2015 Toyota Prius

Bad break booster and was told I can’t get it repaired under the replacement program because it has to many miles! However I purchased my 2015 Prius used that had over 100 K already never received no notice from manufacturer or the dealer I bought the car from this is not fair and if Toyota is putting in faulty brake boosters, they should be replaced for free regardless of the mileage because I didn’t break the booster It’s the brake booster that was originally installed by the manufacturer! Someone needs to do something, especially if it’s not the car owner‘s fault It’s the manufacturer fault for installing faulty parts! I need my car as a single mother I can’t afford $2000 for repairs and labor

The ABS and traction light appeared on the dash while driving on the freeway. I attempted to brake, while merging to exit but the car brake system did not respond. Luckily there were no cars close to us. Figured it could be a brake fluid problem so I added more fluid and it went away for a bit. It’s come back again and my car feels unsafe to drive. The brake pedal feels stiff or sometimes mushy like dough. I am waiting to get a diagnosis on my car but from what I’ve read and what other prius owners are reporting, it appears to be the “break actuator and break booster pump” that is failing to work properly. Wondering if any other Prius owners have filed a complaint.

I was driving down the road when I noticed my brakes were not working. I had to push a lot harder on the pedal to slow the car down luckily, I did not crash into the car in front of me. I pulled over to see numerous lights on the dash such as traction, abs, and brakes. I had the car towed to Toyota where they quoted me almost $3000 to fix the brake accumulator and booster assembly. They said my car is outside the extended warranty of this problem. My car is a 2015 Prius with 154k miles. I found online that these things fail commonly on this generation of Prius. It's horrible for this company to charge us basically the cost of the car to fix the brakes.

"ABS ACTUATOR AND BRAKE PUMP - Remove & Replace - Hydraulic Booster Assembly" -High Voltage Auto LLC Bakersfield, CA Actually scared for my life when driving now. Brakes are now limp, constant sound of actuator cycling, code is C1391 Problem is reproduced by dealer and independent service. Yes parts were inspect by manufacture. There are multiple warning lamps, actuator cycling is constant piror to lamps finally indicating issue.

Brake Booster and Master Cylinder failed. Traction Control and ABS lights came on while driving. Upon inspection there is an issue with the brake booster and master cylinder. This is an issue that Toyota is aware of and were repairing under a customer service campaign. They are aware that these parts malfunction and instead of recalling them, they set expiration dates for free replacement. The car must be experiencing an issue and throw the correct code within the campaign window to be eligible for complimentary repair. The brakes failing in this way could cause great harm to me as a driver and others on the road making it imperative that I pay thousands in repair cause to ensure everyone's safety, though that is toyota's job.

Brake Booster failed on 2/11/2025 Its a known safety issue with Prius 2015 models. I took car to Toyota for repair. They told me it needs to be replaced but out of warranty as this cr was produced in Oct 2014 This is a major safety item. I took it in for 100000 miles check and it was not replaced then and now they are saying it is too late.

On the morning of December 11th, 2024, the brake system warning light (ABS, yellow) illuminated on the dashboard along with the red BRAKE indicator and the yellow Vehicle Stability Control (VSC) system light. I consulted a mechanic who performed a computer diagnostic and informed me that the ABS module booster had failed. He said that will order the part to change it but meanwhile he advised me to drive more cautiously and maintain a greater distance from the vehicle ahead, allowing extra space for my car to stop due to the increased braking distance caused by the failed ABS module booster. Later that day, at approximately 5:30 PM, I was driving home in heavy traffic, with speeds not exceeding 40 miles per hour. The vehicle in front of me began to decelerate abruptly. When I applied firm pressure to the brake pedal to slow down my car, it lost all control. The vehicle began to skid, with the amplitude of the skid increasing progressively. It struck the highway guardrail on the left, changed trajectory, crossed all four lanes to the right uncontrollably, and ultimately collided with the highway guardrail on the right side.

There is a known brake booster issue with the Toyota Prius. They extended the coverage to 150,000 miles. My car is at 127,000 miles and they said the repair isn't under warranty and will cost over $3,000 to fix. There was no pre-warning lights or information received about this repair notice. I only noticed this when the lights came on and our ABS lights went out. When I took it in they said I missed the deadline by 5 days, that I would have had to let them know by 11/20/2024. Which is insane for such a huge issue when I am well under the mileage coverage.

As many others have reported, the Brake Accumulator has failed. The symptoms began at 100,000 miles. When reported to the dealership, was brushed off as not a safety concern. It is, indeed, a major safety concern. My partner had the ABS lights come on and brakes freeze up while driving on a fast and congested highway. Furthermore, getting this repaired is nearly impossible. The only Toyota dealership in town is estimated a $5k price. And since independent shops often cannot perform this repair, there is no comparison possible. They simply push to buy a new vehicle instead of standing by one that should be operating normally. The dealership is Miracle Toyota of North Augusta SC. Consistently does not support the consumers concerns and simply pushes repurchase as the only reasonable avenue. This is a known issue for Toyota that has stranded many of us without the ability to keep this car on the road. Please resolve with reasonable repair options due to faulty design.