January 15, 2020 Service bulletin

Revision notice

Lexus technical service bulletin L-SB-0012-19_Rev for 2020 Lexus IS 300 and 2020 Lexus LS Hybrid.

Bulletin number: L-SB-0012-19_Rev
Component: Electrical system
Summary: TSB: REVISION NOTICE January 15, 2020 Rev1: ? The entire bulletin has been updated. 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 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 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.

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