Problems with 2010 Toyota Prius SERVICE BRAKES, HYDRAULIC

I own a new 2010 prius. it has 1800 miles on it. while driving with someone else in the prius, there was a braking problem. we both felt a loss of braking by the prius when i was braking for a right turn and went over a bumpy section on the road surface. the prius experienced a momentary complete loss of braking over the bumps. it felt like we actually accelerated for an instant. in any case, the brake pedal was engaged firmly the whole time. the prius then slowed down normally, and i made the turn at the corner. but we both looked at each other in surprise at what we felt during that braking event leading into the turn. i called the dealer and had them look up the computer patch history on this car. the dealer stated that all the computer patches had already been applied to this car before it was delivered as new. so far, this has only happened once. i have been driving the new prius for only 1800 miles. it was purchased new off the dealer lot aug 2010. it happened in oct 2010. extreme loss of braking over bumpy road surface. i have many years of driving experience in many types of cars on many different road surfaces. i have never experienced this type of momentary complete brake loss before. *tr

Loss of braking effectiveness. happens when going over bumps while applying the brakes. you don't lose braking power completely, but it would be like you had lifted your foot off the brakes partially. it has happened about a dozen times since i have owned the vehicle (a little over a year). i am unable to determine what factors make it happen. i don't know if it is speed, severity of the bumps, or braking pressure, or combination. i know that temperature makes no difference, as it has happened in winter and summer. the last incident happened when a bicyclist moved in front of my car to avoid bumps. i applied the brakes (it was not severe), and as i went over the bumps, i lost braking power. my speed was approximately 15 mph. toyota has done a recall on the brakes, but i continue to have the problem. i have talked to other owners, and they are having the same problem, even after the recall. the consumer stated when he drove over a bump in the road, the braking decreased significantly for approximately 3 seconds. he also stated the engine raced briefly, but the vehicle was not in gear at the time. updated ivoq 03/01/11 *tr

Tl*the contact owns a 2010 toyota prius. while traveling 2 mph the contact applied the brakes and noticed that they would not engage causing the contact to crash into a wall. no one was injured and a police report was not filed for the incident. the vehicle was taken to the dealership where the contact was informed that the failure could not be reproduced. there were no prior warnings. the current and failure mileages were 1500.

Tl* the contact owns a 2010 toyota prius. the contact was driving approximately 5 mph when the anti-lock brakes engaged independently and caused the vehicle to come to a sudden halt. the vehicle was inspected by the dealer who was unable to diagnose or duplicate the failure. the vehicle was not repaired. the failure mileage was approximately 100.

Brake failure. 2010 toyota prius iv -- the vehicle's brakes lose pressure and the brake pedal loses pressure (regardless of how hard i press on the brakes as this is happening). the brakes are temporarily disabled and the vehicle unexpectedly accelerates as a result of its momentum prior to initializing the brakes. the failure occurs when the vehicle passes over a dramatic change in the texture/friction of the road surface. i have experienced the failure dozens of times, when driving over metal surfaces (manhole covers, pothole covers, temporary construction covers, metal expansion inserts in bridges, etc), as well as small patches of condensation (such as small puddles under a bridge when the surrounding road is dry). the failure is not related to hydroplaning, and has occurred at speeds as low as 15 mph. the failure causes the vehicle to accelerate until a few seconds after it has passed over the slick surface. after returning to the regular road surface, the brakes slowly regain traction and resume their function of slowing the vehicle down. this failure occurs every time these criteria are met -- regardless of whether road conditions are wet or dry. so far no accidents have resulted from this failure on my vehicle, but i have been unable to control the problem or decrease its effects. again, this problem occurs even at low speeds, such as in city traffic while braking to stop at an intersection. many times it has caused me to nearly hit the vehicle in front of mine. so i have been forced to leave an extra 40 feet between my vehicle and anything in front of me, which is not always feasible because i live in an urban area. i have already taken this vehicle into the toyota dealership as part of their recall to fix the software which controls the interactions between the hybrid brakes and the normal disk brakes. local dealerships have consistently denied that there is a problem with the vehicle and the toyota company will not return my phone calls. *tr

Tl*the contact owns a 2010 toyota prius. while driving 20 mph over rough terrain the contact applied the brakes and they failed to engage. the vehicle was not repaired nor was there a diagnostic test performed. there were no prior warnings. the current and failure mileages were 6000.

Tl*the contact owns 2010 toyota prius. while driving approximately 15 mph and applying pressure to the brakes, the vehicle would not stop. the vehicle was taken to the dealer but the technicians were unable to duplicate the failure. the manufacturer stated that they could not assist with repairs if the failure could not be duplicated. the vehicle was not repaired. the failure mileage was 1,000 and current mileage is 6,000.

I purchased a new 2010 toyota prius (model 3) in late july 2010. in almost every respect, this car is wonderful. however, the car has consistently diminished (apparent) braking effectiveness when the brakes are applied and the car goes over a patch of rough road, pothole, etc. when the brakes are applied with a consistent pressure, the car "feels" as if the brakes disengage upon entering a rough patch of road. this happens every time. (for example, i notice it every time i slow down at my street corner where there is a long-standing patch of rough pavement.) since 1994 i have owned 7 cars with abs (hondas, nissans, and toyota camrys), i have never experienced a similar sensation in any of these other cars. i have adapted my driving style to this anomaly, but i worry about my kids and friends who may occasionally drive my prius. it is unnerving to apply the brakes and have them feel like they are disengaging when you enter a rough patch of road. since this problem occurs consistently, i think it should be possible to test to see if this apparent braking anomaly is actually increasing stopping distances. (for example, test prius vs. model without apparent braking anomaly on smooth and rough roads to see if relative braking distances of prius are more heavily affected by rough roads that comparison model.) p.s. after purchasing my new prius, i noted that my dealer's service blog, had several reports of similar problems that were not corrected after servicing by the dealer. some posts noted that the dealer had applied a software fix that toyota distributed in early 2010. my car was manufactured after that fix. *tr

1. pulling in to a parking space, slight uphill angle, stepped on brake and car lurched forward over a barrier and into another vehicle. 2. the vehicle gave no prior indication of a problem. extensive damage to hood, bumper, right fender and radiator. 3. vehicle was towed to a repair facility. once repaired, vehicle was taken to dealer for diagnostic of brake failure problem where it currently remains. *tr

Was driving prius 2010 model ii with brake software applied by dealer about 1.5 months ago. today (7/27/2010) i exited highway and began gentle braking on offramp, as suggested by manual to maximize regeneration. about half-way down offramp, i realized car in front of me was completely stopped and that i had to stop much more quickly than i was planning to. i don't recall being particularly distracted, but i can't rule out i noticed the stopped vehicle later than i should have. in any event, i'm not sure how hard i pressed the brakes, but i recall distinctly thinking "oh, my god. nothing is happening" and 1-2 secs later i plowed into the car in front of me. the collision was hard enough to cause temporary pain to the driver in front of me, but no air bags were deployed and the prius appears to not have major frontal damage - hood is bent back and maybe slight frame distortion => the impact clearly was not at the ~40-50 mph i was going when just exiting the highway, so some braking clearly did occur -- but i have the distinct feeling that my previous car (subaru outbook) would have easily stopped in time. after accident, i tested brakes by going 15-20 mph in parking lot and braking hard. always stopped quickly, i'm guessing w/100% friction braking. so brakes are probably not "defective" in sense of lost hydraulic fluid, etc... but i have never before experienced the feeling "i'm not stopping" except once when losing traction on icy road with a non-hybrid. the fact had time to think this thought at all probably means maybe 0.5-1.5 sec passed while braking ineffective. checked for tire/skid marks on road or evidence of strong tire wear and found none, while i have on other cars when i have had to brake hard => prius not braking hard despite emergency. seem to have been caught in transition between regen & friction mode? this is still discussed in prius forums -- software fix not good enough!? this is potentially very dangerous. btw,car was in "eco" mode. *tr

Brakes do not work when decelerating and road is uneven or bumpy. we took the car in for the recall fix and the problem persists. brake failure happens 3-4 times/ week driving in seattle. *tr

While braking and the car is slowing down to below about 10 miles an hour, it will surge ahead if it goes over rough pavement or a bump. the abs recall has been performed on the car, and it was brought back into the dealer after the recall and the dealer confirmed that the recall was applied. the dealer claims that this behavior is "normal". the car has been back to the dealer two times so far. *tr

Tl*the contact owns a 2010 toyota prius. the contact stated that whenever she drove over a pot hole or railroad tracks the braking system did not function properly. the vehicle was taken to an authorized dealer who stated that the failure was due to a design flaw. the vehicle was not repaired. updated 10/28/10.*lj updated 10/28/10

Tl* the contact's brother owned a 2010 toyota prius. the contact stated her brother died in a head on crash. while he was driving at approximately 65mph north bound, a truck waiting at a traffic light was rear ended by another truck pushing the truck into the contact's brother lane of traffic. the contact stated witnesses advised her that brakes failed on her brother's vehicle and he was not able to bring the vehicle to stop when he saw the truck approaching. the police report was not available. the vin was unknown. the failure and the current mileage was 21,000.

I own a 2010 toyota prius, and last week i had the abs ecu updated per the recall. prior to the update, braking over a bump or pothole would result in a little 'skip' on the road as the brakes kind of fluttered. i just pressed the pedal a little harder and all was well. post update, i have a serious safety problem. i have experienced the brakes disengaging completely as the car hits a bump. the little 'skip' is gone, and now there's a panic moment where the car lurches forward with no brake pressure. i have to really mash the pedal the get the brakes back. prior to the update i was a little worried that the slight increase in braking distance might have resulted in a crash. now, i am very afraid. the car is almost uncontrollable when this happens, and it is always unexpected. i feel that if i crash, i will be held liable for something that isn't my fault. i ask the nhtsa to revisit the toyota recall for the 2010 prius and make them prove they fixed the problem. i do not think they will be able to. *tr

I have a 2010 prius that has had the brake recall fix applied. but when i am turning right applying the brake and then hit bump/chuck hole the brakes fade for just a few seconds. no accidents but does not give driver any confidence. *tr

2010 toyota prius, no accidents, but close calls. when i am slowing to a stop, and if the vehicle hits a rough spot in the road, for example a pothole, the brake pedal lowers slightly and the car appears to have the anti lock braking take over and the car speed decreases slowly under the control of the abs and may not stop in the remaining distance to a stop sigh or traffic light. at least 4 times, 3 since the software update for my car, i have been stopping and within about 20 feet of the stop sigh there was a significant bump or pothole and with my foot on the brake continuously i noticed that the brake pedal depressed slightly and my rate of slowing decreased and my car drifted past the stop sign. this all happened with my foot still on the brake. i told the toyota dealer about this and was informed that it is the way the car is designed, that any time that the computer senses a wheel slip, the abs takes over. but on dry road conditions, this is problematic because in my area there are often un repaired roads with ruts, potholes, bumps and etc. near the intersections. having the abs take over provides a lag time in the stopping of the car and each time i have gone past the stop sign and slightly into the intersection approximately 5 feet into the path of other vehicles. i am an engineer with nasa and know what i am doing and have been told that this is a design feature, but this feature can and has left me exceeding my planned stopping distance and could have lead to an accident. *tr

Today at yet another check for my 2010 prius to try to discover the cause for the continual surging, i was informed that 160 times in the last 1 1/2 months i have driven with both the gas and brake pedals depressed simultaneously. this is a ridiculous assertion and completely false. obviously there is an issue with the computer software in my prius brakes. this is further evidence that there is a serious safety issue with the prius brakes. *tr

Grabbing brakes: parked and sat in the car on a slight inclined driveway for some time listing radio. when i started backing up and tried to brake, there was no braking and then clunk clunk noise and car stops, tried again, same thing no braking and then little more pressure on brakes, clunk clunk noise cars stops. there was no way to smoothly glide the car down. this happened around 5 times. during last service i explained dealer about the problem but they could not reproduce it. *tr

I was driving the car on a road approx. 25 mph. i hit a dip in the road right as i was braking to make a left turn. the automobile surged forward despite my foot being on the brake. this has happened repeatedly since having the recall fix!!! this problem must be fixed. we have repeatedly contacted toyota about the problem and get the same answer every time - there is no problem. i do not consider it to be normal for the car to surge forward while my food is firmly on the brake. what does it take to get something done! we tried arbitration to get rid of our vehicle and toyota basically said that we were lying about the problem. please review and recall. i know by reading the other complaints that i am not the only one having this issue. this is a safety hazard!!! *tr

My 2010 toyota prius continues to experience the momentary loss of braking power even after the recall fix was applied back in march. i experience the same loss of braking power as i did in the past when going over bumps, pot holes and the like, especially when hitting the brake on a decline. i brought my car back to the dealership and a field tech specialist was unable to reproduce the problem - but i have experienced it a half dozen times since the recall and have notified toyota's hq - they have not responded. i continue to feel as if pedestrian, other driver, and my own safety are at risk with this continued brake issue that toyota cannot seem to fix. *tr

Our new 2010 toyota prius lost its brakes for a short period when driving down a steep hill at slow speed (10 mph). although i was pressing on the brake pedal the brakes completely released for roughly 2 seconds and then re-applied. we had just driven over a small but sharp bump. i understand how abs works, and this was not abs. the brakes completely released and the car "jumped" forward - it jumped because the hill was quite steep. what is most disturbing is that the car had just been serviced (may 29th) and the event happened may 31. when i called the dealership they said the car had been recalled for a brake problem but they had "forgotten" to do the recall. further, i have owned the car for five months and have not received a recall notice from toyota. *tr

All brake rotors had a crack perpendicular to the rotation. *tr

As noted in nhtsa investigation pe10006. i entered an incident date of 5/19/2010, but this happens consistently with my 2010 toyota prius (purchased oct. 2009). it is as described in the investigation summary; a momentary lapse in braking while traveling over uneven or rough surfaces. i had the software update performed last week and interestingly, it seems to have gotten worse since then. it's very disconcerting and alarming. fortunately, it's never happened when there is a car in front of me (as on the exit ramp of a freeway or prior to a stoplight), but if it does, i have no doubt that it will result in a crash, for which i will no doubt be wrongly blamed and cited. i'm to the point that i would prefer that my wife not drive the car and am considering what action i can take with toyota --- returning the car, some kind of financial compensation etc. when i had the software update performed, i noted the problem to the dealership and made them write it on the service order to document it. this complaint is also to document the problem. i should note that we own a 1996 4runner and a 2003 highlander (my parents own a 2010 prius and 2010 camry as well), so it's not like i have something against toyota. also, i travel a lot for my job (80%+) and over the last 6 months have probably driven at least 20 different makes and models of cars. this has never happened in any car i have owned or rented. *tr

Two issues within 5 minutes (will file two reports). first issue occurred while backing out of level parking space. brakes grabbed on and off as if i were pressing brakes firmly, releasing, then pressing firmly again, even though i was lightly holding the brakes as i was reversing. second issue occurred a few minutes later while braking on a descent, going approximately 35-40 mph. my front left tire went over a manhole cover which caused a mild bump, which resulted in a momentary release of the brakes. car was purchased new last week (may 13, 2010), has approximately 400 miles, and has no recalls outstanding. *tr

Two issues within 5 minutes (will file two reports). first issue occurred while backing out of level parking space. brakes grabbed on and off as if i were pressing brakes firmly, releasing, then pressing firmly again, even though i was lightly holding the brakes as i was reversing. second issue occurred a few minutes later while braking on a descent, going approximately 35-40 mph. my front left tire went over a manhole cover which caused a mild bump, which resulted in a momentary release of the brakes. car was purchased new last week (may 13, 2010), has approximately 400 miles, and has no recalls outstanding. *tr

Regenerative braking - loss of braking, when slowing over rough road surface approximately 5-9mph. brakes "go away", resulting in further pedal application to avoid striking vehicle ahead. incident occurs sporadically, however has occurred at least 8 times in the two months we've owned vehicle. *tr

2010 toyota prius. consumer states vehicle did not seem to stop immediately when he hit a bump. *tgw

Brake failure occurred when vehicle was coming off freeway exit ramp at approximately 40 mph on uneven, curvy road. while approaching intersection from several hundred feet away, brakes failed to engage for about a second; also felt the vehicle "lurch" forward in that lapse of time. repeated pressure on the brakes finally brought car to stop but not in time to prevent collision with incoming pickup truck on straightaway traffic. police arrived at scene but did not file report because nobody was injured. body shop estimated damage on front bumper at $1500. vehicle was brought in to dealer on 05/18/2010 for inspection. service manager said ecu brake recall had been conducted on said vehicle in february 2010 at different dealership. currently still awaiting on conclusive report from toyota engineers. car only has 1000 miles on odometer. brake failure has been experienced some ten times in the 2 months of owning this vehicle, usually during higher speeds over uneven road. came close to accidents on three instances, not including this actual one. this is a serious safety defect that could result in fatalities. please investigate! *tr

2010 prius - this car was recalled for a braking problem. the "software fix" was completed on my car, but the same braking problem still exists in the car. a follow-up visit to the dealer complaining of the problem still happening resulted in nothing being done to fix the braking problem. the problem : occasionally when braking over a bump the brakes disengage for a brief time (probably less than a second) and result in an increased stopping distance and possible accident. in other words the recall fix has done nothing to correct the problem - - if it was bad enough to have a recall - and it doesn't get fixed - then it must still be a significant problem.... this problem occurs often - but not easily demonstrated. it has happened since the car was new and we now have 11,000 miles and it still happens. *tr

While driving on bowman road in west little rock, i was braking as i approached the intersection at markham. the car suddenly felt like it was surging forward and not braking at all as i drove over a man-hole cover. this was especially pronounced as i was going downhill and turning to the right at the yield sign. my wife noticed it from the passenger seat as well. we momentarily felt as if we would not stop and end up in the path of oncoming traffic. this happened after this vehicle has already been recalled for this same problem. unfortunately, the software upgrade did not fix this dangerous problem. *tr

i was making a sharp right turn to pull into a parking space, slowing to a stop. the car suddenly and unexpectedly accelerated forward out of my control. i applied the brakes as hard as i could, with no response. as the car was racing into a tree, i shut off the engine by pushing the power button to off. the car knocked down a tree and came to a stop on top of it.

Tl* the contact owns a 2010 toyota prius. the contact stated while driving at speeds of 15 mph and attempting to brake, the anti lock braking system failed and the brakes would not engage. the dealer was unable to duplicate the failure and advised the contact that there was nothing wrong with the vehicle. previously, the contact received repairs to the service brakes and electronic control module under an unknown recall and stated the failure was not the first occurrence following recall repairs. the failure mileage was 11,100 and the current was 11,500.

Tl* the contact owns a 2010 toyota prius. while driving at speeds of 5 mph over a pothole with the brakes applied, the vehicle did not stop. the dealer was contacted but did not provide any assistance. the vehicle was not repaired or diagnosed. the failure and current mileages were 5,800. updated 08/13/10. *lj updated 08/23/10*jb

2010 toyota prius. the consumer stated he experienced two safety issues; loss of brake effectiveness and engine race *tgw when the consumer applied the brakes when going over bumps/rough roads, or in marginal conditions due to snow/ice when approaching a stop sign, he would lose braking effectiveness. the consumer took the vehicle to the dealer for a recall repair on march 24, 2010. however, he continued to experience loss of brake effectiveness. the consumer pulled into a neighbor's driveway after driving less than one mile from his home. after pushing the park button, but before pushing the power button, the engine began to race. it was not at an extreme high rpm and it was not for an extended period time, but it did last for several seconds. after the vehicle went down to normal rpm, after a s second or two, it began all over again. the consumer stated it was not a surge as the vehicle was not in gear at the time. *jb

I received delivery of my newly purchased 2010 prius on 10/17/09. the brakes locked up on several occasions during nov and dec 2009, on rough roads and during slippery conditions. i had the brakes checked 1/2/10 by the toyota dealer; they were unable to duplicate the conditions. on approximately 2/4/10, the brakes failed during an ice storm and the car ended up on someone's front lawn. there were no injuries or property damage, thus the incident was not reported. following this incident, i took the car to the toyota dealer for inspection and received a loaner car. while the dealer had my car, toyota issued a recall for the prius' brakes. the brakes on my prius were reprogrammed 2/9/10. since then i have had four instances where the brakes locked up, the latest of which was 4/21/10. the car is currently at the toyota dealer being inspected. the car was purchased at colonial toyota in milford and all subsequent service has been performed by that dealer. *tr

Toyota 2010 prius brake recall patch was only partly effective. in the winter the car could loose braking for 6 to 8 feet after hitting a rough spot, pot hole etc. now it skips maybe 2 to 3 feet. the dealer and toyota factory people tell me it's normal anti-lock brake action. i say i have driven many cars with anti-lock brakes and they to not loose brake action, they pulse the brakes. the toyota factory people tell me the car is still braking even if it feels like it isn't. i do not agree with that for a second. the dealer wants to test drive the car to determine condition. however it only happens maybe once a week and not at every bump or jolt of the suspension. i feel toyota does not have a proper fix and is not working on one. they are trying to talk us prius owners into accepting this flaw as normal for the car. *tr

Tl*the contact owns a 2010 toyota prius. the contact was driving approximately 40 mph on wet road conditions and encountered a pothole. the brakes were engaged with a delay response period between 5 to 10 seconds. the vehicle was able to slow down and continued to travel. the vehicle had a prior recall repair on march 1, 2010 under the nhtsa campaign id number 10v039000 (service brakes, air: antilock: control unit/module). the remedy repair was insufficient and failed to correct the problem. the manufacturer was notified of the malfunction. the contact was waiting for a response from the manufacturer for resolution. the failure and current mileages were 4,860.

2010 toyota prius. s10 appropriate handling- letter from regarding toyota problems *tgw the consumer stated when he went to start his vehicle, the brake pedal went straight down to the floor and the vehicle would not start until pressure was applied to the brake. after trying several things, the brake finally came on. the consumer took the vehicle to the dealer, but they were unable to find anything wrong. on april 27, 2010, the incident happened again with the brakes. a notice appeared on the dash to put the vehicle in park. when he did, the brake came on. *jb updated 12/22/10.*jb

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 nhtsa 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.

The vehicle was parked and was started. the vehicle was put into reverse and the car then just lurched for a moment. i jammed on the brakes and the brake pedal became very hard and came all the way to the top . i held the brake and then just shut the car off. upon restart the vehicle was ok. it did not replicate the problem again. this is the 4th or 5th time this has happened and it is always the same. the car is parked and i have to put it in reverse. *tr

I have the 2010 prius and had the brake recall work performed on my vehicle. it didn't work. when i go down a hill and hit a speed bump even at 5 miles an hour while braking the car doesn't brake for a few seconds. i move 5-10 feet uncontrolled. if there are cars backed up at the stop i would hit them. *tr

2010 toyota prius. vehicle repair was covered under a recall, but after a no brake incident consumer questions the repair. *gr the consumer stated the recall was performed on april 3, 2010. however, on april 6, 2010 he hit a slight bump as he applied the brakes and had a momentary feeling of having no brakes. the vehicle did stop. however, the instance did lead the consumer to question the adequacy of the fix. *jb

2010 toyota prius. consumer states brake problems. *tgw the consumer stated it appeared as if the software patch for the 2010 prius was not enough as he has experienced one more occurrence since getting the patch on march 1, 2010. prior to the software patch, the consumer experienced brake stuttering may be 10 times. the consumer stated he read where the switch from regenerative to mechanical braking occurred at about 9 mph he noticed that the brake stuttering seemed to occur closer to 20 mph. it would not just occur when hitting a small pothole, but sometimes with just steady braking on smooth surfaces. on a smooth surface, the feeling would be a bit of a jerk. he would decelerate with pressure against the seat belt and his hands on the steering wheel, then there would be 1/4 of a second where there was no pressure because the brakes were not working, then he would jerk forward as the brakes began to work again, there was a somewhat different sensation when hitting a small pothole. the most recent momentary brake failure occurred while stopping for a red light. the consumer stated he slowed down to 20 mph when he felt a different type of stuttering than previously. it may have been a double stuttering, but it seemed harder. *jb

When i pressed the brakes while approaching a stop i hit a bump in the road (large pot hole). the pressure on the brake released for approximately 1 second before the pressure on the brake pad re-engaged. this same scenario can happen any where from 0 to 2 times per week. in the winter when the road surface is not clear it is apparant that when the brake "disengages" the anti-lock doesn't engage because the car slides. i have slide through a red light, onto a busy street. fortunately there have not been cars in the vacinity. i have taken the car to the dealership 3 times for this problem with no solution or recommendation.

Tl* the contact owns a 2010 toyota prius. while driving the vehicle at a speed of 25 mph, the vehicle continued to accelerate even after the brake pedal was applied when driving on a rough or bumpy surface. this incident occurred about forty times since the vehicle was purchased. the vehicle was taken to the dealership on two occasions. on the second visit to the dealership, the dealer updated the computer software in the vehicle. however, the update did not remedy the problem. the current and failure mileages were approximately 11,000.

I have a 2010 toyota prius, and have noticed that while braking on uneven pavement, the car lurches forward. the jack safro dealership said to bring it in, as there was a recall. since they worked on it, i see no change. i called the dealership and told them there was no difference, and they took it for a test drive. the mechanic said he didn't experience any problem. they said they would note the problem, but there was nothing else they could do. i have to be very careful when approaching a stop sign or light on uneven pavement. i fear rear ending someone. or worse hitting a pedestrian. *tr

Tl*the contact owns a 2010 toyota prius. the contact was driving approximately 25 mph on a rough road surface and over a pothole. when the brake pedal was applied, the vehicle surged forward with no power response. the vehicle was taken to the dealer for a recall software repair. the nhtsa campaign id number was unknown. the contact was uncertain of the recall remedy. the failure continued to occur after the recall repair was performed. the brakes were engaged four to five times without a response. the contact was expecting a response from the manufacturer within the next two days. the failure mileage was 11,000.

2010 toyota prius iii abs recall was applied by dealer toyota city of brooklyn park, mn on 3/17/10. prior to this recall update to my car, i had experienced the issue once since purchase of the car on 10/23/09. now since the abs update has been applied, i have experienced the issue 3 times in 5 days. the last experience was today and the worst yet where i felt i lost brakes completely while slowing the car and braking. i estimate my speed was about 15 mph going over a minor pot hole. *dt

Tl* the contact owns a 2010 toyota prius. the contact stated that the vehicle was taken to the dealer for repairs under nhtsa 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.