Brake Master Cylinder problems of the 2010 Toyota Prius

Please read the attached file "prius complaint signed" for a full description. I am the owner of a 2010 Toyota Prius, 2zr-fxe. The warning light came up on my dashboard of my vehicle, so I took my 2010 Prius to autozone, to get a free diagnostic. The diagnostic indicated the problem code of “c1256” “accumulator low pressure” for the “anti-lock brake system. ” see ex. A (autozone diagnostic). It is available for inspection. According to the safety recall number “d0h”, 2010 Prius model “2zr-fxe” has a “brake booster pump assembly which can develop a crack inside the accumulator housing. If this occurs nitrogen gas could leak into the brake fluid and gradually cause a loss of power assist. Under certain circumstances, this could affect stopping distance and increase the risk of a crash. ” (emphasis added). I have noticed that when I brake hard, it takes longer to come to a stop, which threatens not only my life, but the lives of my wife and two [xxx] daughters who also ride in this vehicle. According to the safety recall, “Toyota dealers will perform an inspection and, if necessary, replace the brake booster pump assembly at no charge to the vehicle owner . . . ” see id. The safety recall does not explicitly permit dealers or servicers to charge for an inspection with regards to this defect, according to the information provided me. The estimate, provided by darcars recommending replacement of the “brake booster with master cylinder with pump[,]” confirms that the issue appears to be that which is covered by the safety recall. Ex. F. ; see also exhibit b safety recall (the vehicle has a “brake booster pump assembly which can develop a crack inside the accumulator housing . . . ”). See also exhibit e error code from darcars (“c1256 accumulator low pressure”). Nevertheless, darcars refused to waive the diagnostic fee of $150 and would not repair the vehicle unless I paid them “$5,150. ” see exhibit f. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Brakes started making a hissing sound a couple of weeks ago. Yesterday evening when I was driving on freeway , I got an assortment of lights on my dash while driving . Abs was instantly disabled and it was significantly harder to brake the car. Brake light on dashboard came on. Traction control light came on . It was very dangerous and it was mere luck that there was no car in the front - otherwise I could have crashed. Pulled over to the side on the freeway and then came in internal roads to my destination , keeping a lot of braking distance and at slow speed. Turns out this is the infamous brake booster leak that was so bad Toyota was forced to create an extended warranty program on gen 3 to fix it. Brought it to dealer next day. Got an estimate for $4000 for "replace brake booster and master cylinder(due to internal leak)".

Tl the contact owns a 2010 Toyota Prius. The contact stated that while depressing the brake pedal, the brake pedal was firm causing the braking distance to be extended. The vehicle was taken to Toyota of Lincoln park located at 1561 n fremont st, chicago, IL 60642 who diagnosed the vehicle and determined that the brake booster and master cylinder were defective and needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure but offered no assistance. The failure mileage was 100,000. The VIN was not available.

I experienced a significant loss of brake performance accompanied by many warning lights on the dashboard, including one that indicated a problem with the abs brake system in my 2010 Prius. Upon immediately taking the car to the dealership, I was told that Toyota extended a warranty program (zjb & zkk) for the source of the problem abs brake actuator/master cylinder failure, but that I was not eligible for the warranty coverage because the deadline had expired. My car was under 150,000 miles, as required by the warranty, and displayed the correct failure code as required by the warranty. But, since my car did not experience the problem or display an error code before the end of February 2020, I was told that I was ineligible. I was informed that I would have to pay over $4100 for a repair through the dealership, buy a new car or take my chances and drive the car 'as is' until I could find a cheaper solution. The cheaper solution would be to find another abs unit at a salvage yard, and have a non-Toyota certified mechanic install it. There is nothing to indicate a salvage yard unit will not simply fail again. I was well within the 150,000 mile limit of the warranty. So, I am to accept responsibility for the repair of a part that Toyota admits is faulty, and would have replaced if the problem would have surfaced a mere six months earlier? I believe Toyota's warranty extension to be a meager attempt at appeasing the NHTSA and other authorities so they do not have to launch a full scale recall. They are endangering the lives of hundreds of thousands of people who depend on these cars on a daily basis, as they should not ask their customers to experience a major brake failure before the manufacturer will agree to fix a known problem (or not fix it, rather, as the time limit has expired). Toyota is putting profits ahead of safety, during a pandemic. I the NHTSA to help us.

I brought my Toyota Prius to Toyota dealer as abs alert was on and I lost controlling the brake. Toyota dealer gave me an estimate for repair at $2,850. 00 ( p1391 abnormal leak in accumulator pump rec master cylinder with brake booster and brake booster pimp assembly) due warranty enhancement expired 05. 09. 2020 or 150,000,miles. I've got abs alert in the beginning of may'20, however, due to covid-19 stay-home order, I had to stay home and wan't able to bring my car until end of may, . 2020. I was advised by Toyota dealership to contact Toyota customer relation as they may consider to extend the warranty, so I contacted Toyota customer relation( actually I was transferred to financial department) and they denied to extend the warranty, and they repeated as " warranty is warranty" . I was very disappointed with Toyota's unkind decision and service under covid-19 situation. I read toyoya 2010 has problems of brake issues, so I want Toyota take a responsibility to fix my brake problem.

My abs system started showing signs of problems, and I started getting codes for all sorts of brake-related issues. My brakes ended up locking up and not working, and my battery in my car died because it was the brake system was not able to recharge my battery. Even though I started having issues with it in February, apparently Toyota said that because I had a 2010 Prius, that since November 31, 2019 had passed, the recall/extended warranty "ran out" on it. Even though this is a problem that obviously wasn't fixed in the first place. So when I took it to the dealership to get a diagnostics ran on it, they said that they needed $3,200 to fix the vehicle. This included both the purchasing and installation of a new brake booster/master cylinder assem and an abs pump motor assem. I obviously do not have the money for the repair and they are telling me to go kick rocks. This is not right and because of the brake issue not being fixed in the first place, it then allowed my battery (which runs around $1,500) to get completely drained and prevented it from being properly recharged by the brake system.

Started car one morning, immediately noticed the �abs�, �brake�, and �traction control� warning lights were on simultaneously. Took the car for a drive around the corner, and immediately noticed brakes were very soft and unresponsive. Pedal literally sinks to the floor while air can be heard leaking from the system/pedal. . Also noticed the brakes no longer recharge the system, and they also feel jerky at times. I checked the brake fluid reservoir, and noticed fluid was halfway between max and low. Perhaps a leak somewhere in the system? I contacted my local Toyota dealer and will have them take a look at it on 05/10/2019 according to some research I conducted, this is a known issue in the 2010/2011 models. Supposedly, over time, vibrations can actually crack the line(s) feeding into the brake master cylinder, and thus resulting in this fault. Toyota should definitely be more communicative about these issues. I have owned this car for 4 years, and have never heard of this before. Currently not driving the car at the moment, as I do not feel safe.

Tl the contact owns a 2010 Toyota Prius. While the brakes were engaged and the vehicle was stationary, a loud abnormal noise was heard from under the hood. The vehicle was taken to germain Toyota of naples (13315 tamiami trail n, naples, FL 34110, (888) 722-4942) where the contact was informed that the master cylinder needed to be replaced and the linear off set value needed to be re-learned. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was 111,399.

Serious brake issues! failure of brake booster and master cylinder causing impaired braking lending to safety issues. Many insiders at Toyota know the 2010 Prius brake issues exist and question why it is not handled at the corporate level. Brakes are spongy and additional pressure must be applied. The abs is inoperable because of the problem. Please hold Toyota accountable for this chronic issue. The safety of all involved is affected due to inconsistent braking. My dealership asked corporate Toyota to address and they refused.

I drive a Toyota Prius 2010, I was driving when my brake, abs, and traction control light came on at once. When I tried to apply the brake it would take a lot of force for my car to stop. I went to the Toyota dealership to get it checked out and they said part number c1391 has to be replaced. Tech found abnormal leak in accumulator. The accumulator pump assembly needs to be replaced. Which would cost me 2,000 dollars parts and labor. They also told me they might find out that the master cylinder might have to be replaced as well if damaged. Which would be 3,300 dollars. So worst case scenario it would be over 5,000 with tax to fix my car. I noticed other 2010 Prius models were recalled for the exact issue but only certain VIN numbers. My VIN number wasn't included. I feel like it should be if many other people are complaining about the same issue with this car. I can't afford over 2,000 in repairs let alone 5,000.

I was driving on the freeway. All of a sudden brake, abs and suction traction light turned on. After that I have to push my brake harder to slow down the vehicle. I was able to drive it back home safely. I took it to the dealer who said I need to replace brake master cylinder with brake booster. Doing research I found many owners of the same model car have same problem and some of the cars are recalled but not all. I believe most of 2010 Toyota Prius car have issues with brake system which is bad for our safety. It can cause serious harm for our safety. I request your good department to investigate the braking issues for 2010 Toyota Prius vehicle. As a good citizen of the country, I felt I need to discuss this issue with you.

(np missing dealer) tl the contact owns a 2010 Toyota Prius. While the contact's wife was driving 35 mph, the abs, traction control, and brake warning indicators illuminated. The driver had to apply extra pressure to the brake pedal to slow down the vehicle. The vehicle was taken to an independent mechanic who diagnosed that the brake booster and master cylinder failed and needed to be replaced. The vehicle was repaired. The manufacturer was made aware of the failure and stated that the vehicle was not within the VIN range. The approximate failure mileage was 95,000.

Hello. I recently started to experience an issue with my vehicle. My brakes started to make some kind of unusual noises every time I press on them. I've never had that before and I service my car pretty often. I went to authorized Toyota dealership and they told me there was a computer issue and they fixed it for $110. It continued to make noises and all of the sudden it began showing abs/brake/vsc lights on my car dashboard either while I was driving or being in the ¿park¿ mode. At the same time my brakes stopped working well while driving when the abs/brake/vsc lights were on. I checked the code of the error through the car computer and it showed me ¿c1391¿. I went to the dealership again and they did another check and this time they found that brake master cylinder/booster/abs assembly needs to be replaced with $3,170 price. I attached here the paper that my Toyota prime dealership located here in saco, me gave me. I¿ve been reading a lot about it online and people with the same type of hybrid vehicles have experienced it. I think Toyota needs to look into the issue and acknowledge that it is a common problem in their hybrid vehicles. I service my car all the time, I do oil change and check all the systems very thoroughly, so I don¿t understand why we, consumers, have to pay that big of a price for the car repair. I hope you can look into the issue and help me (and to all other car owners) to resolve this kind of issue. Thank you.

Brake system failure while driving on suburban street. Master cylinder, assembly and booster replacement. All corresponding warning came on. Was able to drive to dealer. This is the exact problem that incited the recall for nitrogen leaking into the brake system in some Prius made in 2010 (82,000). Cost of $3200. Incidentally, brake fluid was flushed and changed at 60,000 and then again at 75,000. The reason, stated from the dealer is that maintenance was responsible for the failure. Priority Toyota of springfield was the only one during the maintenance and I followed their recommended advice for the 2 brake fluid flushes and replacement.

I have driven people for a living for over 30 years. I bought a Prius because of fuel costs. A month ago while transporting passengers, my power brakes go out and my dash lights up with abs,brake, & traction control warning lights. I take it to the Toyota dealer who charges me $111 to tell me I have a brake problem and that it will cost $4418 to fix it. Code # c1391; they recommend replacing the master cylinder; and booster pump assembly saying there is an abnormal leak down of the brake accumulator. This is insane. I cannot afford to fix it and must continue to work to live; therefore driving about 200 miles/day with hydraulic only brakes. My research indicates there was a major recall for this exact problem on the 2010 model. The dealership and Toyota corporate both say my vehicle was not part of the recall. I feel as though it should be since, obviously, the problem has not been solved. I am not alone, as many owners on Priuschat have the same problem. This is a major safety concern to not only myself, other vehicles or pedestrians, but also my passengers. An expanded recall is necessary and warranted. Anything you can do will help and make us all safer. .

Abs actuator with master cylinder assembly has internal leak. Assembly doesn't hold pressure and actuator motor continiously working in order to create the pressure. Due to this problem brakes are not operate as properly. It takes more strength to put on the pedal to stop vehicle. I also noticed that during emergency braking not all wheels were involved equally. Due to this problem braking distance significantly increased. I have 3 instrument cluster error lights turned on due to this problem: "brake", light with vehicle on sleepy road, and light with "!" sign. I found that there already was recall for same 2010 year Toyota Prius under tms-ntc-13178 of July 23, 2013, Toyota recall name d0h, but my vehicle is not covered. I kindly ask you to investigate if my car eligible to participate in this recall campaign, since seemsthat this car were assembled with same unreliable parts.

My car at 139,500 miles driving straight on a main road at 45 mph had three lights come on, red 'brake' light, yellow 'abs' light and the yellow 'tcs' light. Earl stewart Toyota diagnosed problem as brake actuator needs to be replaced at a cost of labor/parts of 2,100$. I was able to financially afford the repair so I told them to perform the repair. Less than two days later, driving normally on a main road, the same three warnings appeared, and of course upset me greatly. Toyota this time diagnosed the problem this time as the brake booster needs to be replaced. Another dealer said the brake master cylinder needed to be replaced. I am in talks with the dealer to figure out how to proceed.

Loss of brake pressure, with insufficient breaking to hold at a stop while in drive. Warning lights for brake system, abs, electronic brake system (yellow exclamation point in a circle), and traction control. Diagnosed by brown Toyota in charlottesville va as faulty brake booster, accumulator, and master cylinder. Brown Toyota said it was a recurring problem they have encountered and they have been in contact with Toyota headquarters about it. Estimate was $5800. Toyota customer service was contacted. Was told it is not one of the 2010 cars covered by the recall despite being the same failure and no compensation was offered.

The Toyota dealer diagnosed a brake master cylinder and booster failure on our 2010 Prius at 27892 miles. Toyota declined to extend the brake recall that covered 2010 cars with a production date before November 2009. Our car has a March 2010 production date. Clearly Toyota was assembling cars with faulty brake master cylinders and boosters and they should extend the recall to cover those cars. The cost of the repair was $2760.

The contact owns a 2010 Toyota Prius. The contact stated that while driving down a hill at approximately 20 mph, the brake pedal was depressed and the brakes failed to respond without warning. The vehicle was towed to the dealer, who diagnosed that the brake booster pump leaked nitrogen into the master cylinder brake booster assembly that caused the failure. The vehicle was not repaired. The manufacturer was notified of the failure and informed that the VIN was not included in NHTSA campaign: 13v235000 (service brakes). The approximate failure mileage was 148,000.

The contact owns a 2010 Toyota Prius. The contact stated that while driving 35 mph, the contact applied the brakes then the pedal went to the floor and the vehicle failed to stop. The contact pumped the pedal and eventually the vehicle stopped. The vehicle was taken to a dealer where the contact was informed that the brakes needed to be replaced. Several days later the failure recurred. The vehicle was returned to the dealer and the contact was informed that the master cylinder and the brake booster would need to be replaced. The vehicle was repaired. The manufacturer had not been notified of the failure. The failure and current mileage was 144,000.

Brakes failed while driving. Pedal went to the floor. Very little braking power left. Luckily I didn't have to stop suddenly and was able to bring the car to a stop slowly. Had the car towed to Toyota dealer where they diagnosed the problem as the brake booster / master cylinder. They told me there was air in the brake system. I received a quote for almost $2900 to fix the brakes. I called Toyota corporate office and asked for assistance with this catastrophic brake failure but was refused. Searching online found others with same failure. In particular, there was a person with 43k miles with exact same issue, and Toyota refused to help him. This is a very dangerous failure and should be a recall. Please investigate fully and feel free to contact me for any assistance. I am in the process of replacing the brake booster but I will keep the old one in case you need it for your investigation. I had similar issue on my 2004 Lexus rx330 and there was eventually a recall for it. It is unacceptable for a 3 year old car to have this kind of a safety failure. My wife and kids could have been seriously hurt or killed.

On 01 may 2013, I was driving my two daughters home from school and the brakes on my 2010 Toyota Prius failed. The brake pedal became very stiff and the brakes did not respond. I began to panic because we were traveling down a steep hill. I continued to pump the brakes and suddenly, the pedal gave way and the car came to a screeching halt. I was luckily within walking distance of my house. I had my car towed to the dealership and they informed me that my brake booster and master cylinder needed replacement at a cost of $5500. I'm shocked. My car is 3 years old. After research, I discovered this is a common problem for the 2010 Prius. What I find most disturbing is this is clearly a manufacturer's defect, that is an extremely dangerous safety hazard. Prior to owning my Prius, I was a loyal Toyota buyer. I have had consistent acceleration issues with my brakes, even after the recall. If Toyota does not address this issue, I don't intend to purchase another Toyota product.

First incident: April 15, 2013 I lost my breaks while I was driving home from my night shift work as a registered nurse. I was at an intersection two blocks from my house when I felt the break was failing. It was a good thing that I was driving slow to make a turn when I felt the break system was not working. I was able to steer it to a parking lot nearby by using the foot break. Prior to this incident, I heard squeaking noises for about three days whenever I step on the breaks. I was relieved that I did not get into an accident. Action after the 1st incident: April 24, 2010. We towed the car to dch Toyota freehold, and it took about 5 days to repair the breaks so they gave us a loaner car which we truly appreciate. But when we picked up the car, the breaks were fixed but the squeaking noise is still present, and our windshield was cracked. We called the dealership right away to inform them about the squeaking noise and to complain about the cracked windshield. I was told by the service representative that their technicians tested my car and deemed it safe to drive and that they would never release my car unless they know it is safe to be on the road. Second incident: April 29, 2013, I lost the breaks again while I was on my way to work around 7:00 pm. I really got very scared because there was so much traffic at that time. I was able to stop and park my car slowly to the curb without hitting anybody else by using the foot break. Action after the second incident: same night, we towed the car back to the dealership for repair, and after a week of waiting, they finally came back to us specifying that the whole master cylinder and brake pad assembly is defective and needs to be replaced and will cost more than 4k for parts alone. Contacted Toyota about this issue, and they said that they will not assist us, since we exceeded the warranty period.

Experienced a complete brake failure while driving 2010 Prius. Dealer indicates brake booster failing and leaked nitrogen into master cylinder which should then also be replaced. Dealer insist it is one assembly and estimates replacement to be $5,166 ($1,638 for booster and $2,466 for master cylinder). Due to the complete warningless failure of brakes while in operation it would seem to a critical safety hazard due to the design flaw in the combined brake booster and master cylinder brake assembly causing a brake failure in operation.

The contact owns a 2010 Toyota Prius. The contact stated that the abs and anti-skid warning lamps illuminated while the contact was driving 40 mph. The brake pedal was depressed however, the brakes failed. The emergency brake was used to stop the vehicle. The vehicle was taken to the dealer and diagnosed as brake failure. The master cylinder and the brake booster assembly both were replaced. The manufacturer was made aware of the failure. The approximate failure mileage was 50,000.

All brakes failed while I was going 69mph on I-75 south just north of the union centre boulevard exit, approaching I-275 at the butler/hamilton county line on sat. Dec. 22. . All warning lights came on and the warning "beeps". I was in heavy traffic but was in the right lane and was able to exit on the union centre exit ramp and roll to a stop. This happened the day after I had the car at performance Toyota in fairfield, OH for the 35,000 mile check/oil change (on Dec. 21) . The car had to be towed to performance Toyota on Dec 22; they determined the master cylinder failed (lost its vacuum) causing total brake failure.

On Tuesday October 02, 2012 at approximately 0510 the vehicle brakes went out and the brake, abs, and stabilization lights came on along with alarm. Vehicle was towed to Toyota dealership for repair - told it was the master cylinder. Vehicle picked up on morning of October 4, 2012 from dealership drove approximately 20 miles and the exact same thing occured. Brakes, abs, stabilization alarms came on. Toyota delership was called and said that the vehicle should be fine - system had cleared with part replacement - "maybe it was a bad part or there could be air in the lines. " vehicle is presently at the delearship awaiting inspection. Fortunately, no accidents or injuries occured on these dates. However because of the loss of brakes and near accidents this vehicle is now a threat to my safety. So far I have been lucky - I do not want to take a chance with the third being the time that I am in a serious accident.

2010 Prius brake failure. I was able to slow down the car by repeated pumping on the brakes. Fortunately, managed to crawl to a nearby Toyota dealer by using the pumping technique and have my foot on the emergency foot brake just in case. Toyota said I need to replace the master cylinder with actuator. Total cost parts/labor $4100. I am upset because my family or others could have been seriously hurt if I panicked and not pumped on the brake to slow the vehicle down. This is a serious hazard which should be known as I have seen other similar complains lodge online.

2010 Toyota Prius. Consumer states two brake system failures the consumer stated the vehicle began making an unusual sound and after a few days, numerous warning lights appeared on the dashboard announcing a failure of the braking system. The vehicle was towed to the dealer. An inspection revealed the master cylinder, booster and ecu needed to be replaced. The consumer paid $ 3,246. 83 for the repairs. However, nine days later, the unusual brake pedal sound returned, but the brakes worked and no warning lights appeared. The next day, the brake system completely failed while his daughter was driving the vehicle. Again, the vehicle was towed to the dealer, where the technicians determined the vehicle needed a new brake booster assembly. The consumer was informed he would only be responsible for the labor costs of $ 255. 48. The consumer believed the booster and brake booster were the same part, which was supposed to have been replaced several days prior. Jb.

Brakes failed. 2010 Toyota Prius. 160,000 miles on vehicle. When I started the car, I had no brakes. When I put the car in gear, I then had brakes. I had brakes when I pulled up to a stop sign. As I waited for traffic I then had no brakes. When I began to move I had brakes, but then as I gained speed, the brakes went out. I managed to stop with the emergency brake. Checked the brake fluid: completely full. Dealer said the master cylinder went bad. Orginal brakes on vehicle; not even half used. Highway miles on vehicle. Very hot day. I believe it is electrical, dealer says mechanical. Had there been an accident, this incident would be looked into. As it is, no dealer will look into a car that is out of warrenty. I complained for 5 months about the brakes when I first bought the car new. Dealer told me that there is nothing wrong with the brakes. Even after the recalls, there still is problems with the brakes. Now I believe there is a problem with the master cylinder, -the electric component part of it- but Toyota will only look into it when there is a serious accident.