The 2015 Toyota Prius has 1 NHTSA recall campaign affecting an estimated 266,638 vehicles. Recall repairs are always free at any authorized dealer. Owners have filed 210 complaints with NHTSA, most often about the service brakes. Last updated July 5, 2026.
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2013-2015 Prius and 2014-2017 Prius V vehicles not included in recall 18V-684. Excessive voltage in the Intelligent Power Module (IPM) within the inverter may cause the hybrid system to shut down, causing the vehicle to stall while being driven.
Consequence
An unexpected hybrid power system shut down may increase the risk of a crash.
Remedy
Toyota will notify owners, and dealers will perform a software update for the hybrid system. If the vehicle has experienced an inverter failure with certain hybrid system faults related to this condition, the inverter assembly will be repaired or replaced, prior to software update. All repairs will be performed…
Verbatim reports filed with NHTSA, lightly edited for readability and with personal
information removed.
“The vehicle experienced a failure in the braking system involving the brake booster/brake actuator assembly. The vehicle displayed diagnostic trouble code c1391, which is associated with a malfunction of the brake booster pump/accumulator system on this model. The failed component is available for…”
“The contact owns a 2015 toyota prius. The contact stated that while driving and coming to a complete stop, the vehicle was rear-ended by another vehicle driving approximately 35-45 mph. The contact stated that upon impact, the front driver's seat unexpectedly reclined and struck the rear…”
“The contact owns a 2015 toyota prius. The contact stated that while driving at 45 mph, the brake warning lights illuminated. The brakes were inoperable and entered manual mode. The contact stated that the brake warning lights were red and yellow. The vehicle was taken to brake masters, where it…”
“I was driving my 2015 prius for years and occasionally the brake, abs and traction light would come on this is a sign of a failing brake actuator and booster. Toyota and the ntsb ordered the following warranty enhancement https://static.nhtsa.gov/odi/tsbs/2020/mc-10181800-9999.pdf my brake booster…”
“Code c1391 200k miles all the warning signs for brake booster issue came up. The cost is too high and I just missed the customer support program timelines because the code came up late. This needs to be a recall, based on how many people experience this issue consistently.”
“Code c1391 200k miles all the warning signs for brake booster issue came up. The cost is too high and I just missed the customer support program timelines because the code came up late. This needs to be a recall, based on how many people experience this issue consistently.”
“Abs braking system suddenly not working. Abs, brake, and traction control lights all turned on.”
“Toyota prius has a known problem with the brake actuator and booster. A notice was sent out in 2019 under the customer support program expansion with repairs up to 10 years or 150k miles. This is a safety issue and should be covered under a recall with no time or mileage limits since these…”
Defect investigations
InvestigationDP19004 Opened 2019-09-30 · closed 2021-01-21
Brake Actuator Valve Wear
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…
InvestigationDP22005 Opened 2023-01-27 · closed 2023-08-07
Pedestrian alert sounds
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…
InvestigationDP23005 Opened 2023-11-22 · open
Brake Actuator Valve Wear
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…
InvestigationDP23005 Opened 2023-11-22 · open
Brake Actuator Valve Wear
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…
Recall, complaint, and investigation records from official NHTSA datasets (FLAT_RCL,
FLAT_CMPL, FLAT_INV), synced weekly. Counts reflect NHTSA records for the 2015 Toyota Prius as of
July 5, 2026. Complaint narratives are consumer-submitted and unverified. This page
contains ads and affiliate links. Full methodology.