Service bulletins for the 2021 Toyota Avalon
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.
193 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
Only bulletins with component: Backup camera are shown. Show all
| T-SB-0115-22 Rev | 2023-04-17. Service bulletin. BACK OVER PREVENTION; FUEL SYSTEM, GASOLINE. TSB: Some 2019 ? 2022 model year Avalon, 2018 ? 2023 model year Camry, 2017 ? 2022 model year Highlander, and 2017 ? 2020 model year Sienna vehicles equipped with a 2GR-FKS engine may exhibit a knocking noise from the vacuum pump at idle. |
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| T-TT-0599-20 Rev | 2021-04-19. Service bulletin. ELECTRICAL SYSTEM; BACK OVER PREVENTION. 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. |
| T-TT-0599-20 Rev | 2021-02-16. Service bulletin. BACK OVER PREVENTION:SOFTWARE. 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. |
| T-TT-0627-20 | 2020-11-30. Service bulletin. BACK OVER PREVENTION:SOFTWARE. TT: During recent discharged battery cases on vehicles equipped with LG DCM, there was confusion if a DCM update was available. Technicians are relying on the Techstream Healthcheck to determine if an update is possible. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.