2012 Toyota Corolla Technical Service Bulletins

350 technical service bulletins (TSBs) are on record for the 2012 Toyota Corolla. 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.

• 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.
• 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. "
• 10116439Jan 15, 2016Electrical system. Discusses Southeast Toyota Accessory Keyless Entry system General trouble shooting and revised control module identification.
• 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. "
• 10111486Nov 2, 2015Electrical system, Equipment. 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…
• 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, 2015Electrical system, Engine. 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.
• 10096556Sep 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.
• 10096555Sep 15, 2015Equipment. Tt: iphone text messages do not appear on multimedia dis[play.
• 10134220Sep 14, 2015Equipment, Electrical system. TT: Customers may experience connectivity issues when the following conditions are met: The customer's iPhone is operating on iOS9 firmware. The customer's iPhone is connected to the vehicle via Bluetooth. The customer may complain of the following issues: When receiving two incoming calls simultaneously, both calls are ended automatically. iTunes Radio app does not play via Bluetooth audio. Podcast and Audiobook…
• 10096550Sep 14, 2015Equipment. Tt: customers may experience connectivity issues when the following conditions are met: the customer's iphone is operating on ios9 firmware. The customer's iphone is connected to the vehicle via bluetooth. The customer may complain of the following issues: when receiving two incoming calls simultaneously, both calls are ended automatically. Itunes radio app does not play via bluetooth audio. Podcast and audiobook…
• 10134454Aug 24, 2015Transmission and drivetrain. 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.
• 10132529Aug 24, 2015Engine, Electrical system. 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.
• 10134432Aug 19, 2015Electrical system. TSB: Use the following procedures to check and/or update the software version of Entune/Navigation for Non-HDD Type units.
• 10134431Aug 19, 2015Equipment. TSB: Some 2012 model year 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: ? Vehicle orientation slow to update after vehicle startup ? Five Bing? search results are not all displayed on the map ? Voice recognition destination request does not provide feedback ? Voice recognition for POI search displays ?Function not…
• 10132507Aug 19, 2015Equipment. TSB: Use the following procedures to check and/or update the software version of Entune/Navigation for Non-HDD Type units.
• 10132506Aug 19, 2015Equipment. TSB: Some 2012 model year 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: ? Vehicle orientation slow to update after vehicle startup ? Five Bing? search results are not all displayed on the map ? Voice recognition destination request does not provide feedback ? Voice recognition for POI search displays ?Function not…
• 10111424Aug 19, 2015Equipment, Electrical system. TSB: August 19, 2015: This bulletin is now obsolete. Please see T-SB-0061-15
• 10096612Aug 9, 2015Equipment. Tsb: august 19, 2015: this bulletin is now obsolete. Please see t-sb-0061-15
• 10111416Jul 23, 2015Equipment. 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. NOTE: There are new security provisions required to obtain a Reset Pass-Code. It is critical that the instructions for this new…
• 10111126Jul 23, 2015Equipment. 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. NOTE: There are new security provisions required to obtain a Reset Pass-Code. It is critical that the instructions for this new…
• 10111304Jun 17, 2015Equipment. TT: iPhone text messages do not appear on multimedia display.
• 10111154Jun 17, 2015Equipment, Electrical system. TT: iPhone text messages do not appear on multimedia display.
• 10134479May 22, 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.
• 10132581May 22, 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.
• 10111562May 13, 2015Equipment. TSB: The procedure in this bulletin is a general guideline on how to properly diagnose the air conditioning system after a component failure. Refer to the applicable Repair Manual for vehicle specific repair procedures and parts.
• 10111179May 13, 2015Equipment. TSB: The procedure in this bulletin is a general guideline on how to properly diagnose the air conditioning system after a component failure. Refer to the applicable Repair Manual for vehicle specific repair procedures and parts.
• 10134476May 8, 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.
• 10132578May 8, 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.
• 10111407Apr 30, 2015Electrical system, Equipment. TT: When updating either the navigation or radio firmware, verify the vehicle applicability BEFORE beginning the update.
• 10111214Apr 30, 2015Electrical system, Equipment. TT: When updating either the navigation or radio firmware, verify the vehicle applicability BEFORE beginning the update.
• 10111394Apr 27, 2015Engine cooling. TSB: Some 2006 - 2013 model year vehicles equipped with 2AZ-FE or 2AZ-FXE engines may exhibit engine oil consumption. The piston assembly has been changed to minimize oil consumption. Use the Inspection Procedure in this bulletin to confirm this condition.
• 10111201Apr 27, 2015Engine cooling. TSB: Some 2006 - 2013 model year vehicles equipped with 2AZ-FE or 2AZ-FXE engines may exhibit engine oil consumption. The piston assembly has been changed to minimize oil consumption. Use the Inspection Procedure in this bulletin to confirm this condition.
• 10111405Apr 17, 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.
• 10111212Apr 17, 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.
• 10111390Apr 10, 2015Electrical system. TSB: When servicing interior electrical switches and components, please note the precautions in this bulletin to avoid damaging electrical components and switches. Many lubricants, cleaners, and automotive chemicals contain silicone or other compounds that may contaminate electrical contacts, and therefore increase electrical resistance and decrease switch performance. The use of any cleaners or fluids may increase…
• 10111197Apr 10, 2015Electrical system, Equipment. TSB: When servicing interior electrical switches and components, please note the precautions in this bulletin to avoid damaging electrical components and switches. Many lubricants, cleaners, and automotive chemicals contain silicone or other compounds that may contaminate electrical contacts, and therefore increase electrical resistance and decrease switch performance. The use of any cleaners or fluids may increase…
• 10111389Apr 9, 2015Equipment. TSB: Some 2004 - 2015 model year Toyota vehicles may exhibit odors naturally occurring from the HVAC system and/or related environmental factors. Although there is no way to eliminate these odors, follow the General Procedure in this bulletin to minimize the odors experienced.
• 10111196Apr 9, 2015Equipment. TSB: Some 2004 - 2015 model year Toyota vehicles may exhibit odors naturally occurring from the HVAC system and/or related environmental factors. Although there is no way to eliminate these odors, follow the General Procedure in this bulletin to minimize the odors experienced.
• 10111400Apr 7, 2015Engine cooling. TT: Starting with 2010 Model Year, Toyota began a gradual transition to the use of synthetic 0w-20 viscosity engine oil. There are multiple benefits of this oil. Due to the them improved performance and durability of 0w-20 synthetic oil, Toyota has extended the oil change intervals to 10,000 miles for most vehicles that require this oil.
• 10111207Apr 7, 2015Engine cooling. TT: Starting with 2010 Model Year, Toyota began a gradual transition to the use of synthetic 0w-20 viscosity engine oil. There are multiple benefits of this oil. Due to the them improved performance and durability of 0w-20 synthetic oil, Toyota has extended the oil change intervals to 10,000 miles for most vehicles that require this oil.

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