{"nhtsa_id":11025940,"type":"service_campaign","type_name":"Service campaign","date_added":"2025-12-02","date":"2025-11-13","document_id":"SC352_OWNR","mfr_campaign":"SC352","replaces":null,"component":"ELECTRICAL SYSTEM","mfr_system":null,"summary":"VOLUNTARY SERVICE CAMPAIGN: OWNER NOTIFICATION (SC352) - This document is the owner notification advising that Kia is conducting a Voluntary Service Campaign on certain 2025-2026 MY Carnival Hybrid (HEV) vehicles to update the Heating, Ventilation, and Air Conditioning (HVAC) control software to prevent excessive discharging of the 12V battery by the Positive Temperature Coefficient (PTC) heater under certain operating conditions.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11025940-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11025940-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11025940","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"KIA","model":"CARNIVAL HYBRID","year_from":2025,"year_to":2026,"match":"base","vehicle_ids":["2025_kia_carnival","2026_kia_carnival"]}],"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":[]}