TSB: REVISION NOTICE May 10, 2018 Rev1: * Applicability has been updated to include 2019 model year vehicles. Any previous printed versions of this bulletin should be discarded. Hybrid vehicles are equipped with two types of batteries: * Hybrid Vehicle (HV) battery - Auxiliary (12V) battery If the vehicle is put into storage, the State-Of-Charge (SOC) of its HV battery and auxiliary battery will gradually decrease. To prevent the auxiliary battery from becoming discharged during storage, proper maintenance is necessary. Perform the following maintenance service for the HV battery and 12V auxiliary battery. NOTE * Before disconnecting the auxiliary battery, confirm the shift lever is in the "P" position and apply the parking brake completely. The shift lever cannot be shifted from the "P" position with the 12V auxiliary battery disconnected. * If the negative (-) terminal of the auxiliary battery is reconnected, even if the power switch is selected to the Start mode, the hybrid system may not start. In this case, push the Power switch to select Start again to start the hybrid system (the Ready light is ON). If the hybrid system still does not start (the Ready light is OFF), refer to the Repair Manual. * If the vehicle is equipped with VGRS, the system must be initialized after the auxiliary battery has been reconnected. Refer to the applicable Service Bulletin for instructions.