{"nhtsa_id":10221494,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2022-09-26","date":"2022-06-18","document_id":"0810322REVA","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM; AIR BAGS","mfr_system":null,"summary":"Flash: Drivetrain Control Module (DTCM) Updates This bulletin involves reprogramming the DTCM with the latest available software. Customers may experience a ?Service 4WD message? illumination. Upon further investigation the technician may find one or more of the following DTCs have been set: C1472-92 - Transfer Case Clutch Control-Performance Or Incorrect Operation(Sales Code DHY only). If any of these DTCs C1472-92, C149D-54 or C2206-56 are present(Sales Code DHY only), proceed toStep 4of the Repair Procedure. C1463-94 - Front Axle Disconnect Control-Unexpected Operation. The customer may also experience the following:Service 4WD light illuminated. Front axle does not engage when selected.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2022/MC-10221494-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2022/MC-10221494-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10221494","components":[{"id":"air-bags","name":"Air bags","parent":null},{"id":"electrical","name":"Electrical system","parent":null}],"codes":["C1463","C1472","C149D","C2206"],"topics":[],"vehicles":[{"make":"JEEP","model":"GRAND CHEROKEE","year_from":2021,"year_to":2021,"match":"exact","vehicle_ids":["2021_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":[]}