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Service bulletins for the 2021 Toyota Tacoma

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.

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

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Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
T-SB-0106-22 Rev22026-02-11. Service bulletin. ELECTRICAL SYSTEM. OBSOLETE NOTICE January 30, 2026: This bulletin is now obsolete. Please see T-SB-0001-26.
T-SB-0001-262026-02-11. Service bulletin. ELECTRICAL SYSTEM. Some 2018 – 2024 model year Toyota vehicles equipped with a Premium Audio with Dynamic Navigation System require a Special Service Tool (SST) USB flash drive to update the map, points of interest, and system software.
T-TT-0780-252025-06-06. Service bulletin. ELECTRICAL SYSTEM. To assist with the early detection and early resolution of audio related concerns you may be asked to recover MMR data from the head unit. The following steps are instructions on how to retrieve the data from the system and are only to be used when requested by FTS and/or FPE.
T-TT-0780-252025-05-15. Service bulletin. ELECTRICAL SYSTEM. To assist with the early detection and early resolution of audio related concerns you may be asked to recover MMR data from the head unit. The following steps are instructions on how to retrieve the data from the system and are only to be used when requested by FTS and/or FPE.
T-SB-0106-22 Rev22025-04-08. Service bulletin. ELECTRICAL SYSTEM. Some 2018 – 2024 model year Toyota vehicles equipped with a Premium Audio with Dynamic Navigation System require a Special Service Tool (SST) USB flash drive to update the map, points of interest, and system software. The SST is used with applicable vehicles to deliver the update, however, the process for generating license keys differs from previous generations.
T-SB-0106-22 Rev22025-03-11. Service bulletin. ELECTRICAL SYSTEM. Some 2018 – 2024 model year Toyota vehicles equipped with a Premium Audio with Dynamic Navigation System require a Special Service Tool (SST) USB flash drive to update the map, points of interest, and system software. The SST is used with applicable vehicles to deliver the update, however, the process for generating license keys differs from previous generations.
T-TT-0756-242024-07-06. Service bulletin. ELECTRICAL SYSTEM. Phone call sound quality may be adjusted to fit the Tacoma owner’s preferences.
T-TT-0754-242024-07-06. Service bulletin. ELECTRICAL SYSTEM. Customers have expressed concerns about the performance of Qi Wireless Chargers. Wireless chargers on applicable vehicles are designed to work with Qi Certified devices only. MagSafe devices, that are not Qi Certified, may not charge as expected with Qi Wireless Chargers.
T-TT-0756-242024-07-06. Service bulletin. ELECTRICAL SYSTEM. Phone call sound quality may be adjusted to fit the Tacoma owner’s preferences.
T-TT-0754-242024-07-06. Service bulletin. ELECTRICAL SYSTEM. Customers have expressed concerns about the performance of Qi Wireless Chargers. Wireless chargers on applicable vehicles are designed to work with Qi Certified devices only. MagSafe devices, that are not Qi Certified, may not charge as expected with Qi Wireless Chargers.
21TD02_TIS_Techn2024-03-18. Service bulletin. ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:IMMOBILIZER/PROXIMITY:KEY/SENDER. TI: 21TD02 Expired on September 23, 2023 TECHNICAL INSTRUCTIONS FOR LIMITED SERVICE CAMPAIGN 21TD02 ADDITIONAL REMOTE KEYLESS ENTRY KEY CERTAIN 2021 MODEL YEAR TACOMA VEHICLES
21TD02_TIS_Deale2024-03-18. Service bulletin. ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:IMMOBILIZER/PROXIMITY:KEY/SENDER. DP: 21TD02 Expired on September 23, 2023 Due to an unexpected supplier issue, only one (1) Remote Keyless Entry key was included with the subject vehicles when they were delivered to customers. These customers were advised at the time that Toyota would contact them at a later date to arrange for an additional Remote Keyless Entry key to be provided.
TSB0026202023-12-26. Service bulletin. UNKNOWN OR OTHER; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM:SOFTWARE; FORWARD COLLISION AVOIDANCE; AIR BAGS. TSB: All 2020 ? 2023 model year 4Runner, 2018 ? 2022 model year Sequoia, 2018 ? 2023 model year Tacoma, and 2018 ? 2021 model year Tundra vehicles are equipped with Pre-collision System (PCS) and Dynamic Radar Cruise Control (DRCC) as part of the Toyota Safety Sense (TSS) package. The PCS and DRCC systems are designed to help mitigate a potential collision and maintain a pre-determined traveling distance. It is recommended to disable the PCS and DRCC systems on vehicles that have been modified (ride height, oversized wheels/tires, brush bars, etc.) in a way that potentially disrupts the functionality of these systems. Vehicle owner?s written consent is required before performing the calibration to permanently disable the PCS and DRCC systems. Follow the Repair Procedure in this bulletin to disable the PCS and DRCC systems.
22TC01 Technical2023-11-27. Service bulletin. ELECTRICAL SYSTEM. TI: TECHNICAL INSTRUCTIONS FOR 22TC01 DATA COMMUNICATION MODULE (DCM) REPROGRAMMING CERTAIN 2021 MODEL YEAR C-HR, RAV4 PRIME, TUNDRA CERTAIN 2021-2022 4RUNNER, HIGHLANDER, HIGHLANDER HV, PRIUS PRIME, SEQUOIA, TACOMA CERTAIN 2022 PRIUS
T-SB-0057-182023-06-26. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. 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.
Accessory2023-06-26. Service bulletin. ELECTRICAL SYSTEM:WIRING:CONNECTORS/PLUGS:ACCESORY POWER OUTLET/JACK/PORT/USB/SAE/CIGARETTE LIGHTER. This Toyota Genuine Power Port provides additional capability to your phone or tablet, so your devices always have power/charge. Includes two fast charging smart USB connectors with blue LED power status light. Applicable to MY21, MY22, and 2023 Tacoma
T-TT-0721-23 Rev2023-04-17. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. TT: Electronic Parts Catalog (EPC) does not include notes requiring ordering the Protector Heater seals when replacing the air conditioning Evaporator Core (88511- #####) or Radiator Heater Unit SubAssembly (87107- #####
T-TT-0721-232023-04-17. Service bulletin. ELECTRICAL SYSTEM. TT: Electronic Parts Catalog (EPC) does not include notes requiring ordering the Protector Heater seals when replacing the air conditioning Evaporator Core (87511- #####) or Radiator Heater Unit Sub-Assembly (87107- #####).
Service Campaign2022-09-15. Service bulletin. ELECTRICAL SYSTEM. DL: Due to improper programming of the Data Communication Module (DCM), which provides cellular communication in various situations, including emergencies, the driver and Safety Connect operator may not be able to hear each other?s voices during a Safety Connect call
22TC012022-06-21. Service bulletin. ELECTRICAL SYSTEM. TECHNICAL INSTRUCTIONS FOR 22TC01 DATA COMMUNICATION MODULE (DCM) REPROGRAMMING CERTAIN 2021 MODEL YEAR C-HR, RAV4 PRIME, TUNDRA CERTAIN 2021-2022 4RUNNER, HIGHLANDER, HIGHLANDER HV, PRIUS PRIME, SEQUOIA, TACOMA CERTAIN 2022 PRIUS
22TC01 Technical2022-05-16. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. TECHNICAL INSTRUCTIONS FOR 22TC01 DATA COMMUNICATION MODULE (DCM) REPROGRAMMING CERTAIN 2021 MODEL YEAR C-HR, RAV4 PRIME, TUNDRA CERTAIN 2021-2022 4RUNNER, HIGHLANDER, HIGHLANDER HV, PRIUS PRIME, SEQUOIA, TACOMA CERTAIN 2022 PRIUS
T-TT-0687-222022-04-18. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. TT: When customers have a concern about a discharged battery, no start, or general battery concern, the DCA-8000 is the only appropriate tool to use for diagnosis
22TC01 Team Memb2022-04-18. Service bulletin. AIR BAGS; ELECTRICAL SYSTEM; SEAT BELTS. SSC: SPECIAL SERVICE CAMPAIGN 22TC01 Over-the-Air (OTA) pilot program. This pilot program would enable you to complete Special Service Campaign 22TC01 for DCM (Data Communication Module) Reprogramming for Safety Connect, which includes your vehicle. With your active telematics account, you are encouraged to complete this campaign using this Over-the-Air (OTA) update by following these steps: 1) To complete this update, each Team Member will use the Toyota/Lexus App installed on their phone. 2) Within a few days of this E-Mail, we will send a notification to your Toyota/Lexus app to schedule and install the update on your vehicle. 3) Click on either the notification on your lock screen or the tile in the app to review the update and then continue in the App to approve the update. 4) The night after you approve the update, the telematics module will perform the update, and you will receive a confirmation notification through the app.
T-TT-0599-20 Rev2022-04-18. Service bulletin. ELECTRICAL SYSTEM. TT: Vehicle control apps might not operate as expected at times due to preconditions (normal operating parameters) not being established, vehicle settings and/or network/cellular coverage concerns
22TC01 Technical2022-03-14. Service bulletin. ELECTRICAL SYSTEM. TI: TECHNICAL INSTRUCTIONS FOR 22TC01 DATA COMMUNICATION MODULE (DCM) REPROGRAMMING CERTAIN 2021 MODEL YEAR C-HR, RAV4 PRIME, TUNDRA CERTAIN 2021-2022 4RUNNER, HIGHLANDER, HIGHLANDER HV, PRIUS PRIME, SEQUOIA, TACOMA CERTAIN 2022 PRIUS

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