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Toyota TSB #T-TT-0725-23
2021 Toyota Sienna
TSB Document:
Affected 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.
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