While driving with cruise control engaged and a situation occurs that requires braking; normal brake pedal pressure does nothing. I have to hit the brakes extra hard which significantly slows reaction time. This problem occurs randomly. When I took the car to the dealer I could not get the problem to repeat.
2010 Toyota Prius acceleration complaints
Page 8 of 11: complaints 191 to 220 of 287, newest first, as owners wrote them.
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
Toyota 2010 prius - problem with car accelerating when I brake on bumpy surface. Has occurred repeatedly as on my drive to work I drive over a potholed section of road and need to brake to slow down for a right hand turn -if I go very slowly and do not brake on the bumpy part it does not occur - when I drive at a normal speed and brake for the turn it does occur - I feel a major acceleration that lasts for only a second or two.
My 2010 prius accelerates when it hits a pot hole while slowing down. This happens more when there is snow or ice on the road. In icy conditions I am slowing down and not pressing on the brake, but if it hits a pot hole -- a momentary loss of control is experience. It seems like the electric brake switches off and hydraulic brakes kicks in because it brakes harder once back.
I own a 2010 toyota prius that I purchased in the fall of 2009. On several occasions I have depressed my brake pedal to either slow down or stop but , instead, the vehicle briefly accelerates and gives a feeling of "skipping" over the braking action. The vehicle then quickly corrects before stopping or slowing down. This has happened on more than one occasion on very specific types of terrain that I can describe as bumpy or uneven. I placed a call today with my toyota dealership in which I explained the above narrative to them. They responded with ignorance to the situation and stated that they will wait to hear from toyota on the matter.
At 8:00 am this morning, I was driving through a street at a speed of 20 miles to 30 miles per hour. Suddenly, the car jumped a little probably hit a small potholes or bumps. I felt like the car surged forward or may be the brake didn't respond immediately. Fortunately, no other car right in front of me and the car speed is not very fast. I was able to brake it and slow down. I have called the dealer and the service representative doesn't think it is a problem. Later, I also sent a fax to toyota us headquarter asking for help.
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 federal safety agency was opening an investigation of the 2010 prius, I decided to add my complaint to the others. *tr updated 03/04/10
When driving over uneven terrain (ie.; railroad tracks, bumps in the road) my 2010 prius seems to accelerate. I read about the brakes failing... But it really feels like it is accelerating too. It is very scary when this happens as it feels that you will be thrushed into whatever might be in front of you.
My 2010 prius (purchased 6/30/09) lurches forward when I hit a pothole or a sharp bump in the road while I have the brakes on. It has happened about 3 times since I've had the car.
I purchased a new 2010 toyota prius in september 2009 from darcars toyota in frederick md. I have experienced (2) instances of unintended acceleration during the time since I purchased the vehicle. I have informed darcars toyota and toyota corporation. Darcars ran a "health test" on february 4, 2009 on my vehicle and the test indicated everything on the vehicle was operating normally. Darcars then contacted their toyota california (tac) and related my problem to them. The response from toyota was that my episodes of unintended acceleration was just the ABS system engaging normally. This is after the press release from toyota corporation on the morning of 02/04/10 acknowledging a problem existing with the 2010 prius but claiming to have already fixed the problem on all new 2010 prius automobiles sold since january 2010. My two questions are 1) if toyota discovered a problem with the 2010 prius that they supposedly repaired on all 2010 prius vehicles sold since january, why has toyota not contacted me about what is an obvious safety issue? I have owned and been driving my 2010 prius since september '09. 2) what is the specific repair that was supposedly performed on all 2010 prius automobiles since january 1, 2010? Why did my toyota service manager have no knowledge of such a repair? Was there a safety bulletin issued by toyota? Why has toyota not already agreed to repair my 2010 prius (sold in september '09) with the same repair allegedly already performed on 2010 prius automobiles sold after january 1, 2010?
I have experienced a sudden acceleration type problem when driving over rough pavement and potholes, etc. The acceleration is for a split second and I suspect it may be related to the lack of traction from the tires. It does not appear to have anything to do with loose floor mats or a sticking pedal. No repairs have been made. Dealer said they never heard of the problem when I went in last week. I was offered to have it brought into service depart. It does not happen on command so I am going to wait for the federal safety agency investigation.
Design flaw on a brand new 2010 toyota prius that makes rattling noise near the gear shift lever that could brake the gear lever.
I have a 2010 prius. On at least three occasions, in the last six months, the following has occurred. When I am traveling and I apply brake pressure the vehicle begins to accelerate. No matter how hard I press on the brake pedal it does not slow down or stop the vehicle. It actually begins to speeds up while my foot is pressing down on the brake pedal. The acceleration has only lasted approximately 5-6 seconds. However, it is very frightening when you are traveling at a high rate of speed and trying to slow down especially off a freeway off ramp. The last thing you want to do at that time is accelerate even if it is momentarily. This has occurred in various places. It has happened while I am getting off of the freeway and on city streets. There was nothing I did in particular that corrected the failure. The prius just stopped accelerating on it's own.
Sudden unintended acceleration, momentarily loses braking when it goes over uneven roads, potholes ..etc. Occurs several times a day.
I have a 2010 toyota prius that I bought in december, 2009. Six or seven times, I have noticed that the car lurches forward (like someone is flooring the gas pedal) every time I hit a pot hole. I thought it might be just me, but I saw in the paper today that others have noticed similar problems with their prius.
Car did not brake properly and slightly surged forward on many occasions when I drove over a manhole cover and speed bumps at lower speeds. In one occasion, I rear ended a car and cracked my license plate frame but since there was no further damage on any of the cars involved, we agreed to drive away.
I was driving my 2010 toyota prius using cruise control on a highway. I disengaged cruise control to slow down as a vehicle entered the highway in front of me. Once the second vehicle had accelerated ahead, I re-engaged cruise control at my desired speed. The cruise control engaged, but continued acceleration, as if I was activating the cruise control mechanism's accelerate "paddle", which I was not actually doing. I immediately dis-engaged cruise control, slowed to my desired speed, and re-engaged cruise control. At this point, the cruise control resumed proper operation and I was able to drive at my selected speed.
2010 toyota prius. I have experienced on at least 3 occasions, a surge when going over a bump or pothole. I spoke to my law partner about it yesterday. Today he showed me the investigation you have opened into this issue.
Toyota prius 2010. Problem reported to dealer 12-18-2010. Brakes become inoperative when passing over uneven surfaces, vehicle also at this time vehicle lurches forward. This occurs frequently. Contrary to your form requirements there is no one "approximate incident date". Shifter sometimes is difficult to put into neutral, rather it will instead go from drive to reverse. If there is also a sudden acceleration problem, this could be a big problem when trying to regain control.
While turning off four lane road onto frontage road with foot on brake pedal my car suddenly started accelerating. I applied more pressure on the pedal quickly and got a sort of clunking sound and the car returned to normal driving speed?
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.
Tl*the contact owns a 2010 toyota prius. While driving 20 MPH he applied the brake pedal; however, the vehicle did not slow down instead it accelerated at various speeds. The dealer was unable to duplicate the failure during a test drive. He stated that the failure occurred six times intermittently contact is concerned that if he continued to drive the vehicle the failure could cause a crash to occur. The failure mileage was 9,000 and the current mileage was 10,500.
2010 prius which lurched forward each time I hit a certain pothole while braking. I avoided the problem by avoiding the pothole. The pothole was located near a stop sign, so I was always braking when I hit it.
On three occasions, my 2010 prius "leapt forward" when I drove over a man-hole cover. I have read the description of the braking issue on the 2010 prius and it sounds exactly like my experience. It only lasts for a fraction of a second, but it is quite frightening when it happens.
When driving and braking, if you hit a bump or pot hole, the brakes release and the car doesn't slow down. This has happened a number of time since I bought the car in august 2009.
Braking while driving over a pothole causes the 2010 prius to momentarily feel like it's accelerating rather than braking. This has resulted in near-accidents a couple of times. This happens more consistently when turning while braking over uneven pavement. I can repeat this reliably in specific location, and it happens elsewhere too.
On at least two occasions, I have had uneven, jerky acceleration from my 2010 toyota prius. Acceleration was from a stand still and was at low rates of speed. Both instances have occurred when the vehicle was cold, but the ambient air temperature was probably above 30 degrees.
I own a 2010 toyota prius..purchased in august 2009...currently going for 15k miles on the odometer. I want to report issues with sudden acceleration even when I am stepping on the brake. I noticed every time I pass thru uneven road, for example potholes, icy roads, snow. The most common issue I have is as I am going down the road and car hits a pothole or manhole (those with metal covers) the car will suddenly accelerate, although I am stepping on the brake. Sometimes I am afraid I will hit the car in front of me, especially when im in traffic. Even going at 5-15 MPH, the car will accelerate when it hits uneven road like pot holes or icy roads. This has happen quite a few times since I purchased the vehicle. Just yesterday, we had about 1-2 inches of snow. I was driving slow and when making a left turn, the car hit some uneven road and snow and accelerated when I was stepping on the brake to make the turn. The car went up the sidewalk and the bumper cracked as it hit the concrete edge that separates the road and the sidewalk. No one was hurt and no property damage was done. The car is working fine, but this sudden acceleration issue is a major concern, especially now that I read and hear in the news that 2010 toyota prius are being reported with complaints of sudden acceleration. I thought my issue was an isolated case. Please take this complaint into account. I will be going to the dealership this weekend for the 15k scheduled maintenance and will report the issue to them.
When slowing down over bumpy surfaces, the car temporarily loses braking control (for a second or so). It is terrifying and needs to be looked into. There are hundreds of people online who have reported this exact same problem.
I own a 2010 prius and took the car into the local toyota dealer 2 days ago for the initial 5,000 mile check up to discuss a couple issues I have found with the car. I have experienced on 3 occasions a feeling of brake failure. This has occurred when I am driving over rough road. While the brake is being applied if I hit bumps, the brake pedal drops and I lose the brakes. I have immediately let up on the brake and then reapplied pressure to the brake pedal to get braking back. The dealer tried to achieve the same problem but was unable to replicate it. He said it was just the way the pedal must feel to me. Our daughters both have 2006 prius' which I have driven and never experienced this problem with their car brakes. The second problem is with cruise control. Again, I have driven a 2006 prius and used cruise control and not experienced the following in the 06 model that occurs in our 2010 model. The car started to accelerate in cruise mode. We have also found it takes a lot of pressure on the brake pedal to take it out of cruise control. The car jerks when tapping the brake pedal lightly to take off cruise control. The dealer again took it out for a test drive and said this is the way the prius feels. I know driving the 2006 model it was not the way the prius feels when you take it out of cruise control.
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