Toyota Sienna 2017 — technical service bulletin
Bulletin T-TT-0410-16 · NHTSA communication 10111620 · issued Aug 17, 2016
Technical service bulletin
communication type
Power Train
component
2017
model years
1
vehicle entries
Official summary
TT: The 2017 Sienna is equipped with a new 8 Speed Direct Automatic Transmission (DAT). Because of this, we are requesting 100% TAS Case creation for concerns related to this new technology.
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.