{"nhtsa_id":11013884,"type":"warranty_extension","type_name":"Warranty extension","date_added":"2025-02-06","date":"2025-01-31","document_id":"EW - Engine Thermostat","mfr_campaign":null,"replaces":null,"component":"ENGINE","mfr_system":null,"summary":"This NCU supersedes the prior NCUs issued on December 1, 2023 and February 06, 2024 and includes additional MY 2019 AMG G63 vehicles. In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA, LLC (“MBUSA”) is extending the warranty coverage on the engine thermostat (including software update) installed in certain Model Year (“MY”) vehicles (with engines M176, M177, M178) listed below from the original New Vehicle Limited Warranty of 4 years/50,000 miles to 15 years/150,000 miles (whichever occurs first), due to the following condition In the affected vehicles, the sealing ring in the engine thermostat could detach, causing a delay in the heating of the engine coolant. This may also cause the check engine Malfunction Indicator Lamp (‘MIL’) to illuminate.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11013884-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11013884-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11013884","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"MERCEDES-BENZ","model":"AMG C63","year_from":2020,"year_to":2021,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"AMG C63 S","year_from":2020,"year_to":2021,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"AMG C63 S","year_from":2023,"year_to":2023,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"AMG E63","year_from":2020,"year_to":2021,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"AMG E63","year_from":2023,"year_to":2023,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"AMG E63 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4MATIC","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":[]}