{"nhtsa_id":10183277,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-11-30","date":"2020-10-21","document_id":"T-SB-0107-20","mfr_campaign":null,"replaces":null,"component":"BACK OVER PREVENTION","mfr_system":null,"summary":"TSB: Flash reprogramming allows the Electronic Control Unit (ECU) software to be updated without replacing the ECU. Flash calibration updates for specific vehicle models/ECUs are released as field-fix procedures described in individual Service Bulletins. This bulletin details the Techstream ECU flash reprogramming process and outlines use of TIS and the Calibration Update Wizard (CUW). To ensure the correct ECU software is installed, ECUs will require a Security Signature before the ECU will initialize the flash reprogramming sequence. This bulletin also details the process for acquiring a Security Signature from TIS during the Techstream ECU flash reprogramming process.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10183277-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10183277-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10183277","components":[{"id":"driver-assistance","name":"Driver assistance","parent":null},{"id":"backup-camera","name":"Backup camera","parent":"driver-assistance"}],"codes":[],"topics":[],"vehicles":[{"make":"TOYOTA","model":"RAV4 PRIME","year_from":2021,"year_to":2021,"match":"base","vehicle_ids":["2021_toyota_rav4"]},{"make":"TOYOTA","model":"SIENNA HYBRID","year_from":2021,"year_to":2021,"match":"base","vehicle_ids":["2021_toyota_sienna"]},{"make":"TOYOTA","model":"VENZA HYBRID","year_from":2021,"year_to":2021,"match":"base","vehicle_ids":["2021_toyota_venza"]}],"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":[]}