Technical Service Bulletin 08-065-26 — 2022 JEEP GRAND CHEROKEE 4XE

Flash: Battery Pack Control Module (BPCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● **P0607-00 - ECU Internal Performance. ● P0C78-00 - Hybrid/EV Battery System Precharge Time Too Long. ● P0CA6-00 - Hybrid/EV Battery Charging Current High.** ● P0B24-00 - Hybrid/EV Battery "A" Voltage Unstable. ● P1C5E-00 - Hybrid/EV Battery State Of Health Failed. ● P0BBE-00 - Hybrid/EV Battery Pack Voltage Variation. ● P0DAB-00 - Hybrid/EV Cell Balancing Performance. ● P0D0F-00 - Hybrid/ EV Battery Negative Contactor “A” Stuck Closed. ● P0AA1-00 - Hybrid/EV Battery Positive Contactor “A” Stuck Closed. ● P0AA4-00 - Hybrid Battery Negative Contactor Circuit Stuck Closed. Customers may also experience one or more of the following: ● **Vehicle does not start.** NOTE: **The no start condition is accompanied with one or more of the following DTCs: P0DAB-00, P0607-00, P0AA1-00, P0AA4-00, P0C78-00, P0CA6-00, P0B24-00, P1C5E-00 and/or P0BBE-00. P0BBE-00 and P0B28-00 will result in a MIL for 49 days. After 49 days of the MIL, the vehicle will no longer be allowed to start.** ● Low 12V battery causing vehicle not to start. This bulletin involves updating the BPCM with the latest available software.