NHTSA owner reports · September 18, 2026 snapshot.
Service Brakes, Hydraulic complaints
8 reportsClear category filter140,000 miles · Sep 10, 2026
Service Brakes, HydraulicVehicle Speed ControlCrashInjury
The contact owns a 2013 Toyota Prius. The contact stated that while driving 60 MPH, the ABS warning light illuminated. Minutes later, the vehicle started to brake and lurch forward with the accelerator pedal depressed. The contact stated that the vehicle spun out and crashed into the median. The contact’s chest struck the steeri…
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The contact owns a 2013 Toyota Prius. The contact stated that while driving 60 MPH, the ABS warning light illuminated. Minutes later, the vehicle started to brake and lurch forward with the accelerator pedal depressed. The contact stated that the vehicle spun out and crashed into the median. The contact’s chest struck the steering wheel, causing bruising and chest pain. The contact was managing the pain with analgesics. The vehicle was towed to an impound lot and was deemed a total loss by the insurance company. A Police report was filed, but the report number was not provided. The manufacturer was contacted and was made aware of the failure. The failure mileage was approximately 140,000.
NHTSA ODI #11763340
120,000 miles · Aug 13, 2026
Service Brakes, Hydraulic
The contact owns a 2013 Toyota Prius. The contact stated that while driving at an undisclosed speed, the ABS, traction control, and BRAKE warning lights were illuminated. The contact pulled off on the off-ramp and became aware that extra effort was needed to depress the brake pedal. The vehicle was towed to the dealer and was di…
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The contact owns a 2013 Toyota Prius. The contact stated that while driving at an undisclosed speed, the ABS, traction control, and BRAKE warning lights were illuminated. The contact pulled off on the off-ramp and became aware that extra effort was needed to depress the brake pedal. The vehicle was towed to the dealer and was diagnosed with brake booster and accumulator failure. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 120,000.
NHTSA ODI #11756742
65,000 miles · Jan 26, 2026
Service Brakes, Hydraulic
The contact owns a 2013 Toyota Prius. The contact stated that while coming to a stop, the brake pedal was depressed; however, the vehicle unexpectedly lunged forward. The ABS warning light and other unknown warning lights were illuminated. The dealer was contacted. The vehicle was not diagnosed or repaired. The manufacturer was …
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The contact owns a 2013 Toyota Prius. The contact stated that while coming to a stop, the brake pedal was depressed; however, the vehicle unexpectedly lunged forward. The ABS warning light and other unknown warning lights were illuminated. The dealer was contacted. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 65,000.
NHTSA ODI #11713353
140,000 miles · Sep 30, 2025
Service Brakes, Hydraulic
The contact owns a 2013 Toyota Prius. The contact stated that upon parking the vehicle, the vehicle made an abnormal sound every 30-seconds. The contact stated the vehicle then stopped making the sound. The ABS warning light, the traction control warning light, and other unknown warning lights were illuminated. The vehicle was t…
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The contact owns a 2013 Toyota Prius. The contact stated that upon parking the vehicle, the vehicle made an abnormal sound every 30-seconds. The contact stated the vehicle then stopped making the sound. The ABS warning light, the traction control warning light, and other unknown warning lights were illuminated. The vehicle was taken to an independent mechanic, where it was diagnosed. The mechanic determined that the brake actuator and the ABS module needed to be replaced. The vehicle was not repaired. An unknown dealer was contacted for parts information. The manufacturer was not notified of the failure. The failure mileage was approximately 140,000.
NHTSA ODI #11690529
119,000 miles · Jul 25, 2025
Service Brakes, Hydraulic
The contact owns a 2013 Toyota Prius. The contact stated there was a constant beeping sound while attempting to depress the brake pedal while slowing down. Additionally, the brake pedal was very firm, requiring added for to be depressed. The vehicle was taken to a local dealer to be diagnosed, and the contact was informed that t…
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The contact owns a 2013 Toyota Prius. The contact stated there was a constant beeping sound while attempting to depress the brake pedal while slowing down. Additionally, the brake pedal was very firm, requiring added for to be depressed. The vehicle was taken to a local dealer to be diagnosed, and the contact was informed that the brake booster assembly, brake master cylinder, and the brake booster pump were faulty and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 119,000.
NHTSA ODI #11676207
Mileage unknown · Apr 28, 2025
Service Brakes, Hydraulic
The contact owns a 2013 Toyota Prius. The contact stated while driving at approximately 25 MPH and depressing the brake pedal to slow for a traffic sign, the vehicle was not slowing down. The contact pumped the brake pedal several times before the vehicle slowed down. The contact stated that an unknown warning light was illumina…
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The contact owns a 2013 Toyota Prius. The contact stated while driving at approximately 25 MPH and depressing the brake pedal to slow for a traffic sign, the vehicle was not slowing down. The contact pumped the brake pedal several times before the vehicle slowed down. The contact stated that an unknown warning light was illuminated. The contact had the vehicle towed to a local dealer, where it was diagnosed and determined that the brake booster and brake actuator had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was not informed of the failure. The failure mileage was unknown.
NHTSA ODI #11657226
Mileage unknown · Aug 30, 2023
Service Brakes, Hydraulic
The contact owns a 2013 Toyota Prius. The contact stated that while driving at an undisclosed speed, he depressed the brake and heard an unusual sound, and the brakes was inoperable. The contact stated he was able to slow the vehicle down and stop by continuing to depress the brake. The contact stated that when the failure occur…
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The contact owns a 2013 Toyota Prius. The contact stated that while driving at an undisclosed speed, he depressed the brake and heard an unusual sound, and the brakes was inoperable. The contact stated he was able to slow the vehicle down and stop by continuing to depress the brake. The contact stated that when the failure occurred, the ABS system, brake system, traction control, and an unknown warning light was illuminated. The contact stated that the failure had been reoccurring for a year. The vehicle was taken to the dealer, where it was diagnosed with brake booster failure, and the dealer provided the contact with the phone number for the Manufacturer. The vehicle was not repaired. The manufacturer was made aware of the failure, and the manufacturer informed the contact that the Extended Warranty had expired on the ABS/Brake Booster. The failure mileage was approximately 175,000.
NHTSA ODI #11541751
141,000 miles · Mar 13, 2023
Service Brakes, Hydraulic
The contact owns a 2013 Toyota Prius. The contact stated while driving 30 MPH, the brakes, ABS, and an unknown warning light were illuminated. The brake pedal was depressed but the vehicle failed to respond. The contact depressed the brake pedal to the floorboard and the brake pedal responded. The contact stated that there was a…
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The contact owns a 2013 Toyota Prius. The contact stated while driving 30 MPH, the brakes, ABS, and an unknown warning light were illuminated. The brake pedal was depressed but the vehicle failed to respond. The contact depressed the brake pedal to the floorboard and the brake pedal responded. The contact stated that there was a 30-foot stopping distance delay. The contact veered to the side of the road. The vehicle was taken to the dealer. The vehicle was not diagnosed nor repaired. The dealer informed the contact that the vehicle could not be repaired under a warranty that was expired. The vehicle was taken back to the residence. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 141,000.
NHTSA ODI #11511590
NHTSA investigations
3DP23005 · Brake Actuator Valve Wear
Opened Nov 22, 2023 · No close date supplied
Status: open (inferred from source dates) · Service Brakes, Hydraulic:foundation Components; Service Brakes, Hydraulic:power Assist
The Office of Defects Investigation (ODI) has received a petition dated September 19, 2023 from the owner of a 2012 Toyota Prius V requesting that ODI reevaluate its decision to deny DP19-004. In the letter, the petitioner reported experiencing an unexpected and complete loss of brake power while driving, accompanied by multiple dashboard warning lights. This petition is based on the petitioner's direct experience and assessment that ODI closed DP19-004 because its prompting petition was withdrawn by that petitioner. ODI will review the work conducted during DP19-004 and a review of any additional related complaints and crashes via a new defect petition The petition and related materials can be reviewed at NHTSA.gov under the following ODI number:11553736.
Additional source detail variants (2)
Service Brakes, Hydraulic:foundation Components
The Office of Defects Investigation (ODI) has received a petition dated September 19, 2023 from the owner of a 2012 Toyota Prius V requesting that ODI reevaluate its decision to deny DP19-004. In the letter, the petitioner reported experiencing an unexpected and complete loss of brake power while driving, accompanied by multiple dashboard warning lights. This petition is based on the petitioner's direct experience and assessment that ODI closed DP19-004 because its prompting petition was withdrawn by that petitioner. ODI will review the work conducted during DP19-004 and a review of any additional related complaints and crashes via a new defect petition The petition and related materials can be reviewed at NHTSA.gov under the following ODI number:11553736.
Service Brakes, Hydraulic:power Assist
The Office of Defects Investigation (ODI) has received a petition dated September 19, 2023 from the owner of a 2012 Toyota Prius V requesting that ODI reevaluate its decision to deny DP19-004. In the letter, the petitioner reported experiencing an unexpected and complete loss of brake power while driving, accompanied by multiple dashboard warning lights. This petition is based on the petitioner's direct experience and assessment that ODI closed DP19-004 because its prompting petition was withdrawn by that petitioner. ODI will review the work conducted during DP19-004 and a review of any additional related complaints and crashes via a new defect petition The petition and related materials can be reviewed at NHTSA.gov under the following ODI number:11553736.
DP22005 · Pedestrian Alert Sounds
Opened Jan 27, 2023 · Closed Aug 7, 2023
Status: closed (inferred from source dates) · Electrical System:propulsion System
NHTSA received a petition on or about July 18, 2022, requesting that Federal Motor Vehicle Safety Standard (FMVSS) 141 be applied to all electric and hybrid vehicles operating in the United States. The petition can be reviewed at NHTSA.gov under ODI Number 11486072. FMVSS 141 establishes performance requirements for pedestrian alert sounds for motor vehicles. The standard applies to hybrid and electric vehicles that have a gross vehicle weight rating of 4,536 KG or less or are defined as low-speed vehicles. The standard became fully applicable to all such vehicles manufactured on or after March 1, 2021.On January 27, 2023, NHTSA opened Defect Petition (DP) 22-005 to evaluate the subject matter described in the petition. On June 24, 2023 and as supplemented on June 25, 2023, the petitioner notified NHTSA he was withdrawing his petition. The petitioner indicated that, based on his review of data, there is no justification for asserting potential benefits that could be derived from actions sought by my petition. Based on the petitioner's withdrawal, DP22-005 is closed. Closure of this DP does not represent a determination by NHTSA regarding the subject matter of the petition.
DP19004 · Brake Actuator Valve Wear
Opened Sep 30, 2019 · Closed Jan 21, 2021
Status: closed (inferred from source dates) · Service Brakes, Hydraulic:power Assist
On September 19, 2019, the Office of Defects Investigation (ODI) received a defect petition from Mr. Roger Hogan requesting that the Agency investigate and recall certain Toyota Prius, Prius PHV, Camry Hybrid and Avalon Hybrid vehicles for a brake actuator valve wear condition covered under Toyota Customer Support Programs ZJB and ZKK (subject CSP?s). In support of his request, the petitioner identified 117 NHTSA complaints allegedly related to the subject CSP condition, including 60 reporting crashes. On September 30, 2019, ODI opened Defect Petition DP19-004 to evaluate the petitioner?s request for an investigation. In August 2020, the petitioner notified the Agency that he was withdrawing his petition. Because the petitioner has withdrawn the petition, we are denying the petition as moot and no further analysis of this petition is necessary.NHTSA is authorized to issue an order requiring notification and remedy of a defect if the Agency?s investigation shows a defect in the design, construction, or performance of a motor vehicle that presents an unreasonable risk to safety. 49 U.S.C. ?? 30102(a)(9), 30118. Because the petitioner has with withdrawn the petition, the petition is denied as moot. This action does not constitute a finding by NHTSA that a safety-related defect does not exist. The Agency notes that it is not required to receive a defect petition prior to opening a defect investigation and will take further action if warranted by future circumstances.