{"nhtsa_id":10254336,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2024-05-06","date":"2024-04-30","document_id":"24-01-034H","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM","mfr_system":null,"summary":"This bulletin provides the procedure to update the BMS (Battery Management System), MCU (Motor Control Unit), VCULDC (Vehicle Control Unit / Low DC-DC Converter) and IGPM (Integrated Gateway Power Module) to enhance the battery diagnostics logic for 2020-21MY IONIQ Electric (AE EV) vehicles.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-10254336-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-10254336-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10254336","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"HYUNDAI","model":"IONIQ","year_from":2020,"year_to":2020,"match":"exact","vehicle_ids":["2020_hyundai_ioniq"]}],"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":[]}