped when i applied my brakes. it did cause me to stop using the cruise control during that trip though. the cruise control issue probably occurred last august in i-5. *tr
Sudden unintended acceleration, momentarily loses braking when it goes over uneven roads, potholes ..etc. occurs several times a day. *tr
Tl* the contact owns a 2010 toyota prius. the contact stated when depressing the brakes to stop the vehicle it is grabbing and jerking. while using the vehicle's speed control upon setting it the vehicle would accelerate, but when the brakes are applied the vehcile would operate normally. the contact stated that he monitors the failures. the vehicle has not yet been diagnosed by the dealer.the failure mileage 6,200.
I own a toyota 2010 prius. i complained to the dealership where i bought my car in july at my first service/oil change about a sudden surge in speed while driving over bumpy surfaces. i presented them with internet information i had copied from consumers having the same problem but they would not take them from me. they serviced the car, drove it and returned it to me saying they found no problems and that i was the only person who had ever complained about it. they said they knew of no other similar complaints. i asked them to put on my bill the fact that this was happening to my car so that it would be documented for the future. they did not seem at all concerned at the time. it remains an ongoing problem when i drive. *tr
The braking system temporarily disengages when hitting a bump, manhole, gravel, etc. causing car to lunge forward. toyota of napervilee told me that some lunging is to be expected. it is scary when this problem occurs because you have no control of the brakes. i'm concerned that it may result in a future accident. *tr
I have a 2010 toyota prius. approximately 10 times since i bought the car in july 2009 it has jolted forward while i am applying the brakes when i drive over a pothole or bump in the road. *tr
Tl*the contact owns a 2010 toyota prius. the vehicle accelerated on its own while driving 30 mph, when the contact attempted to stop at an intersection. the failure occurred six times. the driver stated that when the failure occurred they were unable to stop the vehicle. the toyota dealer stated that there was nothing wrong with the vehicle. the failure has occurred for over 9 months. the contact has not received a recall notice from the dealer but she is aware of an existing recall. the failure mileage was 2,500. the current mileage was 5,500.
My 2010 prius has had these problems, which are not being addressed by toyota. 1)gas pedal stopped working at all on two occasions going 20-30 miles an hour. had to pull over, turn car off, restart it. then it worked. hasn't happened again. 2)cruise control is very difficult to stop with brake. this is consistent. i have stopped using the cruise control because it has almost caused me to rear end another vehicle on several occasions. *tr
Tl*the contact owns a 2010 toyota prius. the contact stated that while driving 10 mph and engaging the brake pedal, the vehicle briefly accelerated on its own and the brakes malfunctioned. the failure has occurred 10 times since the vehicle was purchased. the dealer was contacted and they stated that was a safety feature. no repairs were made to the vehicle. the failure mileage was 500 and the current mileage was 4826.
While applying the brakes to slow down or to come to a stop, if the car hits a bump, pothole or the like, the brakes release momentarily, causing the car?s momentum to continue forward longer/further than you would normally expect or want. this is especially dangerous when coming to a stop at a new york city pedestrian crosswalk or trying to slow down with a car close in front of you. i brought the car into the dealership and had it evaluated by toyota's field technical specialist who reported the following, ""when [the car] senses impending wheel slip, it will first disable the regenerative brakes. when it does that it feels like the car sort of accelerates because you lost the regenerative braking and you're using the brake assist that you have from your foot. so that is 'normal operation' on the system. it is working as designed." despite the explanations for why this is happening and whether or not this is ?normal operation?, the bottom line is, if the car is not stopping when it should, the safety of passengers and pedestrians is in jeopardy. i called and wrote two certified letters to toyota's customer experience department and to akio toyota, and received a phone call from an executive analyst from the president's office. no toyota representative would do anything in regards to the problem--they maintain that the braking operation is normal. i have seen other complaints on the nhtsa web site and on prius owners blogs that contradict toyota's assertion and support the claim that the brakes are indeed a safety issue that must be addressed.*tr
Toyota prius 2010, sudden surge of power, when slowing or braking to come to a stop. extremely dangerous in traffic or when parking. have reported to toyota, who claimed no knowledge of prius's having this default. another said this was a common function of the hybrids. recent service dept. claimed checked but found no evidence. this problem happens intermittently. because we know of this problem, are extra cautious. *tr
I saw an article about the 2010 prius lunging when hitting a bump or pothole. i own one and have had the experience on more than 1 occasion. *tr
2010 toyota prius iii, purchased december 2009 from dch brunswick toyota, north brunswick, nj 08902 i experienced atleast 3 different incidents of the following, sometimes at the same spot on a road - when braking, if a pothole or bump in the road is hit, the car seemingly jerks forward/accelerates for a split second. *tr
I bought at 2010 prius on 12/26/09 from the very beginning intermittently when i go to stop the car won't stop (my chest tighten) its as if the back of the car is being pushed forward even though you have your foot on the brake. you a get a hesitation and then the car stops. my husband said it was the traction control i was not use to it.but the traction control light does not come on. its is getting harder and harder to stop. now even the passengers hear and feel the problem. yet when i call toyota to bring the car in they say there is no recall. *tr
Brake failure on our 2010 prius. *jb updated 02/17/10 *bf the consumer also stated he experienced sudden acceleration. updated 03/05/10