{"nhtsa_id":11028531,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-02-06","date":"2026-02-03","document_id":"LI49.10-P-080201","mfr_campaign":null,"replaces":null,"component":"ENGINE","mfr_system":null,"summary":"Complaint Check engine light illuminate, or previously on One of the below Exhaust Flap fault codes stored in PTCU N127: P13C273 P13C278 P140473 Cause Various Remedy Model year 2024 254 and 167 with engine M254 -Update software of N127 PTCU. New software: 254- A2549022611 167- A2549022811 -Clear fault codes and check operation of the exhaust flap. Models with M256, or models with M254 after SW update -Check exhaust flap for free movement via actuation. -Remove flap actuator and check movement of flap in exhaust pipe. Replace exhaust pipe section if flap is binding. -Replace flap actuator if above checks are ok. If fault code returns after performing the above steps, open a TIPS case with the powertrain team. Note: Codes P13C273 and P13C278- Right side flap Code P140473- Left side flap","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11028531-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11028531-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11028531","components":[{"id":"engine","name":"Engine","parent":null}],"codes":["P13C2","P1404"],"topics":[],"vehicles":[{"make":"MERCEDES-BENZ","model":"AMG CLE53","year_from":2024,"year_to":2024,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"AMG CLE53 4MATIC+","year_from":2024,"year_to":2025,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"AMG CLE53 4MATIC+ CABRIOLET","year_from":2025,"year_to":2025,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"AMG E 53 4MATIC+ WAGON","year_from":2025,"year_to":2025,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"AMG GLC43","year_from":2024,"year_to":2024,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"AMG GLC43 4MATIC","year_from":2024,"year_to":2025,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"AMG GLC43 4MATIC COUPE","year_from":2024,"year_to":2025,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"AMG GLC63 S E","year_from":2024,"year_to":2025,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"AMG GLC63 S E 4MATIC+","year_from":2025,"year_to":2026,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"AMG GLC63 S E 4MATIC+ COUPE","year_from":2025,"year_to":2026,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"AMG GLE53 4MATIC+","year_from":2024,"year_to":2025,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"AMG GLE53 4MATIC+ COUPE","year_from":2025,"year_to":2025,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"AMG GLE63 S 4MATIC+","year_from":2024,"year_to":2024,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"AMG GLE63 S 4MATIC+ COUPE","year_from":2025,"year_to":2025,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"CLE 300","year_from":2024,"year_to":2024,"match":"base","vehicle_ids":["2024_mercedes-benz_cle"]},{"make":"MERCEDES-BENZ","model":"CLE 300 4MATIC","year_from":2024,"year_to":2025,"match":"base","vehicle_ids":["2024_mercedes-benz_cle","2025_mercedes-benz_cle"]},{"make":"MERCEDES-BENZ","model":"CLE 300 4MATIC CABRIOLET","year_from":2024,"year_to":2025,"match":"base","vehicle_ids":["2024_mercedes-benz_cle","2025_mercedes-benz_cle"]},{"make":"MERCEDES-BENZ","model":"CLE 450","year_from":2024,"year_to":2024,"match":"base","vehicle_ids":["2024_mercedes-benz_cle"]},{"make":"MERCEDES-BENZ","model":"CLE 450 4MATIC","year_from":2024,"year_to":2025,"match":"base","vehicle_ids":["2024_mercedes-benz_cle","2025_mercedes-benz_cle"]},{"make":"MERCEDES-BENZ","model":"CLE 450 4MATIC CABRIOLET","year_from":2024,"year_to":2025,"match":"base","vehicle_ids":["2024_mercedes-benz_cle","2025_mercedes-benz_cle"]},{"make":"MERCEDES-BENZ","model":"E 350","year_from":2024,"year_to":2025,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"E 350 4MATIC","year_from":2024,"year_to":2025,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"E 450","year_from":2024,"year_to":2024,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"E 450 4MATIC","year_from":2024,"year_to":2025,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"E 450 4MATIC ALL-TERRAIN","year_from":2024,"year_to":2025,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"E53 E 4MATIC+","year_from":2025,"year_to":2025,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"GLC 300","year_from":2024,"year_to":2025,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"GLC 300 4MATIC","year_from":2024,"year_to":2025,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"GLC 300 4MATIC COUPE","year_from":2024,"year_to":2025,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"GLC 350 E 4MATIC","year_from":2025,"year_to":2025,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"GLE 350","year_from":2024,"year_to":2024,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"GLE 350 4MATIC","year_from":2024,"year_to":2025,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"GLE 450","year_from":2024,"year_to":2024,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"GLE 450 4MATIC","year_from":2025,"year_to":2025,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"GLE 450 4MATIC COUPE","year_from":2025,"year_to":2025,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"GLE 450E 4MATIC","year_from":2024,"year_to":2025,"match":null,"vehicle_ids":[]},{"make":"MERCEDES-BENZ","model":"GLE 580 4MATIC","year_from":2024,"year_to":2025,"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":[]}