Bulletins
| Bulletin | Bulletin date | Replacement Bulletin | Item no. | Summary | Added |
|---|---|---|---|---|---|
| POWER TRAIN - AUTOMATIC TRANSMISSION - CONTROL MODULE (TCM, PCM) | |||||
| TSB-0205-11REV-1 | 05/10/2012 | 10044581 | Toyota: to address the condition of diagnostic trouble codes (dtcs) that some vehicles are exhibiting (p0a0f, p3190, and p3191), engine control module/ecm (sae term: powertrain control module/pcm) logic was revised. *pe | 07/17/2012 | |
| SB-0130-10 | 05/13/2010 | 10033747 | Toyota: engine/hybrid system. engine control. some vehicles may exhibit a mil on condition with diagnostic trouble code (dtc) p0456 stored in the engine control module or ecm (sae term:powertrain control module/pcm). *pe | 09/17/2010 | |
Consumer Complaints
| Fail date | miles | occurences | Purchase date |
|---|---|---|---|
| POWER TRAIN | |||
| 03/09/2013 | 33950 | ||
| The incident occurred when i attempted to accelerate onto a two-lane highway. because of a slow and sharp u-turn which precedes the short on-ramp, i disabled the eco mode for better acceleration. when i pressed down on the gas, the car immediately emitted a loud sound, became unresponsive and was unable to gain additional speed. even so, there was no other option but to merge onto the roadway while doing no more than 30 mph. in the meantime, the instrument panel showed a check hybrid system message along with several warning lights. i managed to avoid oncoming traffic (from behind) and safely pulled onto the grass. attempts to restart the vehicle were unsuccessful with the previous message reappearing each time. the car required a tow to the nearest toyota dealer. i received a call from them the next business day, and they explained the cause to be a defective inverter based on the diagnostic code. fortunately, the repair will be covered under toyota's hybrid warranty. it remains to be seen and i am hopeful this repair will fully resolve the issue. | |||
| 03/09/2013 | 61000 | ||
| Rear wheel bearings failed at 61000 miles | |||
| 03/09/2013 | 33950 | ||
| The incident occurred when i attempted to accelerate onto a two-lane highway. because of a slow and sharp u-turn which precedes the short on-ramp, i disabled the eco mode for better acceleration. when i pressed down on the gas, the car immediately emitted a loud sound, became unresponsive and was unable to gain additional speed. even so, there was no other option but to merge onto the roadway while doing no more than 30 mph. in the meantime, the instrument panel showed a check hybrid system message along with several warning lights. i managed to avoid oncoming traffic (from behind) and safely pulled onto the grass. attempts to restart the vehicle were unsuccessful with the previous message reappearing each time. the car required a tow to the nearest toyota dealer. i received a call from them the next business day, and they explained the cause to be a defective inverter based on the diagnostic code. fortunately, the repair will be covered under toyota's hybrid warranty. it remains to be seen and i am hopeful this repair will fully resolve the issue. | |||
| 03/09/2013 | 61000 | ||
| Rear wheel bearings failed at 61000 miles | |||
| 03/09/2013 | 33950 | ||
| The incident occurred when i attempted to accelerate onto a two-lane highway. because of a slow and sharp u-turn which precedes the short on-ramp, i disabled the eco mode for better acceleration. when i pressed down on the gas, the car immediately emitted a loud sound, became unresponsive and was unable to gain additional speed. even so, there was no other option but to merge onto the roadway while doing no more than 30 mph. in the meantime, the instrument panel showed a check hybrid system message along with several warning lights. i managed to avoid oncoming traffic (from behind) and safely pulled onto the grass. attempts to restart the vehicle were unsuccessful with the previous message reappearing each time. the car required a tow to the nearest toyota dealer. i received a call from them the next business day, and they explained the cause to be a defective inverter based on the diagnostic code. fortunately, the repair will be covered under toyota's hybrid warranty. it remains to be seen and i am hopeful this repair will fully resolve the issue. | |||
| 03/09/2013 | 61000 | ||
| Rear wheel bearings failed at 61000 miles | |||
| 10/05/2011 | 50000 | ||
| Tl-the contact owns a 2010 toyota prius. the contact stated that while in reverse with the brakes depressed, the vehicle abnormally lunged backward two feet. the contact took the vehicle to the dealer for numerous diagnostic tests but the dealer could not duplicate the problem. the failure could not be remedied and the contact traded the vehicle for another. the failure mileage was 50,000. the vin was not available. kmj | |||
| 10/05/2011 | 50000 | ||
| Tl-the contact owns a 2010 toyota prius. the contact while in reverse with the foot on the brake the vehicle lunged backwards two feet. the contact took the vehicle to the dealer for numerous diagnostic test but the dealer could not duplicate the problem. since the vehicle could not be remedied the contact traded the vehicle for another. the failure mileage was 50,000. jo vin not available. | |||
| 10/01/2010 | 15000 | ||
| Tl* the contact owns a 2010 toyota prius. while stopped, the contact depressed the power off button to shut the engine off while the vehicle was still in drive. the contact stated the vehicle was designed to automatically go into park when the power off button was pushed. the contact exited the vehicle and the vehicle rolled away, crashing into a pedestrian. the pedestrian was transported to the hospital and sustained a broken tibia and crushed right ankle bone. the manufacturer was not made aware of the failure. the vin was not available. the vehicle was not repaired. the approximate failure mileage was 15,000. | |||
| 09/10/2012 | 28000 | ||
| Tl* the contact owns a 2010 toyota prius. the contact stated that while driving 15 mph, the vehicle started to lose power lunged forward. the contact attempted to apply the brakes however, the brakes were inoperable and caused the contact to crash into another vehicle. the passenger of the second vehicle claimed an injury and was transported to the emergency room. the police were notified and a report was filed. the vehicle was inoperable and was towed to the dealer who had not yet diagnosed the failure. the manufacturer was notified of the failure who advised that the vehicle diagnosis was going to take four to six weeks and offered no additional assistance. the failure and current mileage was 28,000. | |||
| 09/10/2012 | 28000 | ||
| Tl- the contact owns a 2010 toyota prius. the contact stated that while driving 15 mph, the vehicle started to lose power lunged forward. the contact attempted to apply the brakes however, the brakes were inoperable and caused the contact to crash into another vehicle. the passenger of the second vehicle claimed an injury and was transported to the emergency room. the police were notified and a report was filed. the vehicle was inoperable and was towed to the dealer who had not yet diagnosed the failure. the manufacturer was notified of the failure who advised that the vehicle diagnosis was going to take four to six weeks and offered no additional assistance. the failure and current mileage was 28,000. kmj | |||
| 09/10/2012 | 28000 | ||
| Tl- the contact owns a 2010 toyota prius. the contact stated that while driving at 15 mph the vehicle started to lose power and was lounged forward and the brakes were inoperable and caused the vehicle to crash with another vehicle. the passenger of the other vehicle claimed to be injured. the ambulance was notified of the crashed who transported the injured person to the emergency room. the police was notified and a report was available. the vehicle was inoperable and was towed away to the dealer who had diagnosed the failure of the crashed yet. the manufacturer was notified of the failure who stated that the vehicle diagnosed was going to take four to six weeks and offered no additional assistance. the failure and current mileage was 28,000. lg | |||
| 06/24/2010 | 2000 | ||
| I was backing my 2010 prius out of the garage and the vehicle lunged quickly when i let off the brake. when i pressed the brake to stop, it jerked to a stop. i let off the brake again and it took off. this process of lunging and jerking repeated until i backed all the way out of the driveway and put the car into drive. it scared me. i did some research and a lot of other people have experienced similar issues. in fact, there are 27 pages of people with similar problems at the following link http://priuschat.com/forums/gen-iii-2010-prius-main-forum/65875-braking-in-reverse-16.html#post995838 | |||
| 04/27/2010 | 1 | 02/01/2010 | |
| 2010 toyota prius ii issue *gr the consumer stated when the vehicle was in drive and the power button was pressed for additional power to merge on the interstate, or go up a steep hill, there was a brief lag when the gas pedal was pressed and the power was engaged. the lag did not always occur. *jb | |||
| 03/20/2010 | 1120 | 1 | |
| True! gear problem! remember airbus flipping our of control when they came out with fly by wire? the joy stick gear is default to shift into neutral when normal push bring it in to reverse. no way to put it in neutral. i thought the same thing & was in denial until i realize that its impossible to put it into neutral when thing is speeding out of control. don't take it lightly- i did bought a 2010 prius just now & realize - u can't put it - in neutral. i was in denial. also, ventilator fan suddenly accelerates when u try to switch the modes. *dt | |||
| 03/17/2010 | 6905 | ||
| My make: toyota model: prius year: 2010 complaint number: 10311958 summary: my 2010 prius completed its recall service yesterday. today, the car lost power and died while i was driving on to the freeway. i was able to pull over to the side of the freeway and turned it on and off several times until it started. when i called the dealer which is located in thousand oaks, california, i was told by the consumer complaint person that the dealer would not fix the problem unless i was able to recreate the problem with a technician in the car. | |||
| 03/02/2010 | 2000 | 1 | |
| I may be able to help with your toyota gas pedal problem. i rented a prius out in utah a couple of weeks ago. while traveling through the mountains, the car seemingly accelerated uncontrollably. i am a mechanical engineer by trade and a habitual gearhead. i also did not buy the accelerator sticking problem, so i began investigating the incident on my own. the second time it happened, i was traveling up the side of a mountain in a neighborhood. the car suddenly lurched forward. the problem is actually quite simple. the cruise control is attached to the steering wheel and moves with the wheel. if the cruise is activated, sometimes in a turn it is possible to bump the cruise lever and resume or accelerate. don't believe me - sit in one and look for yourself. need more proof, have a 6'2 person drive the car and position the wheel between his/her legs. i bet you agree! [xxx] *tr | |||
| 03/02/2010 | 320 | 1 | |
| Having noticed an apparent braking lag on several occasion with our 2010 prius on tuesday 02 of 2010 i was coming up to a stop sign about a mile from our home on a country road. i started stopping quit some distance from the corner stop sign and observing the dash display showing the power usage of the prius to try and get a indication of how many seconds of lag between the regenerated braking before the electric hydraulic brakes i could expect. while watching the display, with my right foot on the brake while applying light braking pressure to the brake pedal only i noticed that when the display showed regenerating braking stopped. i was doing less then 10 mile per hour approximately i experienced a loss of braking as before but also noticed that the display now showed power being applied from the battery to the electric drive motor and to the drive wheels. i push hard on the brakes and the car came to a stop in time the display showed when i applied the brake hard that the power stopped being delivered to the wheels this time and after stopping the display showed the drive wheels stopped rotation as usual. this road was not bump and relatively smooth the full length of the road having been resurfaced several years ago. i think there may be another problem other then the one being reported as brake lag by the company. it also seems to be interment when it hits and duration of loss of braking. i hope this may shed some light on what there problem is. *tr | |||
| 01/19/2010 | 1110 | 1 | |
| At 08:00 while parked & in ready mode my prius v-at shifter would not physically move out of park. *tr | |||
| 02/25/2010 | 6703 | 1 | |
| During the first 5 minutes of operation in the morning the car rpm increases and the speed of the car increases. at first i thought i had my foot on the accelerator but after several mornings of recreating the event my foot was not near the pedal. both drivers of the car experienced the same event. *tr | |||
| 10/01/2009 | 1000 | 1 | |
| I have 2010 prius. i am experiencing an energy surge from my back wheels when i step on my brakes while simultaneously going over a bumpy surface like rail road tracks, pot hole or rough ground. it occurs several times a week. the result is that my car suddenly speeds forward when i least want it to - i am braking. i have it thrust me into an intersection. i reported it to my service dept in nov 09. they told me they had never heard of this problem before and had no other complaints. with a front wheel drive i didn't understand why the power seemed to be coming from the back wheels. now i am assuming it is some kind of connection to the abs system. this happens most notably at lower speeds, rounding a corner. but i think it may also be happening on the highway, but the surge is harder to detect at higher speed. *tr | |||
| 08/14/2009 | 1000 | 3 | |
| Between august and october 2009 i experienced three incidents of sudden acceleration by the vehicle in low speed city driving, 25 -30 mph. these events were always preceded by bump or irregular surface on dry asphalt or concrete surfaces. in each event i had to apply the brakes to counter the sudden and unexpected acceleration. i have not experienced any further incidents with the advent of colder weather and winter driving conditions. current mileage is 7,707. *tr | |||
| 02/11/2010 | 87 | 1 | |
| We bought our toyota prius, 2010 in end of january. it has been nothing but a great car for the most part. but three days ago, february 11 as we were turning into the parking lot of a blockbuster (which is somewhat lower than the street level) we had a stark and unusual incident. as i was turning right and pushing the break pedal as soon as the car got with its right front wheel over the ridge the car sped up and leaped forward as if i did not use the breaks. the car launched good three or four yards forward before it slowed down again. if we had anybody/anything within that distance we would have had an accident. i am not jumping on the band wagon of toyota recent problems and in fact have owned before this card prius 2006 model and was happy with that car. but this incident have really scared us raising question what should we do to insure it does not happen again. can we return the car or change it to another model? *tr | |||
| 02/01/2010 | 3600 | 1 | |
| When slowing down, such as to make a turn or to change to reverse, when the brake was applied, there was some acceleration also occurring. this has happened 4-5 times in past few months, the last time was about 7 or ten days ago. the car did brake with no further problem and no harm occurred and there was no damage. *tr | |||
| 11/10/2009 | 200 | 1 | |
| Occasionally when backing out of the garage the car lurches backward, and then slightly depressing the brakes causes the car to immediately stop. releasing the brakes causes the car to again lurch backwards and then slightly pressing on the brakes again causes the car to immediately stop. it's a whiplash type movement. it occurs sporadically. my solution has been to shut the car off and start over (basically, rebooting the car). i purchased the car at the end of october 2009. *tr | |||
| 06/01/2009 | 10 | 1 | |
| Every time my 2010 prius goes over a dip in the road while braking, the car seems to accelerate or lunge forward. it has happened since i purchased the car in may 2009. i have not asked the dealership about the issue. *tr | |||
| 12/04/2009 | 7954 | 1 | |
| I own a 2010 prius with approximately 8,400 miles on it. i have only recently began to experience problems that have been reported before by others. when driving over some extremely rough spots, the car accelerates by itself. it feels like the brake pedal becomes an accelerator. my experience is that it only lasts about 2 or 3 seconds but is very obvious. also, i would like to say that i have owned a sienna, camry, avalon and a 2005 prius prior to purchasing my present 2010 prius. this 2010 prius has more squeaks, rattles and stress noises than all of my other toyota products combined. for the last 13 years, i have driven only toyota's ., but have become disillusioned with this car. the road noise is excessive and the mpg shown on the display shows 2-3 mpg more than actual mpg. if i could trade this car in for near the amount i paid for it. i would do it tomorrow. though it is only my opinion, i feel that the quality of toyota products has decreased dramatically during recent years. this is also supported by the excessive number of recalls during recent years. *tr | |||
| 09/01/2009 | 1 | ||
| 2010 toyota prius with 2500 miles. since purchased on 8/2009, i had more than ten experiences of unexpected acceleration (sudden unintended acceleration) on reverse that feel like two or three time (stronger) faster than normal reverse. accompany the higher speed reverse, a heavy, abrupt braking with a slight touch of the brake during this event. the big jerk (braking) rock the entire car and banged heads again the headrests.this only happened with electric mode and most time with the car parked a slight incline. this unintended acceleration sometime happen a few time a day or it can go two, three weeks without any problem. the dealer can not find anything wrong with my car. and toyota have no information about this problem. however, if you go to priuschat forum under gen iii 2010 prius main forum-braking in reverse, there are many people with the same problems. i strongly believe this is very dangerous if a new driver get in my car and not know about it. there is one post in priuschat forum that best explain the problem: just yesterday, my prius-iii backed up with sudden unintended acceleration, with my foot only on the brake pedal.... i recognized what was happening because it happened once before, just over 2 months ago. just a few days after i got the car. when i was backing out of an inclined driveway... i suspect that some unusual element of the timing of turning the car on and shifting into reverse, and possibly the internal state of the computer and the hybrid power system combine to produce this abrupt reverse acceleration as i am gently easing off my foot pressure on the brake pedal... the abrupt braking effect does occur, but only in response to the much more dangerous unexpected, unintended reverse power (acceleration), to stop the car motion. no matter how gently the brake is eased further on to stop, the stop is abrupt by garygid orange county, ca. i am trying to work with toyota on this issue. thank you. *tr | |||
| 09/16/2009 | 1000 | 1 | |
| On three occasions, while driving on clean, dry road surfaces, my 2010 prius suddenly and briefly accelerated without any warning after i drove over minor bumps and, one 1 occasion, a manhole cover, while braking. the sensation was that of the engine suddenly surging and accelerating. i was fortunately able to apply harder pressure to the brake pedal, regained control of the vehicle and avoided crashing into the car in front of me. i spoke with a toyota field technical specialist today who told me that the mechanics of the car are such that if a wheel hits a bump or moves onto a surface that causes it to rotate at a different rate versus the other wheels, the car thinks it is going into a skid, and the abs system kicks in. also, the system that generates energy to recharge the battery, which also effectively brakes the car, suddenly ceases to operate. consequently, you have the sensation of acceleration when in fact, according to the toyota specialist, the car stopped decelerating. nonetheless, this sudden deceleration is unexpected, and if i was not focused at those exact moments and failed to immediately apply significant pressure to the brake pedal, i could have easily crashed into an object, or car, or person, in front of me. i do not feel safe in this car, and am worried that my wife or son could have a major problem responding to this sudden lack of control. there is great potential for serious injury or death from this type of incident. my car is about 1 month old, with 1,250 miles on it. i understand from the specialist that toyota dealerships on long island have had at least one other similar complaint. *tr | |||
| POWER TRAIN - AUTOMATIC TRANSMISSION | |||
| 06/08/2011 | 3000 | ||
| Exiting from a parking garage. after passing through the pay line, i headed down the exit ramp toward the street. the vehicle refused to accelerate as i pushed on the accelerator. . it did very slowly accelerate to 11 mph and then started to decelerate. i stopped the car on the ramp, turned the engine off and restarted it. after that, everything was fine, and i was able to drive home. . if this had happened while i was trying to merge into traffic. it would have been hazardous. | |||
| 02/20/2011 | 3500 | ||
| On the day prior to the event, the weather was around 55 degrees and misty with occasional light rain. our 2010 toyota prius iv was parked during most of the day. while driving on interstate 35 in texas going 70 mph, all of a sudden 4 different warning lights illuminated on the dash along with the large rectangular warning message saying check hybrid system. the vehicle lost power to the wheels, the accelerator did not work even though the gasoline engine was still running, the vehicle coasted to the shoulder where it was immobile and had to be towed to the nearest toyota dealership. this was the first time we had any trouble with the vehicle. the odometer reading was ~3,500 miles. the dtc code was dtc p0a3f drive motor a position sensor circuit. the dealer initially replaced the entire inverter assembly, which did not correct the problem. then they replaced the entire transaxle for the vehicle. this corrected the problem. i do not have either of the parts that were replaced, although i am sure toyota does have the parts. | |||
| 01/04/2011 | 11500 | ||
| I have a 2010 toyota prius version 3. when i push the dash button to put the vehicle in park, the car sometimes will roll 1-2 inches forward before engaging in park. the dealer was able to duplicate the problem on 01/04/2011, but stated that this was normal because when engaging the vehicle may not have been in the right position for go righ into park vs. needing to move a little bit so it engages properly. | |||
| 05/07/2010 | 8000 | ||
| 2010 prius ii, purchased late july 2009. in november of 2009 the car refused to stay in d when attempting to pull out of a parking space. after turning the system off and sitting for about 30 minutes the car operated normally. the same thing happened again that afternoon. a few days ago my wife was preparing to cross a 4-lane highway when the car popped into n from the d position. after several reboots the vehicle would still not stay in d. then my wife held the joystick in the d position and was able to drive it back to our house (about 1 mile). an hour later the car operated normally. | |||
| 03/05/2010 | 800 | 1 | |
| Purchased 2010 prius on aug ll,09. have returned to dealer 5 times, beginning on sept.29, 09, to report same problem...which is that at random times when i shift from p to either d or r, the vehicle lunges and when i apply the brake, it is like hitting a brick wall. this process is repeated several times in sequence...lunge, brake, lunge, brake..then it corrects itself and drives normally. i cannot predict when this will occur, sometimes it is weeks and hundreds of miles between occurrences; sometimes only a few miles and hours between incidents. the dealer always says they have not been able to reproduce the problem, therefore no diagnosis or repair. i have reported to toyota customer ser. and was assigned a case #. have had ongoing conversation with tcs rep to report this and several other problems, i.e. various warning lights at inappropriate times...key detected in vehicle while driving down the road... etc. am always told scan shows no problems. i think there is a problem with electronics. unsafe, frightening. latest incident on 3/05/10. dealer installed software fix for brake recall on 2/10/10. at times must repeatedly move gear shift lever before it responds. *tr | |||
| 08/20/2009 | 1000 | 1 | |
| Seems to not always catch when i put it in park. had one incident in which car rolled as i got out of it and i believe i did indeed push the park button. have had several other incidents in which i know i pushed the park button and the car began to roll until i pushed the button again. *tr | |||
| 02/16/2010 | 8000 | 1 | |
| I brought my 2010 prius in on 2/5/10 for the service work relating to the recent recall. today, the problem recurred; however, this time, my car slipped while i was driving (but not braking) as i was turning west onto congress from northbound columbus. the road surface there is uneven. previously, this situation occurred only while braking on an uneven road surface. this time, i put on brakes prior to entering the turn; i was not braking at the time the car slipped. the car did not surge, but i did feel momentarily like i had lost control of it. *tr | |||
| 02/05/2010 | 8000 | 1 | |
| I brought my 2010 prius in on 2/5/10 for the service work relating to the recent recall. on the way home, the problem recurred; however, this time, my car slipped while i was driving (but not braking) on illinois east of michigan, where there is a metal plate on the road. previously, this situation occurred only while braking on an even road surface. this time, i was not braking. the car did not surge, but i did feel momentarily like i had lost control of it. *tr | |||
| 10/15/2009 | 150 | 1 | |
| My 2010 toyota prius does not always recognize the key and will not open doors and not start the vehicle. the gear shift jumps out of gear going from reverse to drive and vice versa. the heater does not work properly. i am afraid to drive my newly purchased vehicle. please advise. *tr | |||
| 11/10/2009 | 500 | 4 | |
| I have a 2010 toyota prius, v model, delivered in october 2009. the incident is after parking the car for about 10 minutes, then restarting, and putting the car in reverse... upon backing out the car will surge and i have to press the brake hard to stop the car, at which time the car attempts to speed up and i have to maintain hard pressure on the brake to stop the car. this has happened to the car about 4 times starting in november 2009. *tw | |||
| 01/31/2010 | 2500 | 1 | |
| I have a new 2010 toyota prius, purchased 15 jan. 2010. i have since put 3,292 miles on the vehicle on a trip from washington to california and back, during which conditions from mountains, snow and ice, and dry freeway conditions were encountered. the random problem occurred several times when using the brake pedal to disconnect the cruise control to slow down. the problem is most pronounced when the power applied to the vehicle is increasing to maintain selected cruise control speed. when the brake is applied in these situations, the vehicle tries to accelerate for a second or so, giving the driver the feeling of not being in control. the problem is most pronounced when climbing a steep (6% to 8%) grade. in those cases (2 to 3 times) the power surge was pronounced and seemed to last for 2 to 3 seconds with the smell of burning brakes after the acceleration ended. on the freeway, while the problem is less severe, the driver is left with an uncomfortable situation if coming up on a slower moving vehicle as your vehicle continues to gain on the vehicle ahead even though you are trying to slow down. these incidents occurred over a period of three weeks, so the date below is not accurate. *tr | |||
| 02/03/2010 | 1087 | 1 | |
| I was driving 2010 prius type iii on downhill. because it was downhill, i released gas and prepared to push brake. the road was slightly turned to right side and the surface was a little bumpy. when the car passed the bumpy surface, it suddenly accelerated even though i did not push gas. as the result, i pushed the brake and fortunately the car stopped. however, i definitely felt the car was accelerated suddenly at high speed(i do not know how much it was accelerated). *tr | |||
| 12/15/2009 | 4000 | 1 | |
| Sudden acceleration loss of braking while driving over bumpy road at slow speed. this has happened several times. no accident resulted. having read reports of this in the news, i wanted to report it as well. *tr | |||
| 11/09/2009 | 9600 | 1 | |
| My 2010 toyota prius seems to have brief periods of acceleration when i take my foot off the accelerator and am just putting it on the brake. i have to brake hard to keep it from lurching forward. *tr | |||
| 02/02/2010 | 1 | ||
| I am also an owner of a 2010 prius. i have driven this car since august 2010. when you go over a bump when braking there is a sudden burst of acceleration. it absolutely happens and is reproducible. i go over the same bump every day on my commute home, and this happens repeatedly. it has never caused an accident, but it is a defect and is disconcerting. given the other acceleration problems toyotas have experienced, this needs to be investigated. *tr | |||
| 01/24/2010 | 10000 | 1 | |
| I have a 2010 prius and saw an article about there being possible brake problems with the model. i have had this problem probably about 6 times since i got the car last july and, when i mentioned it to the dealer, they said there wasn't anything wrong with the brakes when they ran the diagnostic. when it happens, i'm in the process of braking, and there's a push, almost like the brakes didn't take, followed by a loss of steering for a second or two. it's also happened to my husband one time. there doesn't seem to be any rhyme or reason as to when it happens (wet road vs. dry road, turning or going straight, flat or hill). i originally associated the problem with the brakes because i also have the sliding icon come on the dashboard when i'm completely stopped and lean forward in my seatbelt. however, i'm now wondering if it's not the brakes, but the transmission, since it sort of feels like it's not downshifting when it's supposed to, or it shifts back into a higher gear for a second while braking. i came to this conclusion after waiting in the car while it was running. with the car on, emergency brake on, but not in park, there was a definite jolt when the gas engine would turn on and then off again a few minutes later. although there hasn't been a crash yet, there were two times when it came really close to that, as i was turning and almost hit the cars on the side street that were in the left turn lane waiting to turn onto the street i had been traveling on. *tr | |||
| 01/23/2010 | 15300 | 1 | |
| While braking at a speed of about 25 mph, wheels hit a pothole and the car seemed to accelerate and lurch forward for a fraction of a second before braking resumed. *tr | |||
| POWER TRAIN - DRIVELINE | |||
| 06/22/2011 | 3000 | ||
| Second occurrence of this problem iin three weeks. driving downhill on a residential street at 25 mph, slowing to a stop without applying the accelerator. suddenly lost engine power. applied accelerator, no response. continued to lose speed as i rolled silently downhilll toward the intersection. applied brakes and stopped. restarted the engine and it started up fine. the previous incident also occurred on a downhilll grade, on an exit ramp from an parking garage. fortunately both incidents happened at low speed and not in heavy traffic. i previously reported the first incident. toyota dealer checked vehicle after each incident and could not replicate the incident or find a computer code that would explain it. since this was the second occurrence and was familiar to me, and since i was not in traffic, i let it happen while observing my own actions, trying to check for driver error. my foot was not on the brake.the car was in drive. while the car was slowing, i tried pressing the accelerator deeply and then pumping the accelerator to see what would happen.. there was no response, and no sound. the same was true three weeks ago-no response to pushing the accelerator, eveb deeply, and no sound. three weeks ago, the first time it happened, i also tried cyclying through the modes (ev, prius, eco, power) with no effect. each time, i hit the power button to power off, and then i hit it again to restart. powering off and then restarting, both times, seemed like rebooting a computer. fortunately traffic conditions both times gave me ample time to reboot. will this happen again? | |||
| 11/01/2009 | 500 | ||
| 2010 prius accelerates while braking and surges in acceleration from a stop while accelerating slowly. many but not all occasions were while going over bumps and/or wet road. this has happened several times since owning the car. toyota cannot duplicate the problem in the testing and denies that it is real. it has been brought into toyota for repairs but the problem persists. the car is now parked and we will not drive it as it is not safe. we filed a lemon law claim (ca) and toyota has denied the claim with a form type letter. | |||
| 01/15/2010 | 3000 | 6 | |
| My 2010 toyota prius will sometimes jump forward or backwards when you put it in drive or reverse. this only happens for a split second. concerns me if it is safe. it has done it 5 or 6 times. *tr | |||