{"nhtsa_id":10234336,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2023-04-17","date":"2023-03-23","document_id":"T-TT-0725-23","mfr_campaign":null,"replaces":null,"component":"BACK OVER PREVENTION","mfr_system":null,"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.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10234336-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10234336-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10234336","components":[{"id":"driver-assistance","name":"Driver assistance","parent":null},{"id":"backup-camera","name":"Backup camera","parent":"driver-assistance"}],"codes":[],"topics":[],"vehicles":[{"make":"TOYOTA","model":"SIENNA HYBRID","year_from":2021,"year_to":2021,"match":"base","vehicle_ids":["2021_toyota_sienna"]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}