2012 Toyota Prius Technical Service Bulletins

461 technical service bulletins (TSBs) are on record for the 2012 Toyota Prius. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 10142472May 12, 2016Equipment, Electrical system. 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.
• 10140630May 12, 2016Equipment, Electrical system. 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.
• 10140583May 12, 2016Engine, Electrical system. 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.
• 10096904May 12, 2016Hybrid propulsion system, Electrical system. 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.
• 10092981May 12, 2016Hybrid propulsion system, Electrical system. 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.
• 10140582May 11, 2016Electrical system, 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.
• 10092768May 11, 2016Equipment, Electrical system. 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.
• 10140568May 4, 2016Electrical system. TT: Some customers may experience Bluetooth connection issues after updating the Android Operating System to 5.x.x (Lollipop) or later.
• 10092684May 4, 2016Equipment, Electrical system. Tt: some customers may experience bluetooth connection issues after updating the android operating system to 5.x.x (lollipop) or later.
• 10134415Apr 26, 2016Equipment. TT: Some customers may experience Bluetooth connection issues after updating the Android Operating System to 5.x.x (Lollipop) or later.
• 10134414Apr 26, 2016Equipment. TT: When replacing the Hard Disk Drive (HDD) or Navigation Unit (Navi Unit) follow the instructions below.
• 10134388Apr 7, 2016Other or unknown. TSB: Obsolete Notice This bulletin is now obsolete. Please see T-SB-0027-15.
• 10134309Mar 31, 2016Engine cooling. TSB: Some Prius, Prius V, and Prius PHV vehciles may exhibit a rough idle or tapping noise from the HV transaxle at cold start. The Check Engine Light may also illuminate with (DTC) P0401 (Exhaust Gas Recirculation Flow Insufficient Detected). Due to excess carbon build-up at the valve assembly, the valve will stick, causing the engine RPM to fluctuate. Follow the procedures in this bulletin to address the condition.
• 10134238Mar 31, 2016Engine cooling. TSB: Some Prius, Prius V and Prius PHV vehicles may exhibit a vibration due to rough idle and/or tapping noise from the HV transaxle at cold start. The Check Engine Light may also illuminate with (DTC) P0401 (Exhaust Gas Recirculation Flow Insufficient Detected). Due to excess carbon build up at the valve assembly, the valve will stick causing the engine RPM to fluctuate. Follow the procedures in this bulletin to…
• 10096982Mar 31, 2016Engine cooling. Tsb: some prius, prius v, and prius phv vehciles may eexhibvit a rough idle or tapping noise from the hv transaxle at cold start. The check engine light may also illuminate with (dtc) p0401 (exhaust gas recirculation flow insufficient detected). Due to excess carbon build-up at the valve assembly, the valve will stick, causing the engine rpm to fluctuate. Follow the procedures in this bulletin to address the…
• 10134321Mar 8, 2016Electrical system. TT: Since MY 2011, several different update or upgrade USB SSTs have been issued for Toyota audio and navigation systems. Refer to the chart below for a comprehensive list of all current and previously issued USB SSTs and their applicability.
• 10134320Mar 8, 2016Electrical system. TT: Some customers may encounter Bluetooth connectivity concerns such as: ? Difficulty pairing the phone. ? Intermittent Bluetooth failure to connect when first turning on the vehicle. ? Various Bluetooth Audio functions are no longer functioning with the customer?s phone, such as the ability to change the track using the steering wheel controls. These concerns can be caused by changes made on the customer?s phone.
• 10097055Mar 8, 2016Equipment. "tt: since my 2011, several different update or upgrade usb ssts have been issued for toyota audio and navigation systems. Refer to the chart below for a comprehensive list of all current and previously issued usb ssts and their applicability. "
• 10097052Mar 8, 2016Equipment. "tt: some customers may encounter bluetooth connectivity concerns such as: • difficulty pairing the phone. • intermittent bluetooth failure to connect when first turning on the vehicle. • various bluetooth audio functions are no longer functioning with the customer’s phone, such as the ability to change the track using the steering wheel controls. These concerns can be caused by changes made on the customer’s phone.
• 10134281Feb 25, 2016Electrical system. Tech Tip: This Tech Tip is being provided to bring attention to the new location of the Entune/NAV/Map Update and Upgrade USB Directory. Click on the TIS tab, Diagnostics tab, Telematics tab, and the document is now located under the reference documents sections. This change has occurred to help speed up the updating process of this document.
• 10093361Feb 25, 2016Electrical system, Equipment. "tech tip: this tech tip is being provided to bring attention to the new location of the entune/nav/map update and upgrade usb directory. Click on the tis tab, diagnostics tab, telematics tab, and the document is now located under the reference documents sections. This change has occurred to help speed up the updating process of this document. "
• 10134297Feb 16, 2016Equipment. C0G Expired on May 31, 2015.
• 10134296Feb 16, 2016Equipment. C0G Expired on May 31, 2015.
• 10093469Feb 16, 2016Lane departure. C0g expired on may 31, 2015.
• 10093467Feb 16, 2016Lane departure. C0g expired on may 31, 2015.
• 10134140Jan 11, 2016Electrical system. Tech Tip: Some customers may experience difficulty programming HomeLink.
• 10096097Jan 11, 2016Equipment. Tech tip: some customers may experience difficulty programming homelink.
• 10152247Dec 2, 2015Equipment. 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.
• 10093479Dec 2, 2015Electrical 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.
• 10152265Dec 1, 2015Equipment. TT: Since MY 2011, several different update or upgrade USB SST's have been issued for Toyota audio and navigation system. Refer to the chart below for a comprehensive list of all current and previously issued USB SSTs and their applicability.
• 10093540Dec 1, 2015Equipment. "tt: since my 2011, several different update or upgrade usb sst's have been issued for toyota audio and navigation system. Refer to the chart below for a comprehensive list of all current and previously issued usb ssts and their applicability. "
• 10111498Nov 19, 2015Engine cooling. TSB: Some 2010 - 2015 model year Prius (2ZR-FXE equipped) vehicles and 2012 - 2015 model year Prius PHV and Prius V (2ZR-FXE equipped) vehicles may exhibit a "runs rough" and/or MIL "ON" condition with DTC(s) P030# (Misfire) during light acceleration while the Exhaust Gas Recirculation (EGR) system is active. Replace the intake manifold assembly to address this condition.
• 10093949Nov 19, 2015Engine. Tsb: some 2010 – 2015 model year prius (2zr-fxe equipped) vehicles and 2012 – 2015 model year prius phv and prius v (2zr-fxe equipped) vehicles may exhibit a “runs rough” and/or mil “on” condition with dtc(s) p030# (misfire) during light acceleration while the exhaust gas recirculation (egr) system is active. Replace the intake manifold assembly to address this condition.
• 10111490Nov 5, 2015Electrical system, Equipment. TSB: Toyota models equipped with Premium HDD Navigation (AVN/AW-EMV) System will periodically require an update to the Gracenote Database. Gracenote includes detailed information for songs (eg., Genre, Artist, Song, Title, Album Name, etc.). The Gracenote update will be included on the "USB Drive Navigation Map Update" SST. A Gracenote update must be performed before a Navigation Map Update. A Navigation Map Update…
• 10111489Nov 5, 2015Equipment, Electrical system. TSB: 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…
• 10111488Nov 5, 2015Equipment, Electrical system. TSB: Obsolete Notice November 5, 2015: This bulletin is now obsolete. Please see T-SB-0108-15
• 10093871Nov 5, 2015Equipment. Tsb: toyota models equipped with premium hdd navigation (avn/aw-emv) system will periodically require an update to the gracenote database. Gracenote includes detailed information for songs (eg., genre, artist, song, title, album name, etc.). The gracenote update will be included on the "usb drive navigation map update" sst. A gracenote update must be performed before a navigation map update. A navigation map update…
• 10093870Nov 5, 2015Equipment. Tsb: 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…
• 10093784Nov 5, 2015Equipment. Tsb: obsolete notice november 5, 2015: this bulletin is now obsolete. Please see t-sb-0108-15
• 10111486Nov 2, 2015Equipment, Electrical system. TSB: Obsolete Notice November 2, 2015: This bulletin is now obsolete. Please see T-SB-0101-15
• 10111482Nov 2, 2015Equipment, Electrical system. TSB: Toyota models equipped with the Display Audio 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 Card Number (ACN) required for each vehicle. Activation Numbers are provided in an Activation Card Number (ACN) pamphlet available through the…
• 10093781Nov 2, 2015Equipment. Tsb: obsolete notice november 2, 2015: this bulletin is now obsolete. Please see t-sb-0101-15
• 10093774Nov 2, 2015Equipment. Tsb: toyota models equipped with the display audio 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 card number (acn) required for each vehicle. Activation numbers are provided in an activation card number (acn) pamphlet available through the…
• 10111547Oct 13, 2015Equipment. TT: Some customers may experience Bluetooth disconnections or loss of SMS Text Message Functionality on the navigation/audio system with Android phones running OS 4.4 or later. Condition tends to occur to customers who have many previous text messages on their phones.
• 10134227Sep 25, 2015Electrical system, Equipment. 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.
• 10096566Sep 25, 2015Electrical system. 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.
• 10134224Sep 21, 2015Equipment. TT: Since MY 2011, several different update or upgrade USB SSTs have been issued for Toyota audio and navigation systems. Refer to the chart below for a comprehensive list of all current and previously issued USB SSTs and their applicability.
• 10096561Sep 21, 2015Equipment. Tt: since my 2011, several different update or upgrade usb ssts have been issued for toyota audio and navigation systems. Refer to the chart below for a comprehensive list of all current and previously issued usb ssts and their applicability.
• 10134223Sep 15, 2015Engine, Electrical system. 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.
• 10134222Sep 15, 2015Electrical system, Equipment. TT: iPhone text messages do not appear on multimedia dis[play.

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