Which parts fail
Components named in complaints (service brakes, ABS, rotors and pads, parking brake).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2009 Toyota Prius owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2009 Toyota Prius. The contact stated that while driving at an undisclosed speed, several unknown warning lights illuminated. Additionally, the contact depressed the brake pedal however, the brakes did not function as needed. The vehicle was driven to the residence. The dealer was contacted and made aware of the failure. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure however, the contact was informed that the failure was like an unknown recall; however, the recall notification had expired. The contact was advised to report the failure to the NHTSA Hotline. The failure mileage was approximately 116,000.
The contact owns a 2009 Toyota Prius. The contact stated that while driving at an undisclosed speed, the brake pedal was depressed; however, the vehicle failed to stop as intended. The contact stated that the ABS warning light was illuminated. The vehicle was driven to the residence. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The dealer was made aware of the failure. The contact was informed that the extended warranty had expired. The manufacturer was made aware of the failure, and a case was filed. The contact was informed that the extended warranty had expired. The failure mileage was approximately 174,000.
The contact owns a 2009 Toyota Prius. The contact stated that while driving at an undisclosed speed, extra effort was needed to stop the vehicle while depressing the brake pedal. In addition, the contact stated that the instrument panel intermittently went blank and failed to operate as needed. The vehicle was taken to an independent mechanic where the contact was informed that the ABS and the instrument cluster needed to be replaced. The manufacturer was not notified of the failure. The vehicle was not repaired. The failure mileage was approximately 157,000.
The contact owns a 2009 Toyota Prius. The contact stated while driving at approximately 65-70 MPH, the ABS warning light illuminated. The vehicle was taken to the local dealer, where it was diagnosed that the brake pump actuator needed to be replaced. The vehicle was not repaired. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 236,425.
I went to park in a parallel space when all of a sudden my ABS, (!), VSC light come on with the loss of brake power and a loud beeping noise. With this sudden loss of brakes in the middle of driving, I could have harmed myself and others in any cars around me because I also lost steering capability. This is a problem that there was an extended warranty for, but there should be a recall. My car is a 2009 and was only covered before the pandemic and now it is 2021 and I have no recourse, but to try and fork over $3500.00 for which I don't have. I am a second owner and this is a very common problem amongst Prius owners. I didn't have any other symptoms that I could point out prior to this situation. I have had my hybrid battery, engine, ecu and most recently a stolen catalytic converter replaced. This ABS actuator problem needs to be addressed for another 5 years with a free repair. …
I was exiting the highway and had no brakes, the pedal felt hard but wouldn't slow the vehicle at all. In a panic I attempted to pump the brakes and by the grace of God was able to finally stop before plunging into something. The lights came on on the dash with a triangle and exclamation mark and a horrible continuous beeping noise started. I looked up the problem and found out this is a known problem with the Prius and there was even an extended warranty that ended in 2017 for the cause of the problem which is the brake actuator. Toyota quotes the repair at 2500-3000. So if it goes out after 2017 the cost is on you. This repair is necessary due to the huge safety concern!! Lives at risk because Toyota refuses to accept responsibility.
The hybrid water pump failed/ aka the inverter coolant pump. This was recalled years ago and has failed again. The previous owner of my car replaced it in 2013, so Toyota is refusing to replace it again, despite the fact that the part is faulty and has compromised the safety of my vehicle. This issue was diagnosed by a mechanic yesterday, error code P0A93. The master warning light, check engine light, brake light came on. The AC stopped working. The brakes nearly gave out on me driving on a bridge in New York City. This part was recalled. Toyota refuses to honor the recall a second time. They clearly did not properly engineer this part! It failed again! They should be responsible for fixing this issue.
ABs Light came on high pitched sound and brakes suddenly stopped working while driving making very unsafe driving conditions. i recently purchased this car as my second, 2nd generation prius but the abs recall was evidently not performed when it was recalled and extended. this puts me upside down in a loan because i have found the repairs will be $1000-$2000 and now I can not afford to drive it. the car is at my home and available for inspection upon request. i felt very unsafe last night and the abs light recently came on and was intermittently making the high pitch sound which was continuous last evening when i was driving when the brakes stopped functioning
The brake actuator is failing. This has been causing not only lower mpg, but uneven braking and sometime failed braking for the past several months. I have contacted Toyota and they said that the voluntary recall expired. I explained to them that the car was serviced at Toyota and was never given notice and that this is a danger to myself and my children. There are not only of hundred of documented incidents regarding the brake actuator failing, but there is also a new class action lawsuit against Toyota for the same issue with the newer generation Priuses.
Brake actuator is broken. Toyota knew about this problem and they had a warranty for 10 years or 150k miles. Mine only has 80k miles. The repair is half of what the car is worth. I thought a Toyota with such low miles would be dependable. Toyota knew that people have died from this problem with their car. I need this car to get to work and get my kids to school. It's older than 10 years so I am just screwed on something they knew was broken. Of course the sales person at the Toyota dealership did not tell us about it when he sold us the car
Brake complaints in other Prius years
Frequently asked questions
How common are brake problems on the 2009 Toyota Prius?
NHTSA has 199 complaints about the brakes of the 2009 Toyota Prius, 40% of the model year's 502 complaints. The component named most often is antilock/traction control/electronic limited slip › control unit/module (11 mentions).
Is there a recall for 2009 Toyota Prius brake problems?
No. NHTSA lists no brakes recall for the 2009 Toyota Prius, though it has 6 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2009 Toyota Prius brake problems start?
Half of the complaints with a recorded mileage happened before about 16,000 miles, and 65% before 25,000 miles.
Is it dangerous?
Owners linked 24 crashes, 1 fire and 7 injuries and 1 death to brakes problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.