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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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Only bulletins with component: Transmission and driveline are shown. Show all

Bulletins, newest first
T-SB-0134-16-Rev2019-09-03. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM; ENGINE. TSB: REVISION NOTICE July 01, 2019 Rev2: ? Applicability has been updated to 2019 ? 2020 model year Toyota vehicles. ? The Techstream Preparation and Process Overview sections have been updated. October 30, 2017 Rev1: ? Applicability has been updated to include 2018 model year vehicles. Any previous printed versions of this bulletin should be discarded. SUPERSESSION NOTICE The information contained in this bulletin supersedes SB No. T-SB-0012-13. Service Bulletin No. T-SB-0012-13 is obsolete and any printed versions should be discarded. Be sure to review the entire content of this bulletin before proceeding. Flash reprogramming allows the Electronic Control Unit (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. NOTE ECU is a Toyota term used to describe integrated computerized devices responsible for managing the operation of a system or subsystem. For the purposes of this bulletin, the term ?ECU? is used as a generic label for the following SAE J1930 standard references: ? Powertrain Control Module (PCM) ? Engine Control Module (ECM) ? Transmission Control Module (TCM) ? Any other Toyota specific control unit
T-TT-0086-112018-04-23. Service bulletin. POWER TRAIN. 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.
F0A_TI_Sequoia_P2018-04-23. Service bulletin. ENGINE AND ENGINE COOLING; POWER TRAIN. Technical Instructions: 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.
F0A_TI_Added Cal2018-04-23. Service bulletin. POWER TRAIN; ENGINE AND ENGINE COOLING. Technical Instructions: 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-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-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-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-0033-12 Rev2018-04-23. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Some 2012 ? 2013 model year Sequoia and Tundra vehicles with the 3UR-FE/FBE (5.7 L) engine may exhibit a MIL ?ON? condition with Diagnostic Trouble Code (DTC) P2440/P2442 (Secondary Air Injection System Switching Valve Stuck Open Bank 1/Bank 2) under freezing ambient conditions. 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 reprogram the ECM (PCM).
T-TT-0058-10 Rev2018-04-23. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE). 4WD System Inoperative
T-SB-0058-13 Rev2018-04-23. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ENGINE. Some 2012 ? 2013 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-SB-0058-13 Rev2018-04-02. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ENGINE. 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-SB-0071-11 Rev2018-04-02. Service bulletin. POWER TRAIN. The purpose of this service bulletin is to provide precautions to follow when installing an automatic transmission/transaxle assembly to avoid MIL ?ON,? shifting issues, and/or transmission damage. Use the information in this bulletin when installing an automatic transmission/transaxle assembly
D0E_LSC_Technica2017-08-14. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. Technical Instructions: 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.
F0A_LSC_Region L2017-08-14. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ENGINE AND ENGINE COOLING. Region Letter: 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-SB-0200-08 Rev2017-08-01. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. TSB: The purpose of this bulletin is to assist in the identification and location of serial numbers on 2006 - 2014 model year automatic transmissions.
T-SB-0134-142017-08-01. Service bulletin. POWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION. TSB: The purpose of this bulletin is to provide precautions to follow when installing an automatic transmission/transaxle assembly to avoid MIL "ON" shifting issues and/or transmission damage. Use the information in this bulletin when installing an automatic transmission/transaxle assembly.
T-SB-0260-08 Rev2017-08-01. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. TSB: The purpose of this bulletin is to assist in the identification and location of serial numbers on 2006 -2014 model year remanufactured automatic transmissions.
T-SB-0049-11 Rev2017-08-01. Service bulletin. POWER TRAIN; EQUIPMENT; POWER TRAIN:AUTOMATIC TRANSMISSION. TSB: The purpose of this bulletin is to provide information regarding transmission and/or park neutral position switch installation. If the manual shift lever is rotated prior to installing the park neutral position switch, the detent spring may become detached from the manual shift lever.
T-SB-0014-11 Rev2017-08-01. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER; POWER TRAIN:AUTOMATIC TRANSMISSION. TSB: The purpose of this service bulletin is to provide information regarding the installation of the correct torque converter bolts during automatic transmission/transaxle assembly replacement. Incorrect torque converter bolts or missing washers can cause damage to the torque converter assembly.
T-SB-0006-11 Rev2017-08-01. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; POWER TRAIN:AUTOMATIC TRANSMISSION:COOLING UNIT AND LINES; POWER TRAIN. TSB: World Standard (WS) Automatic Transmission Fluid (ATF) was introduced to reduce maintenance costs and increase the mileage between scheduled maintenance checks. Here are some important tips when working with ATF-WS in Toyota vehicles requiring it's use.
T-SB-0143-142017-08-01. Service bulletin. ENGINE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). TSB: Some 2012 - 2013 model year Sequoia and Tundra vehicles equipped with 3UR engines may exhibit a MIL "ON" condition with the following Diagnostic Trouble Codes (DTCs): ? P2440: Secondary Air Injection System Switching Valve Stuck Open Bank 1 ? P2442: Secondary Air Injection System Switching Valve Stuck Open Bank 2 This condition may be caused by debris/ice in the air switching valve assembly. The Engine Control Module/ECM (SAE term: Powertrain Control Module/PCM) logic has been changed to reduce the possibility of this condition occurring.
SB-TSB-0024-132016-06-17. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ENGINE. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
T-TT-0058-102016-04-12. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
TSB-0049-112011-07-08. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION; POWER TRAIN:AUTOMATIC TRANSMISSION. TOYOTA: INFORMATION ON INSTALLING MANUAL TRANSMISSION SHIFT LEVER OR PARK NEUTRAL POSITION SWITCH. *RM

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