TT: Some 2021- 2023 Sienna HV vehicles may duplicate an abnormal noise (Growl, Humming and/or other) from...
Toyota technical service bulletin T-TT-0725-23 for 2021 Toyota Sienna Hybrid.
- Bulletin number
- T-TT-0725-23
- Component
- Back over prevention
- Summary
- TT: Some 2021- 2023 Sienna HV vehicles may duplicate an abnormal noise (Growl, Humming and/or other) from the Hybrid T/A at various vehicle speeds and normal drive conditions. Please contact TAS for diagnostic instructions to aid in resolution of the condition.
Owners of these vehicles have filed 2 complaints in the driver assistance category.
Vehicles covered
- Toyota Sienna Hybrid 2021 2021
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