NHTSA Complaint #11460548 — 2014 FIAT 500L

The contact owns a 2014 FIAT 500L. The contact stated while driving 25 MPH, the vehicle lost motive power but did not stall. The contact stated that after depressing the accelerator pedal the regained motive power. The contact stated that after the vehicle accelerated to 60 MPH the vehicle started to decelerate independently. The contact stated that the service transmission and check engine warning lights were illuminated. The vehicle was taken to an independent mechanic and the contact was informed that the failure was due to a software update that needed to be performed by the dealer. The dealer was contacted and notified of the failure. The contact was informed that there was a software update previously available which had since been closed. The manufacturer was notified of the failure and referred the contact to the NHTSA for assistance. The failure mileage was 75,000.