Toyota Sienna 2021–2022 — technical service bulletin
Bulletin T-SB-0083-23 · NHTSA communication 10245470 · issued Oct 17, 2023
Technical service bulletin
communication type
Engine and Engine Cooling
component
2021–2022
model years
4
vehicle entries
Official summary
TSB: Some 2021 ? 2022 model year Sienna Hybrid vehicles may exhibit a condition in which the fuel gauge reading changes when the vehicle is driven up or down an incline and left at an angle of up to 15° for five minutes or longer. The combination meter assembly ECU logic has been modified to reduce the possibility of this condition. Follow the Repair Procedure in this bulletin to reprogram the combination meter assembly ECU.
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.