{"nhtsa_id":10187790,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-03-01","date":"2021-01-29","document_id":"LI01.30-P-072328","mfr_campaign":null,"replaces":null,"component":"EQUIPMENT; ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"Check engine light illuminated. Engine runs rough. Poor shifting or jerking when accelerating. Fault codes stored related to mixture formation or injector quantity adjustment. Misfire faults may also be present. Leaking valve seat in cylinder head. Inspect cylinder head for leakage and valve seat damage. Replace cylinder head if necessary.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10187790-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10187790-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10187790","components":[{"id":"engine","name":"Engine","parent":null},{"id":"equipment","name":"Equipment and accessories","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"MERCEDES-BENZ","model":"MERCEDES-BENZ","year_from":null,"year_to":null,"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":[]}