{"nhtsa_id":11036626,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-09-02","date":"2026-08-21","document_id":"SC373_TSB","mfr_campaign":"SC373","replaces":null,"component":"VISIBILITY/WIPER; ENGINE","mfr_system":null,"summary":"TECHNICAL SERVICE BULLETIN: VOLUNTARY SERVICE CAMPAIGN: 3-WAY COOLANT VALVE REPLACEMENT (SC373) - This bulletin provides information to replace the 3-way coolant valve. In addition, inspect the 3-way coolant valve harness connector for corrosion, and if necessary, replace the harness connector on certain 2024-2026MY EV6 (CV, CVa) vehicles produced from August 07, 2023 through June 18, 2026. The 3-way coolant valve in the subject vehicles may become damaged and result in a coolant leak. As a result, corrosion may also be present in the 3-way coolant valve harness connector. An inoperative 3-way coolant valve or corrosion within the harness connector may result in reduced Heating, Ventilation, and Air Conditioning (HVAC) performance and/or in the illumination of the “Check electric vehicle system” or “Refill Coolant” warning messages in the instrument cluster.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11036626-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11036626-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11036626","components":[{"id":"engine","name":"Engine","parent":null},{"id":"visibility","name":"Glass, wipers and mirrors","parent":null},{"id":"wiper","name":"Wipers and washers","parent":"visibility"}],"codes":[],"topics":[],"vehicles":[{"make":"KIA","model":"EV6","year_from":2024,"year_to":2026,"match":"exact","vehicle_ids":["2024_kia_ev6","2025_kia_ev6","2026_kia_ev6"]}],"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":[]}