{"nhtsa_id":11027757,"type":"service_campaign","type_name":"Service campaign","date_added":"2026-01-22","date":"2026-01-23","document_id":"NCU - 2026010004","mfr_campaign":null,"replaces":null,"component":"ENGINE","mfr_system":null,"summary":"Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the engine electronics control unit software (ME-SFI) does not correspond to the current series production configuration. The possibility exists that a faulty calculation of the cylinder balance diagnosis counter may occur, but there would be no effects on the driving mode. MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will update the engine electronics control unit software (ME-SFI) in the affected vehicles.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11027757-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11027757-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11027757","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"MERCEDES-BENZ","model":"AMG GLC43","year_from":2020,"year_to":2020,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"AMG GLC63","year_from":2020,"year_to":2020,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"AMG GLC63 S","year_from":2020,"year_to":2020,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"GLC 300","year_from":2020,"year_to":2020,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"GLC 350 E","year_from":2020,"year_to":2020,"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":[]}