Toyota Avalon 2020–2021 — technical service bulletin
Bulletin T-TT-0627-20 · NHTSA communication 10183280 · issued Oct 21, 2020
Technical service bulletin
communication type
Back Over Prevention
component
2020–2021
model years
10
vehicle entries
Official summary
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.
Vehicles covered
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.