{"nhtsa_id":11012177,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-01-02","date":"2024-12-01","document_id":"V-321-002 202412","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM","mfr_system":null,"summary":"Volvo Trucks has identified that some VN model vehicles equipped with auxiliary power unit batteries may experience insufficient battery system charging. This could lead to early battery failure and improper functioning of the auxiliary power systems. Follow the instructions in the attached document to upgrade the charging system.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-11012177-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-11012177-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11012177","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"VOLVO","model":"VAH","year_from":2017,"year_to":2024,"match":null,"vehicle_ids":[]},{"make":"VOLVO","model":"VHD","year_from":2017,"year_to":2024,"match":null,"vehicle_ids":[]},{"make":"VOLVO","model":"VN","year_from":2017,"year_to":2024,"match":null,"vehicle_ids":[]}],"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":[]}