{"nhtsa_id":10217727,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2022-08-15","date":"2014-07-29","document_id":"21-022-14 REV. A","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM; POWER TRAIN; EQUIPMENT","mfr_system":null,"summary":"4WD Lamp Illuminated and Diagnostic Trouble Code C140F Active in Final Drive Control Modules (FDCM) Memory This bulletin involves verifying FDCM software level and then flash reprogramming of the FDCM with new software. Customers may indicate that the ?Service 4WD? indicator in the instrument cluster is illuminated. They may also indicate that the transfer case will not shift from 4WD High, 4WD Low, and/or Neutral once the lamp is illuminated. Further investigation identifies that a Diagnostic Trouble Code C140F is stored or active in the Final Drive Control Modules (FDCM) Memory","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2014/MC-10217727-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2014/MC-10217727-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10217727","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"equipment","name":"Equipment and accessories","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":["C140F"],"topics":[],"vehicles":[{"make":"JEEP","model":"COMMANDER","year_from":2006,"year_to":2010,"match":"exact","vehicle_ids":["2006_jeep_commander","2007_jeep_commander","2008_jeep_commander","2009_jeep_commander","2010_jeep_commander"]},{"make":"JEEP","model":"GRAND CHEROKEE","year_from":2005,"year_to":2010,"match":"exact","vehicle_ids":["2005_jeep_grand-cherokee","2006_jeep_grand-cherokee","2007_jeep_grand-cherokee","2008_jeep_grand-cherokee","2009_jeep_grand-cherokee","2010_jeep_grand-cherokee"]}],"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":[]}