2010 Toyota Prius driver assistance & safety tech problems

Related recalls

No recalls on file.

What owners say

1. Filed Mar 12, 2026NEBrakesDriver Assistance & Safety TechElectrical System

   i have have 2 problems, both was recalls, but this one they say expired in 2021 when i bought the car and toyota dealer didnt tell me had recall so i could fix it before it expired. there is a class action lawsuit in the brake booster, master cyclinder actuator abs pump fialing loosing brakes making grrr noises leaking all brake fluid out continously dangerous to drive can cause bad accident wreck since i drive down the hwy alot and this is the only car i have to drive, i…

   NHTSA complaint #11723750 · source
2. Filed Apr 15, 2025GADriver Assistance & Safety TechOther / UnknownTransmission & Drivetrain

   While driving through the mountains, the ABS, Brake, and Slippery (traction control) warning lights all suddenly illuminated on the dashboard. This happened without any noticeable trigger, and the warning lights remained on for the duration of the drive. I'm concerned about potential issues with the braking or stability systems and request a diagnostic check to ensure everything is functioning properly. Also I am aware that there was recall on Prius 2010 related to ABS…

   NHTSA complaint #11654656 · source
3. Filed Apr 3, 2025CABrakesDriver Assistance & Safety Tech

   My ABS system light is on. The Toyota mechanic has determined that it is due to Nitrogen gas from a component of the brake booster pump assembly could leak into the brake fluid. As nitrogen is released into the brake fluid, the brake pedal may have reduced hydraulic pressure. Under certain circumstances, this condition could affect stopping distance and increase the risk of a crash. Toyota recalled model year 2010 Prius vehicles manufactured March 31, 2009, through October…

   NHTSA complaint #11652694 · source
4. Filed Mar 13, 2025CABrakesDriver Assistance & Safety Tech

   I am writing to express my concern regarding an issue with the PCS System dash lights on my 2010 Toyota Prius. I recently became aware of problems related to the brake booster system, which I understand have been addressed through recalls or warranty extensions on certain models. I believe that the issue I am experiencing should be covered under warranty, and I kindly request your assistance in resolving this matter.

   NHTSA complaint #11648229 · source
5. Filed Jan 15, 2025NCBrakesDriver Assistance & Safety Tech

   Twice while I was driving on the highway, my ABS and brake light came on, and my brakes became less sensitive to pressure. That is to say, it took more effort and I had to push my brakes further towards the floor in order for them to respond. I went to an independent mechanic and got the code C1391 which indicates a brake pump accumulator issue. I went to a Toyota dealership and and had the car inspected. They confirmed the C1391 code and said the brake booster assy with…

   NHTSA complaint #11636126 · source
6. Filed Sep 20, 2024NCBrakesDriver Assistance & Safety Tech

   NHTSA CAMPAIGN ID: 13V235000 Toyota will notify owners, and dealers will replace the affected brake booster pump assemblies. The recall is expected to begin late July 2013. Owners may contact Toyota at 1-[phone removed]. Toyota is no longer honoring this recall. They think it is acceptable for me to drive around with unsafe and defective brakes.

   NHTSA complaint #11615643 · source
7. Filed Aug 19, 2024OHBrakesDriver Assistance & Safety TechElectrical System

   The ABS Pump( Accumulator and booster) are regularly failing on all Toyota Prius( 2010-2015). When the ABS pump starts to fail, the warning lights for Traction control, Brake and ABS come on. These lights come on at all speeds and its very hard to bring the vehicle to a complete stop when this happens. The brakes completely stop working and the brakes become rock solid. The brakes become so hard that they can’t be possibly be depressed to stop in time. I nearly missed…

   NHTSA complaint #11609288 · source
8. Filed Mar 6, 2024FLBrakesDriver Assistance & Safety Tech

   A warranty extension went out a few years back that said one might receive a "CHECK PCS SYSTEM" warning on the dash. This has happened to us, along with 7 other lights on the dash. Between the brakes being much less responsive, and all of the pre-crash warning / adaptive cruise / radar features being disabled, this could have caused an accident. The dealer checked out the car and states that the brake actuator has a leak and that it will be a costly repair - no less than…

   NHTSA complaint #11575839 · source
9. Filed Jun 25, 2023GABrakesDriver Assistance & Safety Tech

   The break booster started making a noise and my car should have fallen into the range of the previous recall for the exact part. I cant afford to change it so I continue to drive it and all of sudden the breaks are so hard to push and a constant buzz is going off! Autozone confirmed it was the break booster ans abs then a private shop did also

   NHTSA complaint #11528769 · source
10. Filed May 3, 2023WABrakesDriver Assistance & Safety Tech

    My Prius 2010 has thrown the ABS, Traction, and Brake HUD lights all together. I took it to an Autozone and scanned the code to get the C1391: Abnormal Leak of ACC PRESS error. Many Prius 2010 have this issue, I'm sure I'll need to replace the actuator and/or accumulator and I know that will cost a good bit, i hope Toyota could help us fix it.

    NHTSA complaint #11520320 · source
11. Filed Feb 28, 2023135,000 miFLBrakesDriver Assistance & Safety Tech

    The contact owns a 2010 Toyota Prius. The contact stated that while driving at various speeds, the vehicle started to hesitate. The ABS and traction control warning lights were illuminated. The contact stated that there was brake message displayed. During the failure the brake pedal had to be depressed twice before the vehicle responded. The vehicle was taken to the local Service Center who diagnosed that power brake booster and master cylinder needed to be replaced. The…

    NHTSA complaint #11509442 · source
12. Filed Sep 26, 2022NJBrakesDriver Assistance & Safety Tech

    Brake, ABS and traction control warning lights went on when I was driving. I was able to brake but it was not functioning at 100%. The local mechanic was able to scan the code to get the C1391: Abnormal Leak of ACC PRESS error. The warning lights remain when I drive or parked. I no longer feel safe driving my vehicle. I plan to take my car to the Toyota dealer for further diagnosis and repair. I was informed that this is a very costly repair.

    NHTSA complaint #11486381 · source

Source: U.S. National Highway Traffic Safety Administration (NHTSA) Office of Defects Investigation public data. Complaints are submitted by owners and are not verified by NHTSA or by us; a complaint does not prove a defect exists. View this vehicle on NHTSA.gov Methodology