{"nhtsa_id":10052653,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2013-08-28","date":"2013-06-01","document_id":"SF-483-A","mfr_campaign":null,"replaces":null,"component":"PARKING BRAKE","mfr_system":null,"summary":"DAIMLER TRUCKS: ON CERTAIN TRUCKS, ENGINE MAY NOT RECEIVE COMPLETE PARK BRAKE ENGAGED INPUT SIGNAL FROM ELECTRONIC CONTROL CENTER (ECC), AND WILL BE MODIFIED, BY MOVING PARK BRAKE INPUT SIGNAL TO AN INDEPENDENT AIR SWITCH. MODEL 2010-2013 4700, 4900, 6900. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10052653","components":[{"id":"brakes","name":"Brakes","parent":null},{"id":"parking-brake","name":"Parking brake","parent":"brakes"}],"codes":[],"topics":[],"vehicles":[{"make":"WESTERN STAR","model":"4700","year_from":2010,"year_to":2013,"match":"exact","vehicle_ids":["2010_western-star_4700","2011_western-star_4700","2012_western-star_4700","2013_western-star_4700"]},{"make":"WESTERN STAR","model":"4900","year_from":2010,"year_to":2013,"match":"exact","vehicle_ids":["2010_western-star_4900","2011_western-star_4900","2012_western-star_4900","2013_western-star_4900"]},{"make":"WESTERN STAR","model":"6900","year_from":2010,"year_to":2013,"match":"exact","vehicle_ids":["2010_western-star_6900","2011_western-star_6900","2012_western-star_6900","2013_western-star_6900"]}],"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":[]}