{"nhtsa_id":10240203,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2023-08-02","date":"2023-07-27","document_id":"ELW - M278 Cat","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"This NCU replaces the prior NCU issued on May 11, 2023, and clarifies replacement part information. In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, is extending the warranty coverage on the catalytic converter system in certain Model Year (“MY”) vehicles fitted with the M278 8-cylinder engine listed below: - MY2011: Original New Vehicle Limited Warranty of 4 years / 50,000 miles New Vehicle to 13 years / 156,000 miles (whichever occurs first) - MY2012: Original New Vehicle Limited Warranty of 4 years / 50,000 miles New Vehicle to 12 years / 144,000 miles (whichever occurs first) - MY2013: Original New Vehicle Limited Warranty of 4 years / 50,000 miles New Vehicle to 11 years / 132,000 miles (whichever occurs first) - MY2014 – MY2020: Original New Vehicle Limited Warranty of 4 years / 50,000 miles New Vehicle to 10 years / 120,000 miles (whichever occurs first)","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10240203-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10240203-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10240203","components":[{"id":"engine","name":"Engine","parent":null},{"id":"exhaust-emissions","name":"Exhaust and emissions","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"MERCEDES-BENZ","model":"CL550","year_from":2011,"year_to":2014,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"CLS 550","year_from":2016,"year_to":2016,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"CLS 550","year_from":2018,"year_to":2018,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"CLS550","year_from":2012,"year_to":2015,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"CLS550","year_from":2017,"year_to":2017,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"E550","year_from":2012,"year_to":2017,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"S550","year_from":2012,"year_to":2017,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"S550 4MATIC","year_from":2016,"year_to":2017,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"SL 550","year_from":2018,"year_to":2020,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"SL550","year_from":2013,"year_to":2017,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-MAYBACH","model":"S550","year_from":2017,"year_to":2017,"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":[]}