Toyota 4RUNNER 2018–2021 — technical service bulletin
Bulletin T-TT-0611-20 Rev · NHTSA communication 10198127 · issued May 7, 2021
Technical service bulletin
communication type
Equipment
component
2018–2021
model years
40
vehicle entries
Official summary
TT: To assist with the early detection and early resolution of audio related concerns, it may be requested as part of the remanufactured head unit return 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 audio suppliers, FTS, and/or FPEs.
Vehicles covered
- 2020 Toyota 4RUNNER
- 2021 Toyota 4RUNNER
- 2019 Toyota Avalon
- 2020 Toyota Avalon
- 2021 Toyota Avalon
- 2021 Toyota Avalon Hybrid
- 2018 Toyota Camry
- 2019 Toyota Camry
- 2020 Toyota Camry
- 2021 Toyota Camry
- 2021 Toyota Camry Hybrid
- 2020 Toyota C-HR
- 2021 Toyota C-HR
- 2020 Toyota Corolla
- 2021 Toyota Corolla
- 2021 Toyota Corolla Hatchback
- 2021 Toyota Corolla Hybrid
- 2020 Toyota Highlander
- 2021 Toyota Highlander
- 2021 Toyota Highlander Hybrid
- 2020 Toyota Prius
- 2021 Toyota Prius
- 2021 Toyota Prius Prime
- 2019 Toyota RAV4
- 2020 Toyota RAV4
- 2021 Toyota RAV4
- 2021 Toyota RAV4 Prime
- 2020 Toyota Sequoia
- 2021 Toyota Sequoia
- 2018 Toyota Sienna
- 2019 Toyota Sienna
- 2020 Toyota Sienna
- 2021 Toyota Sienna
- 2021 Toyota Sienna Hybrid
- 2020 Toyota Tacoma
- 2021 Toyota Tacoma
- 2020 Toyota Tundra
- 2021 Toyota Tundra
- 2021 Toyota Venza
- 2021 Toyota Venza Hybrid
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.