{"nhtsa_id":11018020,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-05-06","date":"2025-04-29","document_id":"18-022-25","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN","mfr_system":"Powertrain Control Module","summary":"\"Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P1CEA - Boost Side EVAP Purge System Performance. ● P2AF6 - Dual Starter Relay Stuck. ● P026E - Charge Air Cooler Coolant Pump Performance. Customers may also comment on one or more of the following: ● Low battery State of Charge (SoC) leading to battery replacement. ● Vehicle does not restart after an Engine Stop Start (ESS) event but will restart after an ignition cycl This bulletin involves reprogramming the PCM with the latest available software.\"","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11018020-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11018020-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11018020","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":["P026E","P1CEA","P2AF6"],"topics":[],"vehicles":[{"make":"JEEP","model":"GRAND WAGONEER","year_from":2025,"year_to":2025,"match":"exact","vehicle_ids":["2025_jeep_grand-wagoneer"]},{"make":"JEEP","model":"WAGONEER","year_from":2025,"year_to":2025,"match":"exact","vehicle_ids":["2025_jeep_wagoneer"]}],"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":[]}