2011 Toyota Prius Complaint Log

The contact owned a 2011 Toyota Prius. The contact stated while driving 30 MPH, the vehicle accelerated at uncontrollable speed, and an unknown warning light illuminated. The contact depressed the brake pedal desperately and the vehicle would not stop. The contact swerved into the lane of the opposite direction causing the contact to strike the front passenger end of the vehicle traveling in the opposite direction, causing the other vehicle to drive into the woods, and the contact vehicle spun in a circle. The contact stated he pulled the emergency brake causing the vehicle to come to a complete stop. No air bags deployed. No one was injured but the contact was unaware if there were any injuries to the other driver. A police report was filed. The vehicle was towed from the scene and later deemed a total loss. The manufacturer was contacted, and they stated that the accident was being investigated. The failure mileage was 3,000.

The contact owns a 2011 Toyota Prius. The contact stated while driving approximately 35 MPH, the contact smelled an abnormal burning odor and then heard an abnormal explosion. The contact observed black smoke coming from under the hood. The contact pulled off the road and turned the vehicle off. The contact stated no warning light was illuminated. The contact lifted the hood and saw flames coming from under the engine. The contact was able to extinguish the fire with a fire extinguisher. The contact had the vehicle towed to his residence. The contact called an independent mechanic who diagnosed the vehicle and determined that the engine needed to be replaced. The contact stated that when the engine was lifted out of the engine compartment, there was a hole in the engine block. The vehicle was repaired. The manufacturer had not been informed of the failure. The failure mileage was approximately 150,000.

The contact owns a 2011 Toyota Prius. The contact stated when his wife turned on the vehicle the brake, abs, and traction warning lights illuminated on the instrument panel. The contact stated while she was driving at 10 MPH, she noticed that the brake did not have pressure as usual. The vehicle was diagnosed at an AutoZone, and they stated that there was an abnormal ACC (C1391). The manufacturer was contacted, and they stated that the vehicle was out of warranty. The failure mileage was 178,000.

safety brake booster and actuator concern. the car abs, master cylinder brake lights are on. the booster is making hissing air sounds and the brake pedal vibrates. the code is 1309 maybe more.. this is a problem with thousands of prius and costs thousands to repair. Toyota extended this warranty to 10 years 150k mine 2011 so lost the repair last year but only has 150k miles.

The contact owns a 2011 Toyota Prius. The contact stated that extra effort was needed to stop the vehicle due to the brake pedal being depressed to the floorboard. The contact stated that the traction control, ABS, and brake warning lights would appear upon starting the vehicle. The contact had taken the vehicle to an independent mechanic where the vehicle was diagnosed with a defective ABS actuator control unit and the contact was provided an estimate for the repair. Neither the dealer nor the manufacturer had been notified of the failure. The vehicle was not repaired. The failure mileage was approximately 133,000.

While driving at roughly 58mph, while going around a turn: multiple dashboard lights came on, Tire pressure, traction control, emergency brake, one other. My brakes became less responsive (roughly half braking strength). This is consistent with the pseudo recall offered by Toyota covering my vehicle for a limited time, for which no notice was given and no warnings were sent.this issue has caused over five dozen crashes and during the duration of the recall, vehicles were not eligible until the braking system had failed. There were no signs of the faulty part until after the extended warranty period had expired, but the issue is the warrantied part, and the failure is consistent with the failure caused by the manufacturing defect responsible for the extended warranty effective in 2017

Multiple brake warning lights came on at once. Took to dealership and was told Brake Booster Pump had failed requiring replacement of parts totaling in over $3,000 in cost. Attached is a class action lawsuit about this exact issue, as well as a Toyota Customer Service Bulletin acknowledging that they knew about the issue years ago.

All brakes warning light went on while driving. The anti skil, abs, emergency brake lights. The car was unable to stop and code reader indicated a brake booster pump and brake actuator/accumulator failure. The failure was confirmed, and the brakes just stopped working while driving. I almost crashed into another car as the brake was not working no matter how many times I press it. Contact Toyota, they are careless and said it was not cover in any recalls and an enhancement warranty just passed 4 months on my car. A previous voluntary recalls was issue for the car model year before mine. This is a fundermental feature of a car and should be fix regardless of age. It is putting people's lives in danger and will cause accident!

All brake lights came on while driving on freeway Abs, traction control, and Brake light Pulled over and brake pedal felt different, not as sensitive to braking as usual. Toyota dealer said code c1391, brake booser Internal leak

Brake System Warning light ABS warning light Slip indicator light 6/3/2022, while driving on the highway the above warning lights illuminated. I depressed the brakes but failed to engage. I was able to slow down by shifting the gear into “B”. Eventually the brakes engaged and I brought the car to a stop. Toyota created customer support program ZJB but the warranty covered a period until August 2021.

This issue started happening intermittently beginning in April 2022. The ABS/Traction Control/Emergency brake lights came on all at once and the car lost power braking ability. The car would stop, but it required much more force on the pedal and an increase braking distance. Folsom Lake Toyota Service said that there wasn't anything they could do if the warning lights had turned off and to try to recreate the issue. It happened again in May 2022 while my daughter was driving the car back from Tahoe. She was not hurt, she avoided an accident. The car returned to normal operation after it was parked for one day. It happened again in July of 2022. This time the brakes hissed when applied. Called Folsom Lake Toyota to have it looked at. They diagnosed it as error code C1391 and the master cylinder (acctuator) and brake booster needed to be replaced. The repair was $3200, so we took the car to Roseville Toyota for a second opinion. Roseville Toyota was able to recreate the issue and the brakes completely failed at their service center. Their estimate was for the same $3200 repair. We called Toyota Corporate and they responded that there was a Toyota Customer Support Bulletin ZJB sent out for this issue. The bulletin extended the factory warranty on the parts for 10 years or 150,000 miles. The bulletin describes the exact code and symptoms our car experienced. Our car is 11.5 years old and 113,000 miles. In speaking with Toyota Corporate, their position is that they already extended the factory warranty once and since that our car is past the 10 years, they refuse to consider my complaint or provide any "goodwill" assistance with the repairs. Toyota knows there is an issue with their master cylinder and brake booster parts. They set an arbitrary warranty extension date rather than recalling the cars. Toyota is waiting for the brakes to fail BEFORE they fix the problems. My daughter could have been seriously injured or killed, or she could have killed someone else.

Hello, My vehicle a 2011 Toyota Prius V, Vin: XXXXXXXXXXX is showing the breaks, ABS and TRAC Warning lights and the breaks become less responsive. I was able to find out that TOYOTA had a recall for this issue that can be found here: https://static.nhtsa.gov/odi/tsbs/2019/MC-10158577-9999.pdf I email Toyota about the issue and this was their response: ===== BRAND ENGAGEMENT ADVOCATE, May 26, 2022 at 10:46 AM Dear Customer, Thank you for contacting Toyota Motor Sales, U.S.A., Inc. We are sorry to learn your 2011 Toyota Prius is experiencing concerns with the ABS and TRAC warning lights coming on. Toyota strives to produce long-lasting, trouble-free parts and while we cannot predict an average life expectancy for any specific part or component, we do provide our limited implied Toyota warranty which reflects our confidence in the products we offer. According to your Vehicle Identification Number (VIN), XXXXXXXXXX, the warranty for the part you are inquiring is 3 years, or 36,000 miles, whichever comes first starting from the vehicle's in-service date: 03/20/2011. We verified this vehicle was involved in Customer Support Program ZJB which was covered for 10 years from the vehicle in-service date which expired 3/20/2021 or at 150,000 miles which ever occurred first. We have confirmed there are no related to your ABS or TRAC concern. While there are situations where we gladly look into out of warranty financial assistance requests, we are simply unable to offer any assistance due to the age and mileage of your vehicle. If we do initiate any type of Safety Recall Campaign (SSC) in the future, you will be notified directly via first class mail. Sincerely, XXXXXX Toyota Brand Engagement Center ===== My request is that I wasn't aware of the recall until the issue started happening a week ago (5/15/2022) and I would love to get my car for the service recall or Customer Support program if Toyota would Email me or call me or send me a letter about this issue. Please help

While driving on the freeway 3 warning lamps lit up: parking brake, traction control & the "!" (attention warning light). I was about to exit and while braking noticed my brakes were not working well. It required at least twice the muscle effort to stop and took a further distance. Prior to this the brakes seemed to have been working perfectly. I stopped at an Autozone on the way home and they scanned the C1391 error code. A quick internet search showed that this had been the subject of a recall for the year and model of the car: 2011 Toyota Prius. I have not yet taken it to the dealer but understand the recall no longer covers this year. However, the safety of myself and passengers was definitely at risk due to a known problem of this car.

The contact owns a 2011 Toyota Prius. The contact stated while driving approximately 55 MPH, the vehicle stalled with the check hybrid system warning light illuminated continuously. The vehicle was able to restart. The vehicle was taken to the dealer where it was diagnosed that the inverter needed to be repaired. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 141,000.

My brake accumulator pump has begun running much more frequently than it should. Upon extensive online searching, I learned that this condition is warning sign of an eventual failure of the brake booster pump and/or master cylinder which will cause brake failure at an unpredictable time when the brakes are applied. I understand that this condition is known by Toyota and has been addressed by "warranty enhancement ZJB". However, my car is outside of the cutoff age/mileage. The president of Capistrano Toyota in Southern California made this problem known to you with an urgent letter dated 9/19/19 and expressed why this NEEDS to be a recall issue, not just what it is now. The reason is because not only has Toyota time limited repair coverage, they would not do the repair until failure occurred....a totally illogical and dangerous plan. I should not have to pay ~$3000 to have this well-known problem repaired at my own expense just because the invitable failure hasn't happened yet, and I'm not within Toyota's arbitrary time limits for having the repair covered at no cost. The symptoms I am experiencing are precisely those that are the precursor to this known failure. Why has NHTSA not acted to force this issue to be a full recall? You are putting lives at risk by not acting in a timely fashion given the Toyota dealer's warning I mentioned above.

Driving on a cross country trip and went over a bump to have all the brake lights on the dash illuminate and brake system failed. Brakes were very hard to push but was able to safely stop the vehicle. Brought it to Toyota dealership and was told that the master brake cylinder, hydraulic brake booster and pump assembly needed to be replaced and that the vehicle was not safe to drive. I was advised that the parts are on national backorder and they don’t know when they’ll get the parts. I did more research into this and this is a known issue that Toyota has refused to address outside of a limited program that is no longer active for this model year. Toyota is refusing to cover any of the costs. This is an incredibly dangerous safety issue and Toyota should be forced to recall and reimburse everyone who has had this issue regardless of model year or mileage. Toyota is currently facing a class action lawsuit for this issue as well.

ABS actuator and pump failing, which requires much harder pushing on the brake pedal to come to a complete stop. This part is supposed to last for the lifetime of the car and is now failing roughly 11 years after purchase. I took it to the Toyota dealership and was quoted $2,500 to repair it.

The brake system failed. Over time there was a frequent sound (which I now know is the brake pump) when you opened a door. Eventually at 120K the entire brake system failed throwing the ABS code. I had to replace the brake actuator and booster (2 parts are recommended in the repair) for a little more than $1500. After speaking with the parts rep at Toyota (I replaced it with geniune Toyota parts) I was under the impression that the parts person knew that people frequently buy these parts which led me to believe something was known but not divulged.

All the brake lights, ABS, and VSC lights came on, lucky I was not on the road. Now my brakes are mushy and I'm driving without any safety. I learned of the Customer Support Program - ZJB, but it expired for my 2010 Prius w 85k miles on 8/31/2021. I called Toyota Cooperate Office, they could not care less. They told me it is expired, bye! They need to make this a recall as the it is a major KNOWN problem for many cars. Repairs will run $3500 plus. This is my 2nd Toyota I bought brand new, and my last if Toyota is not willing to help.

Traction control, ABS, and brakes come on all at once and brakes don’t work properly. This happened a few times on the freeway and thank god I didn’t get into a crash. Car doesn’t feel safe to drive. I took the car to a mechanic to check the codes and the code C1391 (abnormal leak in accumulator) came up. I see that this is a very common problem with Gen 3 Prius’. Toyota has not called these car even though the problem seems to happen to all Prius’s of that generation. This is very dangerous and I fear driving my car and that the brakes might completely fail potentially causing a crash at accelerated speeds.

Electric front window will not work. Could not find any bad fuses.

The brake system is constantly failing/malfunctioning.It is available for inspection upon request. There has been several incidents where other vehicles have nearly been rear ended. I took my 2011 Toyota Prius (hybrid) to Toyota approximately 8 months ago. They/Toyota did confirm that the problem was indeed the brake booster. The warning lamps did come on soon as the brakes started malfunctioning.

The contact owns a 2011 Toyota Prius. The contact stated while driving 50 MPH on the highway, the brake pedal was depressed but failed to respond. The contact depressed the brake pedal harder and the vehicle almost came to a complete stop. The ABS warning light, the brake warning light, and the traction control warning light illuminated. The contact stated that she exited the highway and was able to continue to drive by slightly depressing the brake pedal. The vehicle was taken to the dealer where it was diagnosed that there was an internal malfunction of the brake booster and the brake booster assembly pump. The vehicle was not repaired. The contact contacted the manufacturer and inquired about assistance with repairing the vehicle under an unknown customer satisfaction program. The manufacturer informed the contact that the failure was not a safety issue and they could not assist as the customer satisfaction program had already expired. The failure mileage was approximately 90,000.

My daughter was driving the vehicle on highway and all dashboard lights came on. Abs brake and traction. The brakes would not work. She had to decelerate and pull off and turn car off. Terrifying. Got it checked at Toyota. Told them about that and how car lunges forward when brakes hit on a bump or pothole. We had to pay 2500 to replace brake booster which had an “internal error”. Got car back and all lights came back on. I’m literally terrified to drive my car because of what may happen. Toyota refuses to recall and fix whatever this issue is.

ABS actuator pump won't stop running, ABS light comes on, and brakes are spongy.

I have a 2011 Prius it has no warning light in the dashboard but the brake was causing me problems when I stopped the car almost causing me to crash so I had it inspected by a mechanic and got a FIXD sensor both are telling me it’s the brake actuator( code c1391) I could of been seriously hurt and I drive my toddler and I to and from places.

I was driving my vehicle through a state park, on a mountainous road that’s curvy and hilly. I was going about 35-40mph up a hill. As I was accelerating up this hill, my cars break light notifications all went off. 3 of them; stability control, ABS and one other. When I got to the top of the hill, I had to go back down a hill. I tried hitting the brakes and they were extremely weak. I could barely slow down or stop safely. I knew I had about 5 more minutes of driving left through this park so I went 5 miles an hour to not run into trees or slide off the road around a curve. I immediately got to a parking lot and called for a tow truck to take my vehicle to the dealership. When it was dropped off I received a phone call from the dealership saying my brake actuator had gone out. It will be $2,655 to fix… the part? $2000. Apparently there was an extended warrantee on this part. That ended on 12/31/2021 or 150,000 miles. My incident happened on 1/26/22 (less than 4 weeks later) with 153,059 miles on my vehicle. I contacted Toyota Corporate and was told they couldn’t do anything about it. I was given a ticket number of 220127001781. I told them I never received a notification and begged for mercy on this part. I told them my phone number and email had never changed since buying the vehicle. I called another mechanic and was advised that there were 44 people on the waitlist for this exact part. I’m only 26 days and 3,059 miles over each warrantee and they’re refusing to help for a $2,000 part that is CLEARLY a safety problem for this vehicle.

The contact owns a 2011 Toyota Prius. The contact stated that she was hit by another vehicle while turning left onto a highway at 5 MPH. The contact was hit on her driver-side door at approximately 60 MPH and the airbags did not deploy upon impact. The contact stated that the driver seat had collapsed backward onto the rear driver seat which sent her over the steering wheel and into the windshield. The contact lost consciousness upon impact and when she came to, her hands were dangling over the steering wheel with her head pinned to the windshield glass. The contact was removed from her vehicle by authorities and was transported to the hospital by ambulance. The contact was treated for a broken sternum, four broken ribs, two on both the left and right side of her body, and severe bruising on both the left and right side of her entire body. The contact stated that five occupants inside the other vehicle were all transported to the hospital including a four-year-old child whose car seat broke upon impact. The whereabouts and injuries of the occupants are unknown. A police report was filed at the scene. The vehicle was towed to an independent tow yard but had yet to be destroyed. The dealer nor the manufacturer had yet to be notified of the failure. The failure mileage was 117,000. The VIN was not available.

My husband and I bought a 2011 Toyota Prius 7 months ago. It was a one owner car in excellent condition with unusually low miles. The last two times we've had the dealership service it we've asked about a noise that the brakes were making. Both times we were told the brakes were fine and didn't need any service. Two days ago the ABS light came on. We immediately took it to the dealership. Yesterday we were told that the brake booster and actuator have gone out in the car. Turns out that Toyota issued an extended warranty for this exact repair to be done due to a manufacturers defect with the parts. It was for 10 years or 150K miles. It expired in October. My car has less than 90K miles on it! Now I have to pay $2800 to repair a manufacturers defect because Toyota refuses to fix it now. This is a known safety issue. They are doing everything they can to save money and avoid a recall. This is NOT good business. There is currently a class action lawsuit that has been filed against Toyota for this very issue. Toyota refuses to recall the product and does everything in it's power to not fix the issue. People have already been injured due to this issue. They even tell the dealerships not to fix the issue under the warranty unless the car spits out a particular code - no matter the issue someone is having with their braking system. A quick Google search will yield many testimonies from others who are part of this lawsuit who are experiencing the same issues. This is a known safety hazard due to a manufacturers defect that Toyota has known about for years. This is not a new issue and it effects several types of vehicles made by Toyota. I have made many phone calls to customer service and been told several times by different people now that this is no longer their problem. Toyota refuses to step up to the plate and fix this issue in these cars. This is not just in the Prius. They have made it abundantly clear that they DO NOT care about the safety of their consumers!

It's the exact issue from the ZJB customer support program. The brake booster is faulty. All the brake warning lights came on all at once. A few weeks ago the brakes were starting to make a noise so I brought it to the Toyota dealer and also called Toyota customer care. The dealer ran a diagnostic and said the booster needed to be replaced but Toyota customer care wouldn't cover the $3500 fix because the customer support program ended on Aug 31 2021. The extension of the ZJB program covered 10years or 150,000 miles. Even though my Prius is a 2011 and got the diagnostic done in 2021, they said I was technically past the 10 year mark because evidently my Prius was initially purchased in September of 2011 and I had the problem diagnosed in Dec of 2021. Three months late. I've spend hours on the phone with Toyota pleading my case and they have been of no help. They know this is a problem. There's a class action lawsuit. There's been petitions. This issue needs to be recalled.

The brake actuator failed leaving the vehicle with no brakes.

While driving on a freeway in December 10th 2021, the ABS, Brakes and Tire pressure sensor lighted up and suddenly the brakes felt stiffed and the car did not respond as usual. Luckily I was able to move to the side, stop and make sense of what just happened. I went straight to a mechanic and got the diagnose C1391. He share the bad news, the cost to fix it would run over $2000. After further research, I found out this is an ongoing issue with many Prius specially 2011. It appears there was a customer support program related to this issue that I never heard of. Now I do, but it is too late. It will cost me serious money to fix it. This is a safety issue that can not be ignored. Toyota should be made responsible to fix it. Either they do it voluntarily or some of the owners may have no choice but to take this issue to court. It is my understanding there are some law suits filed already. We need this issue to became a recall, before someone gets hurt. I will have to consult with an attorney.

The contact owns a 2011 Toyota Prius. The contact stated that while driving at 60 MPH, the brake pedal was depressed but hesitated to respond. The contact did not recall the number of feet in stopping distance delay. The ABS warning light, traction control warning light, tire pressure warning light, and an unknown warning light were illuminated. The Brake message was displayed. The vehicle was taken to the dealer who diagnosed that the brake booster and the brake booster pump needed to be replaced. The manufacturer was notified of the failure and advised the contact that the failure was a known failure however, the extended warranty had expired. The vehicle was not repaired. The approximate failure mileage was 139,000.

The ABS actuator on my 2011 Toyota Prius has failed, which is a known and common issue with this generation of Prius vehicles. The component causes abnormal brake pedal feel and inconsistent braking performance. The vehicle has been inspected and diagnosed by a Toyota dealership, who confirmed the ABS actuator assembly needs replacement. This failure poses a serious safety risk because it affects braking reliability and increases stopping distance, especially during sudden stops or wet road conditions. There were no warning lights or messages prior to the failure. The vehicle is available for inspection upon request. The problem has been confirmed by the dealership service department but has not been inspected by the manufacturer, police, or insurance representatives.

While driving a 2011 Toyota Prius, 3 dashboard lights (ABS, Brake, and yellow) all lite up at once, making braking difficult. My daughter almost rear-ended the car in front of her. When taken to the dealership, my car had an error of C1391. There was a customer support program from Toyota "ZJB" with this exact diagnosis of issues with the brake booster, which I was never notified nor was it listed on their website. They refused to fix it as it had expired. My car has less than 100,000 miles even though their recall listed up to 150,000 miles. I've attached the Toyota dealership diagnosis and repair cost of $2969.99 which I can not afford. I'm assuming that now traction control and anti-lock braking are now non-operational making this car dangerous to drive, especially for my daughter.

September 28, 2021 I was driving on a highway when my ABS lights, brake lights, and traction lights went on. I noticed a changed in my brakes and felt unsafe to drive . Luckily I was able to pull over. I took my car at Toyota and they confirmed its the hydraulic brake booster & pump. $2,900 for a warranty that was expired 4 weeks short. I read this is an on going problem and lawsuits about their brake systems. This should be a recall safety issue! It's unfair they allowed 2012 prius models and newer years to have theirs warranty extended to December 2021 but not the 2011 prius?? They should offer the deadline to ALL prius models or at least feel free to help out. 135k miles in and I can't believe it's worthless all because Toyota couldn't adjust they policy to extend the dates.

one year after bought, was losing power, replacing a lot of batteries, headlights and lamps then car would lose power while driving, not start continually everyday for each day after and even started on its own. i took in a lot and they put my vin to the wrong person..someone rainsford so my service recs were not recorded. said no battery code, didnt check altenator, and even tho serv advisor said the break was squishy to him and he heard the loud buzz noise when pushing, it was not replaced. they tried to blame it on keys being in car which is how it starts and runs! not parked on hill or in bad temps and driven long trips, none of which SHOULD BE REQIRED to start a car to get to dying patients on time. we bought charger and use on both priuses daily. lost power while driving, got hurt, and josh's pt. died. nothing but headache nightmares. have long written records where submitted all and they just like to deny things or try to find a way to blame on consumer. my only fault was buying an undisclosed deathtrap. they need to refund us both cars and damages and expenses and our time and missed work. the shuttle was a joke. i have my own top notch code reader and it said battery was fine. it was new, yet they wanted to sell me one so they said it coded but refused to show me. they are just trying to make money and really hurting people. sending my title and all my personal info to a stranger and me catching after 7 years broght on an ID theft im still fighting. very rude front staff and drivers..sheldon.

My car is a well-maintained 2011 Prius 4 with only 88k miles on it. Recently the traction light, the tire pressure light, the BRAKE light, and the ABS light came on suddenly at once. I took it to my mechanic, who is a certified Prius technician, and he diagnosed it to be a defect in the brake booster and the booster pump (basically my brakes can stop working at any moment). He also mentioned that this was the 3rd Prius this week to come to his shop with this problem. A problem that is not only incredibly unsafe but costs $2,000-$3,000 to fix. One of his customers couldn't afford it or wait the week for the part to arrive and, against his advice, left with her car and is driving around with brakes that could fail at any moment. This seemed wildly unsafe for any Prius driver, so I went online for further information and I found a petition for a recall with 177 complaints and 60 car accidents because of their brakes failing. I also found that Toyota had issued a "Customer Support Program ZJB" for this very issue. Which is great except for all the Prius owners, like me, who never received notification. I know for a fact I would have gotten my Toyota looked at (and fixed) if I would have known about this. It's too risky not to. According to Toyota, there are approximately 946,100 vehicles covered by this Customer Support Program ZJB. That's 946,100+ people who have the risk of their brakes failing and they might not know about it. I know there is only so much that Toyota can be liable for but shouldn't this be a recall and fixable for all owners at all times? I asked Toyota about Customer Support Program ZJB and they informed me that my coverage expired only 14 days ago, so they can't help me. THIS DANGEROUS ISSUE SHOULD NOT HAVE AN EXPIRATION DATE. This should be fixable to all Toyota drivers regardless of when they first drove their car or some arbitrary date that Toyota created. We trust Toyota to keep us safe by buying their vehicle in the first place.

The brake booster pump is failing, and it is available for inspection upon request. My safety is put at risk because when it fails, my breaks will become extremely difficult or impossible to apply; if the vehicle is in motion and I need to apply the brakes at the time of (or after the) failure, I will be unable to stop the vehicle safely, putting myself and others at risk of collision. The problem been reproduced and confirmed by a dealer. Besides The Toyota dealer, the vehicle or component has not yet been inspected by the manufacturer, police, insurance representatives or others. There have not yet been any warning lamps or messages regarding the failing component, however I discovered the issue because of the symptom of a high frequency (every 25 seconds or so) of the whirring noise made by the leaking brake pump when it engages, without ever applying the brakes in between. Symptoms were first noticed approximately a week ago, or 4 days before taking the vehicle to the dealer.

The 2010 Prius will suddenly develop Brake faults. The BRAKE, ABS and Traction Control lights will light up on the panel. The cars braking capacity effectively reduces to 50% and the regenerative charging also goes missing. This is an issue when the car all of a sudden would brake with half the capacity anticipated putting the occupants and others around at huge risk. Toyota does not have a plan to fix this issue yet - they would reset the code which fixes the problem but for a couple of trips / days / weeks.. an uncertain time until this happens again. Replacing brake oil, boosters and pads did not help. I am not sure what could the remedy be, please advise Toyota to investigate and create a formal recall where all effected cars could be repaired for the drivers safety.

Our Prius started showing brake issues in June 2021 that has us concerned about safety. The car lurches when the brakes are pressed, and the brake functions inconsistently. This seems to fall under the “brake booster pump assembly with master cylinder” issue that many others have complained about. When we called Toyota, they said a letter was issued in April 2019, but when we took the car in for diagnostics in August 2019, the brake issue (diagnostic code) didn’t appear then. So they said they won’t fix the hazardous defect. Even more troublesome is the fact that this issue has caused crashes and injuries in the past, and Toyota hasn’t issued a recall. Please help consumers hold Toyota accountable for putting their customers in harm’s way.

BRAKE/TRAC/ABS LIGHTS ON AND WILL NOT TURN OFF WHEN PARKED OR IN MOTION. THE LIGHTS CAME ON THE NEXT DAY AFTER PARKING OVERNIGHT. HYBRID BATTERY NOT RECHARGING FROM BRAKING. CAR MAKES A WHIRRING SOUND EVERY 2-3 SECONDS, SEEMS TO BE COMING FROM THE BRAKING SYSTEM. FEELS UNSAFE TO DRIVE SINCE BRAKING DISTANCE FEELS LONGER. CAR HAS ABOUT 197,000 MILES.

THERE WERE THREE DRIVING INSTANCES WHERE, WHEN APPLYING THE BRAKES, MY BRAKE FOOT WENT COMPLETELY TO THE FLOOR. TWICE I WAS ON THE CITY STREET AND ONCE IN A PARKING SPACE. MY SPEED AT THE TIME WAS SLOW BUT THE BRAKE PEDDLE GOING TO THE FLOOR DID NOT STOP IT. NO TURN WAS INVOLVED IT DID STOP EVENTUALLY BUT THE CAR WAS CARRIED MUCH FURTHER THAN EXPECTED WITH NO BRAKING CONTROL. THE ONLY COLLISION WAS WHEN THE FRONT END HIT A LOG IN MY HOME PARKING AREA. THE CAR WAS TOWED TO THE DEALER'S SERVICE DEPT., BUT AFTER 4 HOURS, I WAS TOLD, "COULD NOT DUPLICATE CONCERN CUSTOMER WILL HAVE TO RETURN WHEN FAULT IS CURRENT". THEY DROVE IT AND USED THEIR COMPUTER BUT NOTHING FAULTY WAS EVIDENT. I WAS SENT OFF IN THE CAR. WITH AN INTERMITTENT FAILURE, IT WASN'T LIKELY. SO, NOW I HAVE A CAR I DON''T DARE TO DRIVE AND WON'T SELL BECAUSE IT'S A HAZARD!

BREAK ACTUATOR IS FAILING IN MY 2011 TOYOTA PRIUS. THE CAR NOW HAS A UNPREDICTABLE ABS BREAKING SYSTEM. SOMETIMES THE BREAKS WORK AND SOMETIMES THEY QUICKLY FAIL AND A ERROR LIGHT COMES ON. THE LIGHT THAN GOES OUT AS IF NOTHING HAPPENED AND ALL IS FINE. THIS IS A VERY DANGEROUS PROBLEM THAT WILL LEAD TO MANY ACCIDENTS BECAUSE THE VEHICLE TELLS YOU ITS GOOD TO GO, MEAN WHILE THE ABS SYSTEM IS FAILING TO STOP THE VEHICLE INTERMITTENTLY. I AM SCARED BECAUSE I DONT KNOW IF THE CAR WILL DO THIS ON A TURN THEN LOSE CONTROL INJURING MYSELF AND OTHERS.

THE BRAKE BOOSTER IS CYCLING AND LIGHTS GO IN AND OFF. I'VE READ THAT THIS MEANS IT'S A FAILED BREAKER BOOSTER OR PRESSURE VALVE IN THE BREAKING SYSTEM. IT'S VERY COMMON TO FAIL, LOTS OF PEOPLE HAVE REPORTED IT

A CHECK HYBRID SYSTEM ALERT CAME ON AND INCLUDED LIT BREAK, CHECK ENGINE, STEERING, ABS, SKID AND YELLOW TRIANGLE WITH AN ! MARK INSIDE. THE CAR STOPPED AND I COULD NOT MOVE IT. GOOD THING I WAS ON A SIDE STREET WITH LIGHT TRAFFIC. THIS HAPPENED AGAIN AFTER THE INVERTER WAS REPLACE; AND IT HAPPENED AGAIN AFTER THE 12 V BATTERY WAS REPLACED.

THE CHECK ENGINE LIGHT IS ON; THE CAR HAS STALLED AND LOOSES POWER IT NEEDS TO HAVE THE STICKY EXHAUST GAS RECIRCULATION VALVE TAKEN CARE OF. IT ALSO NEEDS PSV COVERAGE FOR BRAKE BOOSTER AND BRAKE BOOSTER PUMP ASSEMBLY SAFETY WARRANTEE ENHANCEMENT

2011 TOYOTA PRIUS. CONSUMER WRITES IN REGARDS TO AIRBAG SAFETY RECALL. *LD THE CONSUMER STATED THE VEHICLE NEEDED TO REMAIN AT THE DEALERS FOR THE FULL DAY IN ORDER TO HAVE THE RECALL REPAIR COMPLETED. THE CONSUMER WAS UNABLE TO DO LEAVE THE CAR. THE CONSUMER ALSO STATED THE DEALER WANTED TO CHARGE A DIAGNOSTIC FEE. *JS

BRAKES COMPLETELY FAILED. LOUD BEEPING SOUND HAPPENED, COULDN'T STOP CAR EVEN IN A PARKING LOT. HAD TO USE TRANSMISSION TO SLOW TO A STOP. WAS IN A GROCERY STORE PARKING LOT.

My brakes make a weird noise and I have to press hard to brake . I’ve taken it to a couple of mechanics and the brakes are fine, but it might be the brake actuator.