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 2007 Toyota Prius owners, lightly cleaned up (personal details are redacted by NHTSA).
Under hard braking (over 50% of the pedal) the front passenger wheel applies all the force to stop the car to that one tire causing it to lose traction and skid. Brakes are insufficient to properly stop the vehicle and no warning lights are illuminated on the dash. Actually more than half of the time the whole dash does nothing, no MPH, no gas gauge, nothing but a blacked out information less panel. Then to top it off the car only has one headlight bc it blows what ever headlight I put into the ballast. 3 of the most common failures for a 2007 and my Prius has a grand slam assortment of serious potential life threatening problems that should have been repaired (never should have been assembled with) by Toyota. Minor wreck when attempting to stop the car under not driving conditions. …
Due to water infiltration from a poorly manufactured hatchback, water is able to get inside the "Supply Assy, Brake Control Power" module in the trunk of the second generation Prius. This part ultimately shorts out and fails causing a loss of regenerative braking and a "brake warning light". Toyota seems to be aware of the problem as a replacement module is now sold in a "water proof sheet" (see attached). Toyota has also moved this module to a different location (away from the rear wall of the Prius) in other hybrid vehicles (such as in the Camry where it has been moved forward). I wonder if the hybrid batteries in the Prius also fail due to water infiltration in the rear sections of these cars.
The contact owns a 2007 Toyota Prius. The contact stated that while driving the speed was unknown due to the instrument cluster being inoperable. On another occasion while driving approximately 45 MPH, the brake pedal was depressed but failed to operate properly; however, on that occasion the instrument cluster was operating as designed. The vehicle stability control, ABS, and brake light warning lights were illuminated. The vehicle was taken to an independent mechanic and diagnosed with an actuator and brake booster failure. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 203,202.
The brake actuator failed. When the car was diagnosed by the Toyota dealership, they identified the problem as an internal leak within the brake actuator. Luckily, nobody has been hurt attempting to drive the car, but it is still being driven to get it from home to the repair shop so anything is possible. The first symptom I could link to this was in 2023, when the car would not accelerate via the gas pedal after the brakes were pressed during cruise control. Turning off the car and turning it back on fixed the problem. Afterwards, the red brake symbol was turned on. From that point on, the brake light would only shine sometimes. leading me to believe there must not have been something wrong with the car, since nothing else happened after that. 2024 is when the red brake light and ABS symbol both lit up. …
Brake Actuator system (ABS) needs to be replaced with only 133K miles on my 2007 prius. I heard a sound and had a Toyota service center check for any issues. They told me it was the ABS system that needed to be replaced at a cost of $5K. The repair costs are greater than the car value. Toyota knows about this year, make, and model issue. I contacted Toyota Corporate about this this week and learned there was an extended warranty for this specific issue on my car. They refuse to honor the extended ABS system warranty even though I'm under 150K miles per the warranty. They told me a letter was sent to me about replacing it at no cost in 2017. I never received the letter nor did the Toyota service center I used at the time tell me about the issue. …
Brake Actuator Re. Vin: [redacted] On 4/13/21 my Toyota Prius '07 was diagnosed by Toyota of Hollywood of a bad abs actuator that needs to be replaced. The fact of the matter is that about 28 months before that on 2/14/19 the Actuator assembly was replaced by Toyota of North Miami after being diagnosed first by Toyota of Hollywood. The reason I choose to do the job in north Miami is because it was less costly. My question is how can a genuine Toyota part fail in just 28 months.? Many Prius owners have been experiencing this safety issue since 2018. The warranty enhancement program ended before the fact in 2017. And there seem to be a misprint because how can the Secondary Coverage end on the same date as the Primary Coverage? (2017) When you use the date of first use of a 2007 Prius. Toyota needs to do another Recall for this safety problem.
There is a known, (by Toyota), issue with the ABS brake actuator in many Prius generations including the 2nd generation Prius that I own. My mechanic said it would cost @$3000 to fix. This as I said is and has been a known issue with these cars that affects the ABS braking and puts myself, my family and any one on the road near me in danger. Toyota was quietly replacing these under an unadvertised, extended warranty program. Mine is out of this so called warranty period but if this was a known issue and was corrected at no cost due to the fact Toyota knew there was an issue why was there never a recall on the affected models all with this same problem? I feel that this dangerous problem should be corrected by Toyota at no cost to the owners of their dangerous affected vehicles.
Toyota has admitted that their BRAKE ACTUATOR assembly on their 2007 Prius FAILS and they will fix it for no charge BUT ONLY IF YOU COMPLAIN. The brake actuator on my 2007 Prius is now failing and the braking system has become UNRELIABLE and UNSAFE. Toyota should replace my failing brake actuator with a new unit for no cost because this is a SAFETY ISSUE. I refuse to pay $3000 out of my own pocket to repair an item which has a long history of FAILING.
Check engine light came on with codes C 1256 & C 1300. Primary issue is Brake actuator failure. Toyota is ignoring this known and repeated issue and it may lead to a dangerous/ deadly situation if brakes go out while driving.
After I noticed that the SUV sufficiently ahead of me in the same lane was stopping to make a left turn, I started slowing down with plenty of space. I glanced for a second to my right side to check safety around another set of headlights. When I faced forward I could see that I was getting too close to the about-to-turn car ahead of me. I immediately slammed on the brakes, but the car kept moving forward and slammed into the SUV's rear end. Thankfully there were no physically injuries, but the collision caused low/moderate damage to the SUV and major damage to my Prius -- enough that the radiator was clobbered, and that my car had to be towed. At the time of this post, the repair shop has not yet finished evaluating it and reporting on all the damaged parts and the estimate costs. …
Brake complaints in other Prius years
Frequently asked questions
How common are brake problems on the 2007 Toyota Prius?
NHTSA has 331 complaints about the brakes of the 2007 Toyota Prius, 17% of the model year's 2,003 complaints. The component named most often is antilock/traction control/electronic limited slip › control unit/module (12 mentions).
Is there a recall for 2007 Toyota Prius brake problems?
No. NHTSA lists no brakes recall for the 2007 Toyota Prius, though it has 4 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 2007 Toyota Prius brake problems start?
Half of the complaints with a recorded mileage happened before about 43,000 miles, and 30% before 25,000 miles.
Is it dangerous?
Owners linked 52 crashes, 1 fire and 22 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.