Toyota Avalon 2020 — technical service bulletin
Bulletin 19TC06 - Region · NHTSA communication 10171706 · issued Jan 9, 2020
Technical service bulletin
communication type
Electrical System
component
2020
model years
2
vehicle entries
Official summary
Region Letter: Due to inappropriate ECU programming, fuel consumption may not conform with the certification value. Actual average fuel economy may be negligibly higher than the certification listed on the Vehicle Window Sticker (Monroney Label).
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.