Toyota Prius c Brake Problems

Brake complaints by model year

Mileage when the problem started

• Under 25k
  847%
• 25k–50k
  529%
• 50k–75k
  16%
• 75k–100k
  212%
• 100k–150k
  16%
• 150k+
  00%

What owners report

My name is [redacted] currently active duty military stationed in San Diego. Can you please check if my car VIN number [redacted] 2016 Toyota Prius C 103k miles still covered for brake booster malfunction code 1391. I have told they are extended warranty up to 10 yrs less 150k. Toyota dealer here seems not seeing any warranty coverage issues. Please help me look into this issues thank you. My contact number is [redacted] .

Brakes, I have anti lock brakes, but if I have to press the brake the least bit hard it locks up. I have talked to the dealer about this problem and he says its normal. They also grab when I put them on. This is my third Prius and I have never had this problem. I think this needs to be looked into.it makes the car skid . Thank you

A few months after purchase, while driving the car, all of the dash indicator lights came on and the display flashed "brake override malfunction, see dealer." the brake and the gas were not being used at the same time. Shortly thereafter, while stopped at a light with a foot firmly on the brake, the brakes disengaged and the car lurched forward about a foot before the brakes engaged again. The dash lights stayed illuminated the remainder of the trip. After taking it to the dealer, they reset the computer and returned the car. While driving it home from the dealer, the same problem reoccurred. The dealer then replaced the master cylinder and claimed the problem was fixed. A few months later, the same problem reoccurred. Once started, the problem occurs every time the vehicle is driven. …

This has been happening since about a month after I bought the car but the brakes have been making an odd noise. It does not matter how fast or slow I am going but it makes that noise and it makes the brakes slip and not come to a full stop fast enough. I have gone to Toyota 4-5 times just for this reason and all they can say is that everything is fine. It can't be fine if the car is slipping and not stopping when it should! Mind you, I live in california and there is almost never rain so it is not due to wet roads.

The brakes failed while driving at a high speed (55 MPH) on the highway along with failing when braking at a low speed (15 MPH) near a major intersection. This occured with no warning other than the Brake, ABS, and Traction Control appearing as the failure was occuring. The warning light when away after the first occurance and the brakes began working again within a few moments. It then reoccured and the lights did not turn off and the car began beeping. My safety, along with my passengers safety and the safety of those who were in the area was put at risk. The highway failure occured in a high traffic area which was also a construction zone so workers were at risk. It has been confirmed by an independent service center that the Power Brake Booster and Brake Master Cylinder Assembly failed. There were no sypmtoms or warning prior to this dangerous failure. …

While driving, suddenly all brake lights and warning lights went on, and brakes stopped working normally. It became difficult to brake (brake took a while to engage - had to press pedal to the floor). After diagnostics at the dealership it looks like the brake booster failed. Apparently Toyota knew about this issue as they did an extended warranty through a Customer Support Program, but unfortunately my issue occurred just past the expiration of that warranty. Since brakes are such a critical component of vehicle safety, if they don't operate well or as expected, it endangers the driver and everyone else on the road. It is wild that Toyota is aware of this issue but that there has been no recall yet.

The contact owns a 2013 Toyota Prius C. The contact stated while driving approximately 5 MPH and pulling out of the driveway, while attempting to depress the brake pedal, excessive amount of force was needed to depress the brake pedal. The contact stated that the braking distance was extended, and the vehicle was jerking while stopping. The contact stated that the ABS, Brakes, and traction control warning lights were illuminated. The vehicle was taken to the dealer to be diagnosed. The contact was informed that the hydraulic brake booster pump actuator and accumulator had failed and needed to be replaced. The dealer confirmed related the failure to Customer Satisfaction Program under NHTSA ID Number: 10181735 (Equipment Adaptive/Mobility, Equipment, Service Brakes) however the vehicle was no longer covered for the repair. The vehicle had not been repaired. …

Immobilized failure due to combination of brake hose failure preventing hybrid control/shift actuator. Hybrid steering lock became disengaged and could not communicate with the certification ecu due constant power being disabled due to complete main body failure. Hybrid system cannot go back into park however ecm side did. Ecm was not receiving power as dealer coded main body as a plug in hybrid effectively disabling fuel systems (including emissions/fuel safety) causing full misclassification in the smart key certification process. Car starts, goes into ready and disables LIN comms alongside cutting main relay due to tailgate and fuel constant powers being cut while driving.

NHTSA investigations