{"nhtsa_id":10159906,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2019-05-20","date":"2015-11-05","document_id":"18-082-15","mfr_campaign":null,"replaces":null,"component":"ENGINE; ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN","mfr_system":null,"summary":"Flash: Powertrain Diagnostic And System Improvements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software. The following powertrain system improvements/enhancements are included in this software release. These symptoms are broken down by vehicle. 2015 WK 3.0L engine (Sales Code EHD) ? Enhancements to remote engine start. 2015 WK 5.7L engine (Sales Code EZH) ? Enhancements to improve a slight lag or hesitation during Multi Displacement System (MDS) mode transitions. ? Enhancements to improve a slight drop in engine RPM when the vehicle is shifted to reverse or drive within 3 seconds of a cold start. ? Malfunction Indicator Lamp (MIL) illuminated with Diagnostic Trouble Code (DTC) U0140-00 - Lost Communication with Body Control Module (BCM). 2014 WD 5.7L engine (Sales Code EZH) ? Enhancements to improve a slight drop in engine RPM when the vehicle is shifted to reverse or drive within 3 seconds of a cold start. 2015 WD 5.7L engine (Sales Code EZH) ? Enhancements to remote engine start.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2015/MC-10159906-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2015/MC-10159906-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10159906","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"engine","name":"Engine","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"software","name":"Software","parent":"electrical"}],"codes":["U0140"],"topics":[],"vehicles":[{"make":"DODGE","model":"DURANGO","year_from":2014,"year_to":2015,"match":"exact","vehicle_ids":["2014_dodge_durango","2015_dodge_durango"]},{"make":"JEEP","model":"GRAND CHEROKEE","year_from":2015,"year_to":2015,"match":"exact","vehicle_ids":["2015_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":[]}