Toyota Sienna Hybrid 2021 — technical service bulletin
Bulletin T-TT-0641-21 · NHTSA communication 10188918 · issued Feb 9, 2021
Technical service bulletin
communication type
Service Brakes
component
2021
model years
1
vehicle entries
Official summary
TT: Any customer brake concern in the New York and Boston Regions ONLY.
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.