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Service bulletins for the 2021 Toyota Supra

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.

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

By type

By component

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

Bulletins, newest first
24TD042024-09-07. Service bulletin. ELECTRICAL SYSTEM. TECHNICAL INSTRUCTIONS FOR LIMITED-SERVICE CAMPAIGN 24TD04 DATA COMUNICATION MODULE (DCM) UPDATE CERTAIN 2020 - 2023 SUPRA
24TD042024-09-07. Service campaign. ELECTRICAL SYSTEM. Due to incorrect software in the Data Communication Module (DCM) in your vehicle, the DCM cannot connect to the 4G cellular service. Therefore, after the 3G cellular service was sunset, voice communication with service providers when using connected services like Emergency call and Roadside assistance, is not available.
24TD042024-09-07. Service campaign. ELECTRICAL SYSTEM. Due to incorrect software in the Data Communication Module (DCM) in your vehicle, the DCM cannot connect to the 4G cellular service. Therefore, after the 3G cellular service was sunset, voice communication with service providers when using connected services like Emergency call and Roadside assistance, is not available.
24TD042024-08-08. Service bulletin. ELECTRICAL SYSTEM. TECHNICAL INSTRUCTIONS FOR LIMITED-SERVICE CAMPAIGN 24TD04 DATA COMUNICATION MODULE (DCM) UPDATE CERTAIN 2020 - 2023 SUPRA
24TD042024-08-08. Service campaign. ELECTRICAL SYSTEM. Due to incorrect software in the Data Communication Module (DCM) in your vehicle, the DCM cannot connect to the 4G cellular service. Therefore, after the 3G cellular service was sunset, voice communication with service providers when using connected services like Emergency call and Roadside assistance, is not available.
24TD042024-08-08. Service campaign. ELECTRICAL SYSTEM. Due to incorrect software in the Data Communication Module (DCM) in your vehicle, the DCM cannot connect to the 4G cellular service. Therefore, after the 3G cellular service was sunset, voice communication with service providers when using connected services like Emergency call and Roadside assistance, is not available.
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-SB-0002-20 Rev12024-07-06. Service bulletin. ELECTRICAL SYSTEM. Some 2020 – 2024 model year Supra vehicles equipped with navigation require a new process for updating map data. This procedure is unique to Supra and is available to customers at any time during their map update service period. Updated map data is released periodically, and there is no activation key/code required to update the vehicle map during the valid map update period. REVISION NOTICE April 09, 2024 Rev1: •Applicability has been updated to include 2021 – 2024 model year Supra vehicles.
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-SB-0002-20 Rev12024-07-06. Service bulletin. ELECTRICAL SYSTEM. Some 2020 – 2024 model year Supra vehicles equipped with navigation require a new process for updating map data. This procedure is unique to Supra and is available to customers at any time during their map update service period. Updated map data is released periodically, and there is no activation key/code required to update the vehicle map during the valid map update period. REVISION NOTICE April 09, 2024 Rev1: •Applicability has been updated to include 2021 – 2024 model year Supra vehicles.
T-TT-0648-21 Rev2022-09-15. Service bulletin. ELECTRICAL SYSTEM. TT: When testing the battery during PDS with either the DSS-5000 or DCA-8000 battery diagnostic tools, the DCA/DSS battery tester may provide inaccurate results if it is connected to the remote battery posts under the hood.
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
21TC02_Technical2021-11-15. Service bulletin. ELECTRICAL SYSTEM. TI: TECHNICAL INSTRUCTIONS 21TC02 IMPROPER PROGRAMING IN A 12V BATTERY MANAGEMENT SYSTEM CERTAIN 2021 MODEL YEAR SUPRA VEHICLES
21TC02_Dealer_Le2021-11-15. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. DL: Due to a software error in the battery management system of the 12V battery located under the vehicle?s hood, the engine auto Stop/Start functionality could become deactivated.
12V Li-ion Used2021-11-15. Service bulletin. EQUIPMENT:OTHER:LABELS; ELECTRICAL SYSTEM. 12V Li-ion Used Batteries label 10.07.2021
21TC02_Region_Le2021-11-15. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. RL: Due to a software error in the battery management system of the 12V battery located under the vehicle?s hood, the engine auto Stop/Start functionality could become deactivated.
T-SB-0011-212021-03-15. Service bulletin. ELECTRICAL SYSTEM. TSB: This Service Bulletin provides parts information and repair procedures for wire harnesses, wire terminals, and connectors for 2020-2021 model year Supra vehicles.
T-SB-0038-20 Rev2021-02-16. Service bulletin. STRUCTURE; ELECTRICAL SYSTEM; EQUIPMENT. TSB: Pre-Delivery Service (PDS) is a critical step in satisfying our new car customers. Customer feedback indicates the following areas deserve special attention when performing PDS: ?Careful inspection for paint chips/scratches and body dents/dings. ?Proper operation of electrical accessories (including interior light, clock, and radio reset). ?Interior cleanliness. ?Proper function of mechanical systems. Customer retention and proper maintenance of vehicles are and have always been a major focus for Toyota. To help remind customers that regular service is essential to the proper maintenance of the vehicle, dealers are required to install a service reminder sticker before delivery. By doing this, customers will be reminded to return to your dealership for service. Your current service reminder sticker may be used. (See PDS Check Sheet item 8 of ?Final Inspection and Cleaning.?) This bulletin contains the PDS procedures that apply specifically to the 2021 Supra. A universal PDS Check Sheet has been developed for all 2021 model year Toyota vehicles and contains PDS steps which apply to all Toyota models. To properly perform a complete PDS, you must complete all procedures contained in this TSB, as well as the universal PDS Check Sheet. In addition, if the vehicle is stored for over 30 days, be sure to follow Supra Long-Term Vehicle Storage Guidelines.
T-SB-0038-202020-05-11. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. TSB: Pre-Delivery Service (PDS) is a critical step in satisfying our new car customers. Customer feedback indicates the following areas deserve special attention when performing PDS: ?Careful inspection for paint chips/scratches and body dents/dings ?Proper operation of electrical accessories (including interior light, clock, and radio reset) ?Interior cleanliness ?Proper function of mechanical systems Customer retention and proper maintenance of vehicles are and have always been a major focus for Toyota. To help remind customers that regular service is essential to the proper maintenance of the vehicle, dealers are required to install a service reminder sticker before delivery. By doing this, customers will be reminded to return to your dealership for service. Your current service reminder sticker may be used. (See PDS Check Sheet item 8 of ?Final Inspection and Cleaning.?) This bulletin contains the PDS procedures that apply specifically to the 2021 Supra. A universal PDS Check Sheet has been developed for all 2021 model year Toyota vehicles and contains PDS steps that apply to all Toyota models. To properly perform a complete PDS, you must complete all procedures contained in this TSB, as well as the universal PDS Check Sheet. In addition, if the vehicle is stored for over 30 days, be sure to follow Supra Long-Term Vehicle Storage Guidelines.
T-SB-0035-202020-05-11. Service bulletin. ELECTRICAL SYSTEM. TSB: A battery in a stored vehicle is subject to conditions that can reduce its performance and service life. These conditions include storage period, temperature, parasitic drain, and battery load. Because of these factors, battery inspection and maintenance are required in order to ensure proper operation and optimal battery life. As a matter of policy, Toyota does not provide battery warranty coverage for discharged and/or failed batteries due to lack of maintenance. It is the dealer?s responsibility to maintain the specified State-Of-Charge (SOC) of the vehicle?s battery while in stock and ensure proper SOC at delivery. To eliminate customer service concerns due to an undercharged battery during the first few weeks of ownership, ALL dealers should check battery SOC and recharge, if necessary, no more than 48 hours before delivery to the customer.

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