Just purchased the car from a used car dealer 8/26/2020 and was driving down a two lane road approximately 45 mph coming up to a stop sign and the brakes went crazy with a continuous buzzing sound from the brakes and the dash ABS, traction control, brake system warning lights all came on, would not stop causing me to run the stop sign and make a turn to slow down and finally come to a stop. Had the trouble code read and the store read the diagnostic trouble code as C1391 and reset so I could drive the vehicle slowly home. I checked for recalls on this dtc 1391 but my 2010 VIN was not included in the recall. They need to recall all of the 2010 Prius.

- Ooltewah, TN, USA

ABS system went out.

- St. Augustine, FL, USA

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.

- Austin, TX, USA

The red brakes light, ABS light and the 'yellow skidding car' icon lights all come on together, but intermittently. The brakes often feel difficult to press down upon starting the car. Ofter when the lights are on, the brakes feel spongy, or as though they may not stop the car. I took the car to the Toyota dealership and they concluded that the master cylinder and other parts needed replacing. I found out that Toyota has had lots of problems with these brake cylinders.

- Nacogdoches, TX, USA

Brakes system warning indicators light up. Brakes feel weak, need to step harder than normal to start slowing down. I looked this up on the internet and this a known defect that Toyota covers under 'customer support program zjb' for a certain period only. Of course it happens right after that coverage period. This should be a recall as it affects a known safety issue.

- Montebello, CA, USA

The brakes went completely out on the vehicle while driving on the highway. I had no ability at all other than the emergency brake. The dealer said that the cause was the brake booster and master brake cylinder.

- Williston, VT, USA

I was at highway speed when four annunciator lights illuminated on the dash (master warning, brake system warning light, ABS warning light, slip indicator). I decelerated vehicle using engine power then applied brakes. Brake pedal depressed approx. 3/4 travel (much further than normal) before braking action felt. I stopped vehicle, recycled power and warning lights remained illuminated and brake responsiveness was unchanged. Upon reaching destination, I downloaded error code (C1391) then called local Toyota service center. Informed that enhanced warranty letter zjb addressed this issue, however coverage expired 6 weeks ago. Service center directed me to Toyota customer care. Toyota customer care confirmed that the repair coverage had recently expired and they were not able to offer any assistance whatsoever. Due to the global pandemic, my driving had been severely curtailed since March. Now July, a required work trip led to this malfunction. This issue should be classified as a recall and not a warranty with an expiration. A major, flee-wide braking issue should require the manufacturer to repair.

- Horseshoe Bay, TX, USA

Prius has less than 100K miles and has been running perfectly. Today while driving, the brake, ABS and traction control lights came on simultaneously and began alarming, while suddenly my brake locked up. This could cause accident and injury if it occurred under the right circumstances. Apparently there was a previous brake booster recall that I was never notified of and which has since expired. This recall should be reissued to include the many 2010 priuses affected by this problem.

- Winston Salem, NC, USA

The brakes failed on the vehicle and I lost all ability to stop. Several dashboard lights were triggered about loss of ABS and braking. I was able to stop the vehicle only through the emergency brake. The Toyota dealer indicated that the problem was a failed brake booster and brake booster pump assemblies. There have been numerous complaints about this issue and tpyota needs to recall and repair this iissue.

- Williston, VT, USA

Traction warning light, brake light and ABS light all came on at same time while driving on the highway. I was told by a Toyota dealership it is a malfunction with the brake booster which is roughly a $3000 repair job at Toyota dealership. Customer support program "zjb" was created by Toyota North America for this issue in response to thousands of Prius models experiencing this severe malfunction, however, my 2010 Prius is no longer eligible for coverage for this repair, even though other Prius models are still eligible for complete coverage for this repair. This is a safety hazard and Toyota North America needs to stand by coverage for this grave malfunction for all models regardless of year or mileage. The dealership told me the car is not safe to drive, the brakes are not operating at full capacity. This is a safety hazard and happened while I was driving on the highway.

- Georgetown, TX, USA

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.

- Baton Rouge, LA, USA

The contact owned a 2010 Toyota Prius. The contact stated that while her husband was driving at 40 mph, the vehicle in front suddenly stopped, the brake pedal was depressed however it failed to engage causing him to rear end the other vehicle. The contact mentioned that her husband was already depressing the brake pedal when they completely failed. The air bags did not deploy. The contact stated that the front seat passenger in the other vehicle was transported to the hospital by ambulance due to feeling nauseous. A police report was filed. The vehicle was towed to auto body repair facility where it was awaiting inspection by the insurance company. The contact stated that the vehicle was a possible total loss aas the radiator and engine was damaged. The vehicle had been serviced at clearwater Toyota (21799 us hwy 19 N, clearwater, fl 33765 800-667-905) for a brake issue. The dealer refused to repair the brakes under an extended warranty due to an incorrect consistent failure code. The manufacturer stated that the sensor was not alerting enough for the repairs to be covered. The failure mileage was 200,000.

- Tampa, FL, USA

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 ( 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 won'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 Toyota 2010 has problems of brake issues, so I want Toyota take a responsibility to fix my brake problem.

- Redondo Beach, CA, USA

Brakes and vdc system constantly engage during U-turns, tight turning circles, causing the car to brake unexpectedly. While not accident has happened, it has caused a few near misses as my window to turn shrinks because the car is braking.

- Ogden, UT, USA

While driving on the highway the ABS warning light, brake light and traction light all came on at once, took to local Toyota specialist, diagnosed the code as C1391, an abnormal leak in break booster accumulator. Mechanic informed me that this issue was previously under safety recall and my vehicle had the proper repairs done, clearly this is an ongoing safety issue with this vehicle that is not being properly addressed by Toyota. It is also an extremely expensive repair which Toyota needs to be financially responsible for.

- Bushnell, FL, USA

Brakes failed while driving car (in motion) which almost caused an accident. The red warning "brake" light, yellow "ABS" and yellow traction control light all illuminated. This apparently is a known issue for the Toyota Prius and I have contacted them concerning the issue but they will not pay to fix the problem. My car cannot be driven at this point. This issue is a serious hazard and could easily result in an accident. They need to issue a recall.

- Solana Beach, CA, USA

Code C-1391 leak in brake accumulator.these should be a recall with Toyota putting a bad brake accumulator in Prius model.I notice it was a secondary recall with this part.Toyota know this is a safety problem when this happen the car goes to manual breaking and you can lose control of the car.please look into this problem.

- Killeen, TX, USA

Warning lights for ABS, brake and symbol indicating traction control is operating all lit simultaneously with a corresponding change in brake pedal feel. Toyota dealer diagnosed brake booster failure and initially quoted $1,915 to repair then called back to revise this to $2,915. There have been recalls on this part just not covering my VIN.

- Knoxville, TN, USA

On Friday, May 15 2020 I turned on my car and saw ABS, brake and vehicle traction lights illuminated. The brake peddle also felt odd. Within 30 minutes I took it to my local Toyota dealer. The service writer had a clear idea of what was happening as she said this has been happening a lot to Prius models. Sure enough the diagnostic code C1391. I was told I needed to replace the brake booster/pump assembly which would cost me $3,000! upon research, my car was covered under a tsb till November 30, 2019, but only if they failed. There was no recall issued by tms to pro-actively fix a known brake deficiency. My car has 159,000 miles, I have never had anyone service my vehicle besides Toyota dealerships (except tires). I called tms to corporate to see if I could be offered assistance, but was flat out denied (I can provide that case number if needed).I find it odd that Toyota began phase2 on 2011-2015 for same issue that lasts till April 2021. It is unsettling that if Toyota knows about the brake booster and pump problems, why they don't have a recall, but rather a wait and see if it fails under their 'secondary/enhanced warranty'. upset that if this happened 5 months ago, this would have fallen under their guideline to repair.

- Satellite Beach, FL, USA

Toyota usa failed to honor repair defect within the brake booster pump assembly. When this defect occurs, various warning lamps on the instrument panel made illuminate, I experience increased stopping distance, reduced hydraulic pressure within your brake system, the deactivation of brake assist, & the deactivation of vehicle stability control.Toyota previously issued at least 2 safety recalls. Designed to prevent similar dangerous occurrences. However, hundreds of thousands of Prius models 2010-2015 were excluded from those safety recalls including my 2010 model. As of today Toyota usa filed case number 2005052305. Safety recall in torrance California dated June 4, 2013 stated Toyota sales usa was conducting a voluntary safety recall involving over 87,000 model 2010 Toyota Prius however I called Toyota today and the insisted my vehicle was excluded even though in barely has 100,000 miles we just began to experience these brake symptoms. Customer rep insisted it was Toyota voluntary recall not enforced so my vehicle did not even qualified for a customer support service. Please help us have Toyota fix this safety issue asap before someone has a mayor accident. Warning lights for ABS, stability control, and warning lights all came on at once. Brakes became spongy when pressed. Was able to still brake but with much more effort and not confident in the braking. I had it towed to a local mechanic and the diagnostic error code registered "C1391". per mechanic this is for ABS accumulator, or booster pump failure or leak per mechanic. This happened out of the blue, no warnings. Per Toyota the part required are cylinder assembly brake and brake pump assembly. Cost to repair these parts per Toyota would be estimated at $2700.. attached video of actuator's loud noise it produces & dashboard showing ABS failed& brakes lights/also failed attempt to solve this with Toyota usa.

- Los Angeles, CA, USA