{"nhtsa_id":603952,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1999-03-12","date":"1999-01-01","document_id":"203020","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE:DIESEL","mfr_system":null,"summary":"THE RETROFIT OF COOLANT PREHEATERS (ENGINE BLOCK HEATERS) IS NOW AVAILABLE. *YC","document":null,"url":"https://open.wenmarpro.com/bulletins/603952","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"MERCEDES BENZ","model":"129","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"MERCEDES BENZ","model":"202","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"MERCEDES BENZ","model":"208","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":[]}