NHTSA Complaint #11663086 — 2012 TOYOTA PRIUS

SERVICE BRAKES issue reported to NHTSA

Check any vehicle history by VIN - Free vehicle history report

Complaint Details

ODI Number 11663086
Vehicle 2012 TOYOTA PRIUS
Component SERVICE BRAKES
Date of Incident
Date Filed
Mileage N/A miles
Crash No
Fire No
Injuries 0
Deaths 0
Vehicle Towed No
State IA

Consumer Description

While driving my 2012 Toyota Prius, the traction control, brake, and ABS warning lights all came on at the same time. I used a home OBD scanner but it didn’t show any diagnostic codes. After some research and inspection, I discovered that the issue was related to a faulty brake booster and accumulator—something I’ve learned is a common problem with this model. I was relieved to hear that Toyota has an extended warranty on these parts. However, last night while driving, the brakes suddenly stopped functioning properly. It became very difficult to slow down, which put me in a dangerous situation. I’m deeply concerned about the safety risks this defect poses and believe this issue deserves further attention.

Related Complaints for the 2012 TOYOTA PRIUS

Other SERVICE BRAKES Complaints

#11719694 My Brake Booster/Actuator failed on me while on the freeway with out any warnings. It made it really hard to stop the...
#11717956 The vehicle is experiencing a suspected brake actuator / brake booster failure. Multiple warning lights appeared simu...
#11716476 Vehicle check engine code C1391 (Antilock Brake System - abnormal leak in accumulator) came up on 2/5/2026. Recommend...
#11713170 Vehicle: 2012 Toyota Prius Mileage: Approximately 217,000 miles While driving normally in traffic, the vehicle exper...
#11707166 My 2012 Toyota Prius plug in hybrid had just passed state inspections and was even looked at by a dealership a year a...

Recent Complaints for the 2012 TOYOTA PRIUS

#11707029 ELECTRICAL SYSTEM While driving, the vehicle experienced a sudden brake system malfunction without prior warning or gradual degradation...
#11707029 FUEL/PROPULSION SYSTEM While driving, the vehicle experienced a sudden brake system malfunction without prior warning or gradual degradation...
#11704752 SUSPENSION The contact owns a 2012 Toyota Prius. The contact stated that while reversing, the driver's side rear wheel flipped o...
#11702529 ELECTRICAL SYSTEM:INSTRUMENT PANEL:SPEEDOMETER/ODOMETER Odometer Fraud. The contact’s son recently purchased a 2012 Toyota Prius. The vehicle was a private sale. After the p...
#11697829 ELECTRICAL SYSTEM The hybrid system fails to enter “Ready” mode with no SMR engagement audible from the junction box. Dashboard display...
Check any vehicle history by VIN - Free vehicle history report