Technical Service Bulletin 08-128-25 REV. B — 2025 JEEP WAGONEER S

Flash: Battery Pack Control Module (BPCM) Updates 6B3 Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set one or more the following Diagnostic Trouble Codes (DTCs): ● **P0AA7-00 - Hybrid/EV Battery Pack "A" Voltage Isolation Sensor. ● P1614-00 - ECU Reset/Recovery Occurred. ● B1A8A-00 - Multi-Module VIN Handshake Failure. ● P1CDB-00 - Hybrid/EV Wakeup Control 1 Output Circuit Short To Battery. ● P1E25-00 - EV Battery Failure Level 2. ● P0D10-00 - Hybrid/EV Battery Negative Contactor A Stuck Open. ● P0D09-00 - Hybrid/EV Battery Positive Contactor A Stuck Open.** ● P0DE6-00 - Hybrid/EV Battery Pack Cell Voltage Low. NOTE: Active or stored. ● P1DAF - Incompatible Limp In Action Requested. NOTE: Active or stored. ● P1CDE-00 – Hybrid/EV Wakeup Control 2 Output Circuit Short to Ground. ● P1CDA-00 – Hybrid/EV Wakeup Control 1 Output Circuit/Open. ● U00C6-00 – Lost Communication With AIR Pressure Sensor. ● P0F00-00 - Hybrid/EV Battery Module 1 Performance. ● P0F01-00 - Hybrid/EV Battery Module 2 Performance. ● P0F02-00 - Hybrid/EV Battery Module 3 Performance. ● P0F03-00 - Hybrid/EV Battery Module 4 Performance. ● P0F04-00 - Hybrid/EV Battery Module 5 Performance. ● P0F05-00 - Hybrid/EV Battery Module 6 Performance. ● P0F06-00 - Hybrid/EV Battery Module 7 Performance. ● P0F07-00 - Hybrid/EV Battery Module 8 Performance. ● P0F08-00 - Hybrid/EV Battery Module 9 Performance. ● P0F09-00 - Hybrid/EV Battery Module 10 Performance. ● P0F0A-00 - Hybrid/EV Battery Module 11 Performance. ● P0F0B-00 - Hybrid/EV Battery Module 12 Performance. ● P0F0C-00 - Hybrid/EV Battery Module 13 Performance. ● P0CA6-00 - Hybrid/EV Battery Charging Current High NOTE: If the following DTCs are present/active in the BPCM, Battery Pack replacement will be required. Guided Diagnostics will prompt you for the repair action if the diagnostic is present on the vehicle. ● P0ADB-00 - Hybrid/EV Battery Positive Contractor A Control Circuit Low. ● P0AE2-00 - Hybrid/EV Battery Precharge Contactor Circuit Stuck Closed. ● P0AA1-00 - Hybrid/EV Battery Positive Contactor "A" Stuck Closed. ● P0FF8-00 - Hybrid/EV Battery Precharge Contactor Circuit "B" Stuck Closed. Customers may also comment on one or more of the following: ● **Vehicle will not start. ● A warning message will appear in the Instrument Panel Cluster (IPC) informing the driver to stop safely because the vehicle will be shutting down soon.** ● Wrench icon is illuminated on the IPC. ● Vehicle will not enter Drive Ready Mode. This bulletin also includes the following software enhancements: ● **Software enhancements to prevent multiple DTCs from falsely setting. ● Improved battery State of Charge (SoC) accuracy in off-nominal conditions.** ● Bootloader update to prevent battery disconnect unit damage. ● Improvements in detecting pre-existing battery disconnect unit damage. ● Charging related enhancements that may lead to DTC P0CA6 falsely setting This bulletin involves reprogramming the IDCM, BPCM, MCP A, MCP B and the EVCU with the latest available software and then, if needed, performing a Wheel End Disconnect Position Learn routine