TSB: SERVICE ACTION: ECU UPGRADE: BMS (BATTERY MANAGEMENT SYSTEM) LOGIC IMPROVEMENT (SA297) - This bulletin provides information related to the BMS (Battery Management System) software upgrade for some Soul EV (PS EV) vehicles produced from July 15, 2014 through May 15, 2016, which may experience an inoperative reserved climate control system (set climate pre-conditioning times) when the vehicle is stored at low temperatures without power-on for a certain period of time.
