The contact owns a 2010 Toyota Prius. The contact stated while driving in reverse approximately 2 mph, the brake pedal was depressed and the vehicle failed to stop. The vehicle crashed into a pedestrian and also an occupied parked vehicle. The contact did not sustain an injury however, the pedestrian suffered unknown injuries. A police report was filed of the incident. The vehicle was towed to an authorized dealer for diagnosis. The technician informed that the battery amperage was defective. The vehicle remained at the dealer for further investigation related to the braking issue. The manufacturer was notified of the problem. The approximate failure mileage was 36,000.

- Simi Valley , CA, USA

Every time I run over a road bump at slower speeds (10-20 mph) with light tap on the brake to slow down, the car accelerates itself at the top of the bump. When I see the bump, I push the brake pedal to try to slow down but it accelerates instead at the top of the bump. I called Toyota dealer service dept and reported the incident. I am concerned for safety reasons. Thank you.

- Silver Spring, MD, USA

I own a 2010 Toyota Prius which I bought in August 2013. On several occasions, approximately, 4-5 times a week, every time I run over a road bump or path hole at slower speeds (10-20 mph), the car accelerates itself. When I see the bump or path hole, I push the brake pedal to try to slow down but it accelerates instead. This has been happening to me since I purchase the vehicle, the most recent time this happened was today, Tuesday, June 3, 2014. Today's surge in the acceleration was more than before. I immediately called Toyota and reported the incident. I understand this has been an issue since this car was released in 2009-2010 and many other owners reported it in the past. I am concerned for safety reasons, kindly have Toyota address this issue as soon as possible. Thank you.

- Centreville, VA, USA

Ever since acquiring this vehicle earlier this year, I have been experiencing loss of breaking for a second every time I hit a pothole and bumpy spot. It happens every other time. Upon goggling this problem, I learned that the problem was first reported to NHTSA way back in 2009. But I do not see any recalls related to this problem. Your website says you have received about 33 complains. Unless I missed something, is there any status report from Toyota or the recall that specifically addresses this problem? also, I live in the East coast, specifically in NJ. We had a brutal winter this year. In one incident, I was driving up a slightly elevated road (barely 2--5% incline) in a 25mph residential road with slightly slippery road (not really black ice per SE). I loss control and traction control lite up and started beeping. While trying to bring the car in control, my car ended up on the other side (thankfully there were no vehicles parked on the other side or any oncoming vehicles) and then shifted to the right but finally managed to bring it back in control. Other misc information: I learned about a recall earlier this year related to ECU board programming update from the news media (since I was a new owner, Toyota probably didn't have my information so never got recall notice) and I went to the dealer for update. I was hoping software update might also address pothole/loss of break problem but it has not helped.

- Carteret, NJ, USA

2010 Toyota Prius 2, depressing brake as I approach stop sign, hlt a small bump or pot hole. Car brakes release even though my foot is still on the brake. I lurch forward and have to stomp on the brakes. If there was a car in front of me or a pedestrian, I would probably would have hit them. I thought this problem was fixed in the last recall. Experiencing it everyday, I thought this problem was fixed in the last recall !!!!!!

- Rosedale , MD, USA

Driving down street slight down hill, depressing brake as I approach stop sign, hlt a small bump or pot hole in street. Car brakes release even though my foot is still on the brake. I lurch forward and have to stomp on the brakes. If there was a car in front of me or a pedestrian, I would probably would have hit them. I thought this problem was fixed in the last recall !!!!!!

- San Francisco, CA, USA

When braking, if a pothole or bump in the road is hit, the car seemingly jerks forward/accelerates for a split second. This happens on almost a daily basis and has been experienced by all drivers of the car.

- East Amherst, NY, USA

The contact owns a 2010 Toyota Prius. The contact was driving 10 mph in a parking lot and made a left turn when another vehicle crashed into the front passenger door. The contact depressed her brakes immediately but the brakes failed, causing the contact to drive over a stop sign, a curb and then crashing into two apartment A/C units. The air bags failed to deploy. There were no injuries and a police report was not filed. The manufacturer was not made aware of the failure. The contact was awaiting a ruling from her insurance adjuster to determine whether or not the vehicle would be deemed as destroyed. The failure mileage was 50,000.

- Woodbridge , VA, USA

Continual braking problems with my car. At low speeds applying the brakes on a slippery or bumpy surface, there is a complete lack of braking for a very short period of time. The car seems to accelerate. This was supposedly fixed by a Toyota recall. (ssc aob) which I had performed. Still have the problem. I have complained many times to different Toyota service departments. The answer is always they cannot duplicate the problem. (this last time they told me that, and they didn't even road test it.) have complained to Toyota corporate 5/26/2010, file #[xxx]. they called me back, on 6/7/2010, still no fix yet, will contact me when a fix is available. I usually drive this car, my wife drove it today, and it happened to her. Scared her to death, does not want to drive the car anymore. Help! information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- Manchester, CT, USA

If the vehicle hits a pot hole while slowing down, there's a sudden loss of braking power and the vehicle moves a few feet forward. The vsc light comes on at the same time. I'd noticed this a few times in the past but with the roads deteriorating after a bad winter, the pot holes are bigger and this is very prominent and scary. Going to take to the dealer for inspection. I feel it's definitely an issue with the braking system.

- Hamilton, NJ, USA

ODI # 10556900 further incidents with my Prius.

- Chatham, LA, USA

When parking, my 2010 Prius accelerated forward causing it to go over a curb form damaging the front bumper. Unexpected acceleration has caused four accidents damaging my car. I have records of these repairs. The hybrid system went out 8/30/2013 and in March,2014 the back brakes fell off: No bolts, pads, caliber, fluid were in place when it was towed to robbins Toyota in texarkana, tx. The front right booster was blown out while in this shop. My vehicle there over a month for various reasons.

- Chatham, LA, USA

This has occurred on multiple incidents. This car does not stop properly on rough roads. When hitting a pothole, bump, manhole cover, rough road while applying the brakes, instead of stopping, the car surges forwards approximately 5-10 feet as though there were no brakes. Eventually, the brakes work and the car stops. But it can be really scary. I have taken it to Toyota several times, but they cannot "replicate the incident." Basically, I think they drive it around the block and it doesn't happen. It is always worse with the summer tires vs the studded winter tires. They say it has to do with the regen brakes switching to the anti-locks, but I regularly drive rental cars with anti-locks for work in other cities, and I know what anti-locks feel like. I have never felt the "chatter" one feels when the anti-locks kick on. I do not believe the anti-locks work properly on this car. On May 3, 2012, I had to replace the right rear brake (rotor, plate, pads) due to unexpected corrosion. My car had ~17-18,000 miles on it and was only 1.5 years old! I have never had to do this on any other car. Now at 27, 000 miles, mendenhall Toyota says I need to replace the rear brakes again. I just replaced the front brake pads last week. But there is a nasty squeal that I reported to them last week and they did nothing. Either they are ripping me off or the brakes on these cars are defective and dangerous. Please do something. Toyota refuses to listen.

- Auke Bay, AK, USA

Applying brakes, either gradually or with force, while front left or front right tire travels over a pothole or sunken manhole cover results in temporary (< 1 second) complete loss of braking power. Brake pedal is depressed through the entire duration of the incident. Loss of braking power results in driver applying brake with more force. When brakes resume power, the increased force results in a sudden drop in speed. This incident increases the risk of a rear end collision either to a vehicle in front or from a vehicle behind the Prius.

- Pittsburgh, PA, USA

When applying light to moderate braking in preparation to make a right turn, I went over some bumpy pavement and the car seemed to lurch forward. It was probably a loss of braking rather than actual acceleration, but it was very disconcerting and I'm lucky it didn't cause an accident. I now have over 49,000 miles on the car and this has happened on quite a few occasions. I know there was a recall on some 2010 Prius vehicles for this problem but my car was not recalled. My dealer says there is no "software fix" for this problem. I find it unacceptable that Toyota doesn't have a solution for this as it is a real safety issue. It's just pure luck that I haven't been involved in an accident with possible injuries or worse. I intend to pursue this again when I bring the car in for the 50,000 mile service and inverter recall, but I'm not very hopeful. Maybe if more owners lodge a complaint on this site, Toyota will be forced to correct this issue.

- White Plains, NY, USA

As I was approaching a red light I applied the brakes and then shortly after hit a pot hole and the car lunged forward as if accelerating on it's own. Fortunately there wasn't another vehicle in front of me as I would have most definitely rear-ended it. I almost shot into the intersection and most certainly shot past the normal stopping spot for waiting at a red light. Scary incident to say the least.

- Hamburg, NY, USA

Brakes on vehicle occasionally momentarily disengages when I hit a bump, particularly on a slipper surface, while braking at low or moderate braking. This has happened multiple times. It is very obvious when this happens. Recently it happened with my wife in the car, I was braking moderately, the brakes fully disengaged for about a second, when they did I increased pressure on the brake pedal and the car severely lurched when the brakes re-engaged. The 2010 Prius had a recall for this, but mine is late in the model year and was not subject to that recall. Toyota usa and the dealer, of course, says there is not a problem and that they cannot do anything about it.

- Ellicott City, MD, USA

I came to a red light and was braking and as it almost came to a complete stop it jerked forward. Thankfully there wasn't a car in front of me otherwise I would of hit it. I'm taking it in soon. I don't drive it everyday and when I do it's less than a mile.

- Kettering, OH, USA

The contact owns a 2010 Toyota Prius. The contact stated that when braking to a stop, abrupt force had to be applied to the brakes in order for the vehicle to respond. The vehicle would slide abnormally and there was a decrease in braking distance. The vehicle was included in NHTSA campaign id number:13V235000 (service brakes) and was serviced however, the failure was not corrected. The manufacturer was made aware of the brake failure numerous times. The vehicle was not fully repaired. The approximate failure mileage was 10000.

- Charleston, WV, USA

Please let me state that I am extremely happy with the dealership that I bought the car from. All services from oil changes to repairs have done by this dealer only. But ever since I purchased this vehicle, I have been constantly complaining about a strange braking issue. When I am traveling 25 mph or above and hit any kind of imperfection in the road ( ie. Railroad track, dip, pothole, manhole cover etc.) my brakes disengage for a split second. I will still have my foot on the brake and go over imperfection and for a brief second the car surges forward rapidly and then the brake engages again. I have complained about this more than 3 times. All three times the dealer says that they can not repeat this issue. I now have 70,000 miles on the car and this is still happening. Although I am the primary user of this vehicle, my wife refuses to drive the car calling it unsafe. Today 3.25.2014 I have dropped off the car at the dealer for a recall and I have mentioned the problem again, my service adviser is now telling me that this recall (software update for motor generator ECU and power management ECU) should take care of the problem.) he explained that they are updating the software brake stop technology. The above recall letter explains the condition that is being remedied and does not translated to the conditions that I am complaining about. Please help me with this serious issue.

- Whippany, NJ, USA