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Service bulletins for the 2012 Toyota Sequoia

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.

322 on file from NHTSA, as of 2026-10-19.

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Bulletins, newest first
F0A_Dealer Lette2018-04-23. Service bulletin. FUEL SYSTEM, GASOLINE. Dealer Letter: In our continuing efforts to ensure the best in customer satisfaction, Toyota has turned Limited Service Campaign (LSC) F0A into Special Service Campaign (SSC) F0A with no expiration date. This SSC covers certain 2012 ? 2014 MY Tundra and Sequoia vehicles. This SSC will cover approximately 39,000 Sequoia and 247,000 Tundra vehicles equipped with a 5.7 liter gasoline or 5.7 Liter-Flex Fuel engines. In certain 2012 ? 2014 Model Year Toyota Tundra and Sequoia vehicles equipped with a 5.7 Liter gasoline or 5.7 Liter-Flex Fuel engines, the Engine Control Module (ECM) may set a Diagnostic Trouble Code (DTC) if debris/ice becomes lodged in the air switching valve. If this occurs, the Malfunction Indicator (Check Engine) Light could illuminate and the vehicle could enter a ?Fail-Safe? Mode (also known as ?Limp-Home? Mode). If this occurs the vehicle?s power and speed will be reduced, which could inconvenience you and require immediate repair.
T-TT-0374-152018-04-23. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. 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.
TTT-0268-13 Rev32018-04-23. Service bulletin. ELECTRICAL 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. Make sure to inquire with the customer if the connectivity concerns occurred after receiving an operating system update on their phone or if they have restored their phone data/settings recently.
T-TT-0385-162018-04-23. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. 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.
TTT-0337-15 Rev12018-04-23. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. TT: When updating either the navigation or radio firmware, verify the vehicle applicability BEFORE beginning the update.
TTT-0234-13 Rev62018-04-23. Service bulletin. EQUIPMENT:ELECTRICAL. 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.
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-0360-152018-04-23. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. 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 media playback is inoperative via Bluetooth audio.
T-SB-0058-13 Rev2018-04-23. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ENGINE; ELECTRICAL SYSTEM:SOFTWARE. TSB: Some 2012 ? 2015 model year Sequoia and Tundra vehicles with the 3UR-FBE engine may exhibit a MIL ?ON? condition with Diagnostic Trouble Codes (DTCs) P0171/P0174 (System too Lean Bank 1/Bank 2), P0172/P0175 (System too Rich Bank 1/Bank 2), P1604 (Startability Malfunction), and/or P1605 (Rough Idling) after attempting to start the engine. Alcohol Density Estimate values may be high even though the vehicle was fueled with regular fuel (E0/E10). The Engine Control Module/ECM (SAE term: Powertrain Control Module/PCM) logic has been modified to address this condition. Use the following Repair Procedure to reprogram the ECM (PCM). ©
T-TT-0381-162018-04-23. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. Tech Tip: Some customers may experience difficulty programming HomeLink.
TSB-0012-13 Rev22018-04-23. Service bulletin. ENGINE; ELECTRICAL SYSTEM:SOFTWARE. TSB: 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.
D0E_TI_Expired_P2018-04-23. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ENGINE. Dealer Letter: LSC Expired on May 31, 2016. In certain 2012 – 2013 Model Year Toyota Tundra and Sequoia vehicles equipped with a 5.7 Liter gasoline or 5.7 Liter-Flex Fuel engines, the Engine Control Module (ECM) calibration may cause an emissions control component called an Air Injection Pump to fail under certain driving conditions. If this occurs, the vehicle could enter a “Fail-Safe” Mode (also known as “Limp-Home” Mode). This mode reduces the vehicle’s power and speed, which could inconvenience you and require immediate repair
D0E_Dealer Lette2018-04-23. Service bulletin. ENGINE; ELECTRICAL SYSTEM:SOFTWARE. Dealer Letter: LSC Expired on May 31, 2016.
T-TT-0204-12 Rev2018-04-23. Service bulletin. ELECTRICAL SYSTEM. Some Phone iOS 5 customers with Denso Premium HDD Navigation (AVN) or Display Navigation w/ Entune (DNE) head units may experience an error message when they attempt to use the Entune application.
T-TT-0203-12 Rev2018-04-23. Service bulletin. ELECTRICAL SYSTEM. Some Phone iOS 5 customers with Denso Premium HDD Navigation (AVN) or Display Navigation w/ Entune (DNE) head units may experience an iPod Authorization error when they plug their iPhone into the USB port.
T-TT-0205-122018-04-23. Service bulletin. ELECTRICAL SYSTEM. Customers who purchase new or replacement iPhones running iOS 6 may find that Toyota a Entune application will not launch on the iPhone. The issue can occur when the customer restores/transfers their apps, contacts, etc.
T-TT-0204-122018-04-23. Service bulletin. ELECTRICAL SYSTEM. Some Phone iOS 5 customers with Denso Premium HDD Navigation (AVN) or Display Navigation w/ Entune (DNE) head units may experience an error message when they attempt to use the Entune application.
T-TT-0203-122018-04-23. Service bulletin. ELECTRICAL SYSTEM. Some Phone iOS 5 customers with Denso Premium HDD Navigation (AVN) or Display Navigation w/ Entune (DNE) head units may experience an iPod Authorization error when they plug their iPhone into the USB port.
T-SB-0206-122018-04-23. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Some 2012 and 2013 model year Sequoia and Tundra vehicles with the 3UR-FBE (5.7 L) engine may exhibit a MIL ?ON? condition with Diagnostic Trouble Code (DTC) P0461 (Fuel Level Sensor ?A? Circuit Range/Performance) after a recent fuel refill. The Engine Control Module/ECM (SAE term: Powertrain Control Module/PCM) logic has been revised to address this condition. Use the following repair procedure to recalibrate the ECM (PCM).
T-SB-0187-122018-04-23. Service bulletin. STRUCTURE:BODY. Toyota vehicles are equipped with either conventional or run-flat tires. Sometimes punctures may occur as a result of contact with road debris or other hazards. If a puncture occurs, it may be possible to repair the tire and return it to service. With a conventional tire it is not possible to drive for an extended amount of time with the tire at low pressures as damage to the tire may occur. With run-flat tires, due to reinforced sidewalls, it is possible to drive for up to 100 miles (160 km) at speeds less than 55 mph (90 km/h) with little or no damage to the tire.
T-TT-0005-10 Rev2018-04-23. Service bulletin. ENGINE. Starting with the 2010 MY, Toyota began a gradual transition to the use of synthetic 0w-20 viscosity engine oil.
T-TT-0005-10 Rev2018-04-23. Service bulletin. ENGINE. Starting with the 2010 MY, Toyota began a gradual transition to the use of synthetic 0w-20 viscosity engine oil.
SET Airbag Senso2018-04-23. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This communication pertains to a current safety recall being conducted by the Southeast Toyota Distributors LLC (SET). TMS is sending this communication for informational purposes in the event you are contacted by a customer covered by this recall.
T-TT-0213-132018-04-23. Service bulletin. AIR BAGS. Toyota vehicles are equipped with SRS, including various airbags and in some models, seat belt pre-tensioners, to help reduce the risk of injury in a collision. If a customer expresses any concerns that the SRS airbags or pretensioner devices did not perform as expected, please follow the steps in the recommendations section below.
T-SB-0064-10 Rev2018-04-23. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin is now obsolete. Please see T-SB-0012-13.

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