Service bulletin T-SB-0099-12 Obs

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
Type	Service bulletin
NHTSA id	10179753
Published by NHTSA	2020-09-14
Manufacturer's number	T-SB-0099-12 Obs
Manufacturer's date	2020-08-11
NHTSA component	ELECTRICAL SYSTEM; ENGINE

NHTSA's summary

TSB: OBSOLETE NOTICE August 11, 2020: This bulletin is no longer applicable and is now obsolete.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Engine

Vehicles listed
TOYOTA PRIUS	2011

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
2021723	2021-11-24. Electrical
14V053000	2014-02-12. HYBRID PROPULSION SYSTEM: INVERTER; ELECTRICAL SYSTEM:SOFTWARE

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
T-SB-0009-26	2026-03-07. Service bulletin. 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 applicable model and model year Repair Manual while performing a rescue charge. The GRX-5100 should be used wherever the Repair Manual references the Toyota Hybrid System (THS) charger.
T-SB-0119-15 Rev2	2026-03-07. Service bulletin. OBSOLETE NOTICE February 13, 2026: This bulletin is now obsolete. Please see T-SB-0009-26.
T-PANT-2024-004-	2024-04-15. Service bulletin. This is to advise of various price adjustments that will affect Toyota Genuine Motor Oil and Long Life Coolant, effective March 1, 2024. These products are ordered through the Toyota Complete Maintenance Care (TCMC) website.
23TE03	2023-07-31. Service bulletin. DP: The Customer Confidence Program is a component of a class action settlement that includes several elements of coverage. The Customer Confidence Program provides coverage as it applies to the Intelligent Power Module (IPM). The specific condition covered by this Customer Confidence Program 23TE03 is failure of the IPM located inside the inverter assembly of the hybrid system indicated by DTCs P0A94, P0A1A, P324E, and/or P3004. If any of these DTCs are detected, various warning lamps on the instrument panel will also illuminate and the vehicle will enter Fail Safe Mode.
23TE02	2023-07-31. Service bulletin. DP: The Customer Confidence Program is a component of a class action settlement that includes several elements of coverage. The Customer Confidence Program provides coverage as it applies to the intelligent power module (IPM). The specific condition covered by this Customer Confidence Program 23TE02 is failure of the IPM located inside the inverter assembly of the hybrid system indicated by DTCs P0A7A and/or P0A78. If either of these DTCs are detected, various warning lamps on the instrument panel will also illuminate and the vehicle will enter Fail Safe Mode. Toyota will also provide coverage if the IPM has failed due to a thermal event regardless of what DTC is detected, or if the IPM has failed and the failure cannot be demonstrated to be due to anything other than a thermal event.
T-SB-0057-18	2023-06-26. Service bulletin. TSB: The Immobilizer and Smart Key Reset is a feature that allows the registration of new keys when all master keys are lost. Once the system is reset, all previously registered keys will be erased. Follow the procedures in this bulletin to reset a vehicle Immobilizer or Smart Key system.
23TE03	2023-05-01. Service bulletin. DP: The Customer Confidence Program is a component of a class action settlement that includes several elements of coverage. The Customer Confidence Program provides coverage as it applies to the Intelligent Power Module (IPM). The specific condition covered by this Customer Confidence Program 23TE03 is failure of the IPM located inside the inverter assembly of the hybrid system indicated by DTCs P0A94, P0A1A, P324E, and/or P3004. If any of these DTCs are detected, various warning lamps on the instrument panel will also illuminate and the vehicle will enter Fail Safe Mode.
23TE02-1	2023-05-01. Service bulletin. DP: The Customer Confidence Program is a component of a class action settlement that includes several elements of coverage. The Customer Confidence Program provides coverage as it applies to the intelligent power module (IPM). The specific condition covered by this Customer Confidence Program 23TE02 is failure of the IPM located inside the inverter assembly of the hybrid system indicated by DTCs P0A7A and/or P0A78. If either of these DTCs are detected, various warning lamps on the instrument panel will also illuminate and the vehicle will enter Fail Safe Mode. Toyota will also provide coverage if the IPM has failed due to a thermal event regardless of what DTC is detected, or if the IPM has failed and the failure cannot be demonstrated to be due to anything other than a thermal event.
TSB000321	2023-05-01. Service bulletin. 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.
TSB001123	2023-05-01. Service bulletin. 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) P0A7A and/or P0A78, 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.