Toyota Sienna 2017 — technical service bulletin
Bulletin T-SB-0187-17 Rev · NHTSA communication 10185783 · issued Dec 11, 2020
Technical service bulletin
communication type
Electrical System
component
2017
model years
1
vehicle entries
Official summary
TSB: Some 2017 model year Sienna vehicles may exhibit one or more the following conditions: ?Lack of power from stop. ?High RPM shift point at 2 ? 3 shifts. ?Hesitation in low gears. ?Holds gear too long. The Engine Control Module (ECM) (SAE term: Powertrain Control Module/PCM) logic has been modified. Follow the Repair Procedure in this bulletin to address these conditions.
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.