2012 Toyota Prius V

Upon driving out of my school parking lot at approximately 15 to 20 miles per hour I noticed a cushiony filled with a brakes and all of a sudden I heard a shhh all of my lights popped up on my dashboard. When I took my vehicle in to be able to find out what was going on with it I was told that I need a master cylinder and a brake booster. This was after having my vehicle for only 3 years where I purchased it from Rice Toyota Greensboro North Carolina.

Coming to a yellow light, I braked and the vehicle made a strange sound with loss of braking, so I sped up instead, having to go through a red light. Shortly after, that afternoon, when I again started the vehicle, the safety lights lit up in the dashboard and my vehicle kept making a strange cycling noise. As it turns out, it was the whole brake actuator assembly. Under great financial hardship, I had the vehicle repaired ($4300+). I applied to Toyota Corporate for help but they denied it, saying I was outside the extended warranty. I’ve since learned this brake problem was a known issue, and Toyota settled a class action settlement. My vehicle has only 90,000 miles on it, and it is has been used primarily as an in-town vehicle, our only car. I’m asking for a recall and reimbursement on repair for affected vehicles. Toyota has been allowed to get away with responsibility for a known issue by putting it into a extended warranty program, now expired. Meanwhile, this dangerous, known defect continues to happen to unsuspecting drivers. I was lucky with my incident, as no cars came out when the light changed, but it could have been a different outcome.

Had blown gasket repair last year (which was fixed by my local Toyota Dealership and all cost paid for by myself). Dealership acknowledged that there were known issues with failures due to clogged EGR's and out-dated manifolds. Was never recalled and did not know about the issue until after the incident. Wanted to report issues since it appears countless other have been in the same situation with gen 3 Prius. Toyota needs to be offering EGR cleanings and updated manifolds at no cost and reimbursing customer's for previous repairs.

brake warning lights (ABS, traction, and (!)) went on while driving on the highway with my 8-year old. Needed brake booster replaced. Replaced at dealership for over $4500. Was a year and a half outside of a customer support program that covered cost for our vehicle through Jan 2022. Called Toyota to see if they could do anything and to report safety issue. They did not give me any funds towards repair. I feel that this is a significant and scary safety issue, and an unfair financial burden for Toyota customers to bear.

The contact owns a 2012 Toyota Prius V. The contact stated that while driving at an undisclosed speed, he depressed the brake pedal to stop the vehicle; however, he had to apply extra pressure to the brake pedal and the brake pedal extended to the floorboard to bring the vehicle to a stop. No warning light was illuminated. The vehicle was taken to an independent mechanic where the vehicle was diagnosed, and the mechanic retrieved DTC Code: 1391. The contact was informed that the brake booster assembly needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 153,000.

My Prius V experienced brake failure today, with three warning lights appearing at once and the brake pedal not engaging the brakes unless it was pressed almost to the floor. This made it feel extremely scary and unsafe to drive. I was very upset to see that this is a recurring problem with Prius cars in this age range. Although I only have less than 120,000 miles on it, Toyota is not offering an extended warranty for the failing parts (brake master cylinder and actuator and booster) past 10 years or 150,000 miles. This is total BS if they already know that there is a problem with these parts.

Diagnostic code C1391 abs system. Brake accumulator pressure leak. This a known issue and common problem. $3000 dealer only repair. There was a customer service program and extended warranty. This is a major safety issue and Toyota has stopped offering any repair support and expects customers to cover the full repair price themselves.

In July of 2021 the Toyota dealership replaced the inverter on my 2012 Prius V. At the time, it also was exhibiting signs of the brake booster and pump failure as outlined in CSP 20TE07 (see https://www.toyoheadquarters.com/threads/2012-2014-toyota-prius-v-2015-toyota-prius-v-coverage-for-brake-booster-and-brake-booster-pump-assemblies-csp-20te07.2116/). It was inside the extended warranty period, but they would not fix it at the time, because it was not throwing diagnostic codes. Subsequently, the braking system malfunctioned, nearly causing a high-speed accident on the freeway. With diagnostic lights now showing, and code C1391 stored in the OBD system, I took the car back to the dealer, but now they said it was past the 10 year limit and still would do nothing about it. This is not acceptable! They knew the brake system was failing and a safety hazard, but would not address it, just because it hadn't actually failed yet. Toyota needs to further extend the warranty and take care of this brake failure past 10 years and 150,000 miles. Just because I took good care of my car and the brakes didn't fail as early as other owners, I should not have been subjected to the risk of brake failure or the high cost of repairing the brake system when Toyota took care of this problem for so many other hybrid owners. Please help.

The contact's wife owns a 2012 Toyota Prius V. The contact stated that while his wife was driving at an undisclosed speed, the brake pedal was depressed and went to the floorboard. Additionally, the brakes intermittently failed to stop the vehicle immediately. Several unknown warning lights were illuminated. The vehicle was taken to the dealer, where it was diagnosed, and the mechanic retrieved DTC code: C1391. The contact was informed that the ABS actuator and pump assembly needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 160,000.