The contact owns a 2014 Toyota Prius V. The contact stated that the vehicle was previously involved in two car crashes, where the vehicle rear-ended other vehicles due to the brakes failure. The air bags did not deploy. A police report was filed after the second crash, but the information was not available. The contact stated that the other driver sustained unknown injuries during the second crash. The vehicle sustained damages and was repaired. There was no further information provided. Additionally, the contact stated while driving at various speeds and depressing the brake pedal, the brakes made an abnormal sound and the brake pedal was spongy. The contact stated that the vehicle hesitated to respond. The ABS warning light and several unknown warning lights were illuminated. The vehicle was taken to the dealer, where it was diagnosed that the brake booster had failed and needed to be replaced. The dealer informed the contact that it was a known failure; however, the repair could not be covered because the vehicle had a salvage title. The vehicle was not repaired. The manufacturer was notified of the failure and a case was opened. The failure mileage was approximately 120,000.