2015 Toyota Prius V service brakes problems
11 owner complaints filed with NHTSA name the service brakes on the 2015 Toyota Prius V — 48% of all complaints for this model year.
What owners report
“Emergency Brake, Traction and ABS warning came on and stayed on in addition to a five-second interval cycling on of a motor sound under the hood. O'Reilly Auto Parts and then Toyota dealership confirmed the same code that indicated brake booster assembly needs replacing (C1391) **This is a "known…”
filed Oct 28, 2025
“Brake light + ABS + traction light came on and the brake became harder to control. I was driving in the rain and briefly lost control. Fortunately, no accident.”
filed Jul 7, 2025
“Brakes failing while driving in the rain. I was unable to use my brakes in the rain and headlights turned off while driving too. Took it to the dealer and they won't do anything unless lights are on on dashboard to read the code.”
filed Feb 11, 2025
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Service Brakes problems in other Prius V years
| Year | Reports | Share |
|---|---|---|
| 2014 Prius V | 37 | 46% |
| 2013 Prius V | 64 | 52% |
| 2012 Prius V | 123 | 57% |
Other reported problem areas on the 2015 Toyota Prius V
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.