WenmarOpen by Wenmar Pro

Service bulletins for the 2012 Toyota PRIUS

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.

467 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-0036-162020-08-24. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; HYBRID PROPULSION SYSTEM: INVERTER; ENGINE. TSB: Some 2010 - 2015 model year Prius and 2012 - 2017 model year Prius V vehicles may exhibit a MIL ON condition with Diagnostic Trouble Codes (DTCs) P0A94, P324E, P0A1A, and/or P3004, indicating a malfunction has occurred in the inverter assembly with converter. Follow the Repair Procedure in this bulletin to identify the specific components within the inverter assembly with converter that need to be replaced and address this condition.
TTT043217 Rev12018-12-17. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. TT: Some Customers may complain about a Hybrid Vehicle Battery cooling system warning message. This warning message may appear when the HV Battery cooling system loses efficiency due to debris on the filter and or some object obstructing the air inlet.
TTT0432172018-12-17. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. TT: Some Customers may complain about a Hybrid Vehicle Battery cooling system warning message. This warning message may appear when the HV Battery cooling system loses efficiency due to debris on the filter and or some object obstructing the air inlet.
ZF5-T-SB-0036-162018-06-11. Service bulletin. EQUIPMENT; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. TSB: Some 2010 ? 2014 Prius and 2012 ? 2014 Prius V model vehicles may exhibit a MIL ?ON? condition with DTCs P0A94, P324E, P0A1A, or P3004, indicating a malfunction has occurred in the hybrid inverter assembly. To help identify the specific components within the inverter assembly that need to be replaced, follow the steps in this service bulletin to address the condition.
T-SB-0036-162018-06-11. Service bulletin. ENGINE; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. TSB: Some 2010 ? 2014 Prius and 2012 ? 2014 Prius V model vehicles may exhibit a MIL ?ON? condition with DTCs P0A94, P324E, P0A1A, or P3004, indicating a malfunction has occurred in the hybrid inverter assembly. To help identify the specific components within the inverter assembly that need to be replaced, follow the steps in this service bulletin to address the condition.
T-TT-0395-162018-06-11. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; EQUIPMENT. TT: HV Batteries have liquid filled cell modules, to prevent leakage from cells, it is very important to confirm the proper orientation mark of the DRC.
T-TT-0365-152018-04-23. Service bulletin. EQUIPMENT:ELECTRICAL; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. TT: A vehicle may arrive to the dealer with a MIL ?ON? condition and P0A80 stored in the memory. Some cases have been identified with internal modification done to the HV Battery. Modified or altered parts are not covered under warranty.
T-TT-0362-152018-04-23. Service bulletin. ENGINE; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. TT: The vehicle may be difficult to start or have an abnormally low or rough idle after the battery has been disconnected or power to the Engine ECM has been interrupted.
T-TT-0118-11 Rev2018-04-23. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. technicians should confirm the following key points to minimize the potential for future MIL "ON" concerns after HV Battery Replacement.
T-TT-0086-112018-04-02. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ENGINE. TechTip: Condition - The vehicle may be difficult to start or have an abnormally low or rough idle after the battery has been disconnected or power to the Engine ECM has been interrupted.
T-TT-0118-11 Rev2018-04-02. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Technicians should confirm the following key points to minimize the potential for future MIL "ON" concerns after HV battery replacement.
T-TT-0365-15 Rev2018-04-02. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. TT: A vehicle may arrive to the dealer with a MIL ?ON? condition and P0A80 or P1AC000 stored in the memory. Some cases have been identified with internal modification done to the HV Battery. Modified or altered parts are not covered under warranty.
T-TT-0365-152017-03-28. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. TT: A VEHICLE MAY ARRIVE TO THE DEALER WITH A MIL “ON” CONDITION AND P0A80 STORED IN THE MEMORY. SOME CASES HAVE BEEN IDENTIFIED WITH INTERNAL MODIFICATION DONE TO THE HV BATTERY. MODIFIED OR ALTERED PARTS ARE NOT COVERED UNDER WARRANTY.
T-TT-0363-152017-03-28. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES. TT: VEHICLE MAY ARRIVE AT THE DEALER WITH THE CHARGER CABLE NOT FUNCTIONING. IN SOME CASES THE CABLE IS MODIFIED INTERNALLY. NOTE: THESE TYPES OF MODIFICATIONS WILL VOID THE WARRANTY OF THE CABLE AND HV BATTERY.
T-SB-0119-152017-03-02. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM. TSB: THIS BULLETIN INCLUDES BASIC PROCEDURES FOR PERFORMING A RESCUE CHARGE ON NI-MH HIGH VOLTAGE (HV) BATTERIES. THIS BULLETIN SHOULD BE USED IN CONJUNCTION WITH THE REPAIR MANUAL WHILE PERFORMING RESCUE CHARGE. THE GRX-5100 SHOULD BE USED WHEREVER THE REPAIR MANUAL REFERENCES THE TOYOTA HYBRID SYSTEM (THS) CHARGER.
T-SB-0198-11 REV2016-12-14. Service bulletin. HYBRID PROPULSION SYSTEM; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. TSB: FOR VEHICLES THAT ARE USED UNDER CERTAIN SEVERE OPERATING CONDITIONS, THE HV BATTERY COOLING FAN MAY EXPERIENCE AN EXCESSIVE BUILDUP OF DUST, LINT, OR OTHER DEBRIS THAT CAN REDUCE THE EFFICIENCY OF THE HV BATTERY COOLING SYSTEM. HV BATTERY COOLING FAN MAINTENANCE AND CLEANING SHOULD BE PERFORMED TO ADDRESS THIS CONDITION.
T-TT-0403-162016-12-14. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; HYBRID PROPULSION SYSTEM. TT: SOME PRIUS PHV CUSTOMERS MAY NOTICE A CHANGE IN THE DISPLAYED EV DISTANCE OR HAVE A CONCERN ABOUT THE HV BATTERY PERFORMANCE BASED ON THIS VALUE.
T-TT-0185-122015-04-09. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. TOYOTA PRIUS: CUSTOMERS MAY EXPERIENCE A CHANGE IN THE EV DISTANCE DISPLAY OR MAY HAVE CONCERNS REGARDING THE HV BATTERY PERFORMANCE. *LJ
TSB-0171-132014-03-05. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. TOYOTA: THERE IS A BUILD UP OF DEBRIS, DUST IN HV BATTERY COOLING FAN, AND THE MALFUNCTION INDICATOR LAMP (MIL) ON AND A REPAIR PROCEDURE IS PROVIDED. MODEL 2012-2014 PRIUS V. *PE
TSB-0162-132013-12-30. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. TOYOTA: AN EXCESSIVE BUILD UP OF DUST, LINT, OR OTHER DEBRIS, IN HV BATTERY COOLING FAN, UNDER SEVERE OPERATING CONDITIONS, THAT REDUCES EFFICIENCY OF HV BATTERY COOLING SYSTEM, IN SOME VEHICLES, AND CLEANING AND MAINTENANCE WOULD ADDRESS THIS CONDITION. MODEL 2012-2014 PRIUS V. *PE
TSB-0207-112012-01-25. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. TOYOTA: BULLETIN PROVIDING INFORMATION REGARDING PROPER MAINTENANCE, IF NECESSARY, FOR THE AUXILIARY BATTERY AND HV BATTERY FROM GRADUALLY DECREASING. *PE
TSB-0198-112012-01-23. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN. TOYOTA: BULLETIN PROVIDING INFORMATION ON THE MAINTENANCE AND CLEANING OF EXCESSIVE DUST, LINT, AND/OR OTHER DEBRIS THAT COULD BUILDUP ON HV BATTERY COOLING FAN THAT REDUCES EFFICIENCY OF THE SYSTEM. *PE MODEL 2010-2013 PRIUS. UPDATED 5/14/14. *PE

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