{"nhtsa_id":10215966,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2022-07-18","date":"2021-01-30","document_id":"08-019-21","mfr_campaign":null,"replaces":null,"component":"BACK OVER PREVENTION; SEAT BELTS; STRUCTURE; TRAILER HITCHES; ELECTRICAL SYSTEM; LANE DEPARTURE; EXTERIOR LIGHTING","mfr_system":null,"summary":"Flash: Anti-Lock Brake System (ABS) Module Updates This bulletin involves reprogramming the ABS module with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one of the following Diagnostic Trouble Code (DTC) has been set: B1783-01 - Stop Lamp Control - General Electrical Failure. The customer may also comment or note that the DTC set after the installation of a Mopar or an aftermarket trailer brake controller.The 12 volt back feed of the aftermarket trailer brake controller into the redundant connection between the Body Control Module (BCM) and the Anti Lock Brake Module (ABS) is causing a design intent diagnostic detection of the stop lamps.Software enhancement includes:Removal of the warning lamp associated with this DTC so an aftermarket trailer brake controller can be used.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10215966-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10215966-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10215966","components":[{"id":"structure-body","name":"Body and frame","parent":null},{"id":"driver-assistance","name":"Driver assistance","parent":null},{"id":"electrical","name":"Electrical system","parent":null},{"id":"lighting","name":"Lighting","parent":null},{"id":"seat-belts","name":"Seat belts","parent":null},{"id":"trailer-hitch","name":"Trailer hitch","parent":null},{"id":"backup-camera","name":"Backup camera","parent":"driver-assistance"}],"codes":["B1783"],"topics":[],"vehicles":[{"make":"JEEP","model":"WRANGLER","year_from":2020,"year_to":2020,"match":"exact","vehicle_ids":["2020_jeep_wrangler"]}],"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":[]}