Toyota Sequoia 2021 — technical service bulletin
Bulletin T-TT-0670-21 · NHTSA communication 10203551 · issued Oct 14, 2021
Technical service bulletin
communication type
Power Train
component
2021
model years
2
vehicle entries
Official summary
TT: For some 2021 Tundra and Sequoia vehicles, there may appear to be an ATF leak from the bellhousing area of the transmission. This condition is specifically focused on new vehicles and is typically found during the PDS inspection.
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.