Toyota Avalon 2020–2023 — technical service bulletin
Bulletin T-TT-0678-21 Rev · NHTSA communication 10230371 · issued Dec 15, 2022
Technical service bulletin
communication type
Equipment
component
2020–2023
model years
27
vehicle entries
Official summary
TT: Some 19CY LG DCM equipped vehicles may not be able to complete the firmware update due to not having an active account or waived services during the trial. Follow the steps below to enable ?Temp DCM Activation?.
Vehicles covered
- 2021 Toyota Avalon
- 2022 Toyota Avalon
- 2021 Toyota Avalon Hybrid
- 2022 Toyota Avalon Hybrid
- 2020 Toyota Camry
- 2021 Toyota Camry
- 2022 Toyota Camry
- 2021 Toyota Corolla
- 2022 Toyota Corolla
- 2023 Toyota Corolla
- 2020 Toyota Corolla Hatchback
- 2021 Toyota Corolla Hatchback
- 2021 Toyota Corolla Hybrid
- 2022 Toyota Corolla Hybrid
- 2023 Toyota Corolla Hybrid
- 2020 Toyota RAV4
- 2021 Toyota RAV4
- 2022 Toyota RAV4
- 2020 Toyota RAV4 Hybrid
- 2021 Toyota RAV4 Hybrid
- 2022 Toyota RAV4 Hybrid
- 2021 Toyota Sienna
- 2022 Toyota Sienna
- 2021 Toyota Sienna Hybrid
- 2022 Toyota Sienna Hybrid
- 2021 Toyota Venza
- 2022 Toyota Venza
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.