{"nhtsa_id":10244752,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2023-11-03","date":"2023-10-09","document_id":"NCU - 2023070022","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM:SOFTWARE; ELECTRICAL SYSTEM","mfr_system":null,"summary":"Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has determined that the software for the engine control unit in the subject vehicles may not meet current specifications. As a result, the diagnosis for monitoring the air fuel ratio might not be activated in low load operation as intended. In addition, catalytic converter aging might not be immediately detected and so, may not illuminate a check engine Malfunction Indicator Lamp (“MIL”). After a cold start in the \"catalytic converter heating\" operating mode, misfires might occur and the check engine MIL would be illuminated. Consequently, these issues may not meet local legal requirements for on-board diagnostics and/or exhaust gas emissions. MBUSA will conduct a voluntary Emissions Recall Campaign in which an authorized Mercedes-Benz dealer will update the software in the affected vehicles.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10244752-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10244752-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10244752","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"software","name":"Software","parent":"electrical"}],"codes":[],"topics":[],"vehicles":[{"make":"MERCEDES-BENZ","model":"AMG G63","year_from":2021,"year_to":2021,"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":[]}