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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 type: Service campaign are shown. Show all

Bulletins, newest first
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 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.

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