Toyota Sienna Hybrid 2021–2024 — technical service bulletin
Bulletin T-SB-0047-24 · NHTSA communication 11005148 · issued May 14, 2024
Technical service bulletin
communication type
Service Brakes
component
2021–2024
model years
4
vehicle entries
Official summary
Some drivers of 2021 – 2024 model year Sienna Hybrid vehicles may be sensitive to the momentary transition from regenerative braking to hydraulic braking under certain driving conditions, such as while driving downhill, or turning with light brake pedal application. The brake actuator control module can be updated to improve brake feeling for this condition.
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.