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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.

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Bulletins, newest first
T-SB-0012-132018-04-23. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. Flash reprogramming allows the ECU software to be updated without replacing the ECU. Flash calibration updates for specific vehicle models/ECUs are released as field-fix procedures described in individual Service Bulletins. This bulletin details the Techstream ECU flash reprogramming process and outlines use of the TIS and the CUW.
T-SB-0093-12 Rev2018-04-23. Service bulletin. EQUIPMENT:ELECTRICAL. Three NEW application have been developed to enhance the Entune experience in vehicles equipped with the Display Audio Navigation System with Entune. All customers with these vehicles have been shipped instructions on this update along with a USB drive to install the new applications. In the event that a customer requests the install be performed by a technician, follow the procedures in this bulletin to perform the update.
T-SB-0026-12 Rev2018-04-23. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. Use the following procedures to check and/or update the software version of Entune/Navigation for Non-HDD Type Units.
T-SB-0030-12 Rev2018-04-23. Service bulletin. EQUIPMENT:ELECTRICAL. Vehicles equipped with a Display Audio Navigation System and Entune (version less than 2.1.0) may exhibit one or more of the following conditions.
T-SB-0007-132018-04-23. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. Toyota models equipped with the Premium HDD Navigation (AVN/AW-EMV) System require a Special Service Tool (SST) USB drive to update the map, points of interest, Gracenote® and system software. The SST is used with all vehicles to deliver the update, however a unique Activation Number is required for each vehicle. Activation Numbers are provided in an Activation Card Number (ACN) pamphlet available through the normal parts ordering system. Use the process described in this bulletin to perform the update.
T-SB-0006-132018-04-23. Service bulletin. ELECTRICAL SYSTEM. Toyota models equipped with the Premium HDD Navigation (AVN/AW-EMV) System will periodically require an update to the Gracenote® Database. Gracenote® includes detailed information for songs (i.e. Genre, Artist, Song Title, Album Name, etc.). The Gracenote® update will be included on the ?USB Drive ? Navigation Update? SST. A Gracenote® update must be performed before a Navigation Map Update. A Navigation Map Update is not required to complete the Gracenote® update. Use the process described in this bulletin to perform the update.
T-SB-0005-132018-04-23. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. Toyota models equipped with the display Audio HDD Navigation System Require a Special Service Tool (SST) USB drive to update the map, points of interest, Gracenote, and system software. The SST is used with all vehicles to deliver the update, however a unique Activation Number is required for each vehicle. Activation numbers are provided in an ACN pamphlet available through the normal parts ordering system.
T-SB-0064-10 Rev2018-04-23. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. Flash reprogramming allows the ECU software to be updated without replacing the ECU. Flash calibration updates for specific vehicle models/ECUs are released as field-fix procedures described in individual Service Bulletins. This bulletin details the Techstream ECU flash reprogramming process and outlines use of the Technical Information System (TIS) and the Calibration Update Wizard (CUW). Flash calibration updates can only be applied to the vehicle/ECU combination for which they are intended. ECUs have internal security that will not allow them to be programmed with another ECU?s information.
Toyota Exhaust G2018-04-23. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. On certain 2011 and 2012 model year Prius and Highlander HV vehicles, there is a possibility that the exhaust gas control actuator may develop a coolant leak. If a coolant leak occurs, the Water Temp indicator Lamp and Check engine Lamp will illuminate
SST Requirements2018-04-23. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. SSTs are key elements to provide your customers with swift and accurate repairs resulting in superior customer satisfaction.
T-TT-0226-132018-04-23. Service bulletin. ELECTRICAL SYSTEM. The customer is having difficulty changing the multi-display screen from Day Mode. If the multi-display screen is set to Day Mode when the headlights are on, the setting we be memorized when the engine is turned off.
T-TT-0222-132018-04-23. Service bulletin. STEERING: STEERING WHEEL/HANDLE BAR. The vehicle will not start or ready-on and the steering wheel lock is engaged so that the steering wheel may only be turned very little from side-to-side.
T-SB-0035-132018-04-23. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Some 2012 model year Corolla, Prius, Prius V, Sienna, and Venza vehicles may set SRS Diagnostic Trouble Codes (DTCs) that are not listed in the Repair Manual. Refer to the chart in this bulletin to diagnose these DTCs.
T-SB-0391-08 Rev2018-04-23. Service bulletin. POWER TRAIN. This bulletin contains general vehicle pulling diagnosis and repair procedures along with specific information to help correct pulling complaints.
T-SB-0033-132018-04-23. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Some customers may inquire about the frequency and power output of the Smart Key/Smart Entry systems used on various models. The Smart Key/Smart Entry systems conform to all applicable FCC rules. This bulletin details the applicable specifications for these systems.
Renotification (2018-04-23. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Toyota will be sending Safety Recall Follow Up Notices to remind owners whose vehicles have not yet had campaign repair completed. Please note the following information for Regional and PD associates.
Renotification (2018-04-23. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Toyota will be sending Safety Recall Follow Up Notices to remind owners whose vehicles have not yet had campaign repair completed. Please note the following information for Regional and PD associates.
Prius LKA Follow2018-04-23. Service bulletin. LANE DEPARTURE: LANE KEEP: STEERING ASSIST. On your 2012 model year Prius vehicle, the Lane-Keeping Assist (LKA) system may not activate the lane departure warning (beep) when the vehicle begins to deviate from the marked lane. All other features of the LKA system operate as designed.
T-TT-0005-102018-04-23. Service bulletin. ENGINE. Starting with 2010 Model Year, Toyota began a gradual transition to the use of synthetic 0W-20 viscosity engine oil. There a re man benefits of this oil.
T-SB-0030-12 Rev2018-04-23. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin is now obsolete. Please see T-SB-0051-13.
T-SB-0051-132018-04-23. Service bulletin. EQUIPMENT:ELECTRICAL. 2012-2013 model year vehicles equipped with a Display Audio Navigation System and Entune (version less than 2.2.0) may exhibit one or more of the following conditions.
T-SB-0103-12 Rev2018-04-23. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE. Some 2010 ? 2015 model year Prius, 2012 ? 2015 Prius PHV, and 2012 ? 2016 Prius V vehicles equipped with a 2ZR-FXE engine may exhibit a MIL ?ON? condition with Diagnostic Trouble Codes (DTCs) P2111 (Throttle Actuator Control System) and P0A0F (Engine Failed to Start) present when ambient temperatures are below 23 F (?5 C). The intake manifold assembly has been improved to address this condition.
E0A Region Notic2018-04-23. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. In late April 2014, Toyota will be mailing an update to the Owner?s Manual for certain 2010 through 2013 Model Year Prius Plug-in Hybrid Vehicles (PHV) and certain 2012 through 2013 RAV4 Electric Vehicles (EV). Sample Owner Letter labels are provided below for your reference.
T-SB-0229-12_Rev2018-04-23. Service bulletin. ELECTRICAL SYSTEM. TSB: REVISION NOTICE November 22, 2017 Rev1: ? Applicability has been updated to include 2014 ? 2018 model year vehicles. Any previous printed versions of this bulletin should be discarded. In the event that a Toyota vehicle becomes submerged in water, many components may be physically damaged. Electrical and electronic components, including wiring harnesses, are particularly susceptible to corrosion and subsequent malfunction. Although any flooding can be damaging, salt water flooding elevates the potential for abnormal conditions and may increase risks due to its highly corrosive and conductive nature. Salt residue also continues to corrode and remain conductive even after a vehicle dries. This bulletin is intended to assist with safe handling and inspection of flood damaged vehicles and to provide basic guidance on likely needed repairs.
T-SB-0133-14_Obs2018-04-23. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). TSB: OBSOLETE NOTICE November 16, 2017: This bulletin is now obsolete. Please see T-SB-0294-17.

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