WenmarOpen by Wenmar Pro

Service bulletins for the 2016 Toyota Mirai

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

198 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Only bulletins with component: 12-volt battery are shown. Show all

Bulletins, newest first
T-SB-0074-202020-09-14. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN. TSB: Some 2003 ? 2020 model year Prius, Prius C, Prius V; 2006 ? 2019 model year Highlander Hybrid Vehicle; 2007 ? 2020 Camry Hybrid Vehicle; 2013 ? 2020 model year Avalon Hybrid Vehicle; 2016 ? 2020 model year Mirai and RAV4 Hybrid Vehicle; and 2020 model year Corolla Hybrid Vehicles may exhibit a MIL ON condition with Diagnostic Trouble Codes (DTCs) P0A80/P1AC000 and/or P0A7F/P1A8000 stored due to dust or debris buildup in the HV battery cooling fan and/or HV cooling filter. Follow the procedure in this bulletin to address this condition.
T-SB-0087-14 Rev2017-08-14. Service bulletin. HYBRID PROPULSION SYSTEM; ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY. TSB: Prius and Mirai vehicles are equipped with 2 types of batteries: * Hybrid Vehicle (HV) battery * 12-volt auxiliary battery If Prius or Mirai vehicles are 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. Please perform the following maintenance service for the HV battery and 12-volt 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 12-volt auxiliary battery disconnected. * If the negative (-) terminal of the auxiliary battery is reconnected, even if the power button is in the "START" mode, the hybrid/fuel cell system may NOT start. In this case, push the "POWER" button and select the "START" mode again to start the hybrid/fuel cell system (the "READY" light is ON). If the hybrid/fuel cell system still does NOT start (the "READY" light is OFF), refer to the Repair Manual.
T-SB-0124-152017-03-02. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM. "A BATTERY IN A STORED VEHICLE IS SUBJECT TO CONDITIONS THAT CAN REDUCE ITS PERFORMANCE AND LIFE. THESE CONDITIONS INCLUDE STORAGE PERIOD, TEMPERATURE, PARASITIC DRAIN, AND BATTERY LOAD. BECAUSE OF THESE FACTORS, BATTERY INSPECTION AND MAINTENANCE ARE REQUIRED IN ORDER TO ENSURE PROPER OPERATION AND OPTIMAL BATTERY LIFE. AS A MATTER OF POLICY, TOYOTA DOES NOT PROVIDE BATTERY WARRANTY COVERAGE FOR DISCHARGED AND/OR FAILED BATTERIES DUE TO LACK OF MAINTENANCE. IT IS THE DEALER’S RESPONSIBILITY TO MAINTAIN THE SPECIFIED STATE OF CHARGE (SOC) OF THE VEHICLE’S BATTERY WHILE IN STOCK AND ASSURE PROPER STATE OF CHARGE (SOC) AT DELIVERY. TO ELIMINATE CUSTOMER SERVICE CONCERNS DUE TO AN UNDERCHARGED BATTERY DURING THE FIRST FEW WEEKS OF OWNERSHIP, ALL DEALERS SHOULD CHECK BATTERY STATE OF CHARGE (SOC) AND RECHARGE, IF NECESSARY, WITHIN 48 HOURS OF DELIVERY TO CUSTOMERS."

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.