Jeep Wrangler 2021 — technical service bulletin
Bulletin 0824923 · NHTSA communication 10248940 · issued Nov 21, 2023
Technical service bulletin
communication type
Exterior Lighting
component
2021
model years
1
vehicle entries
Official summary
Flash: Battery Pack Control Module (BPCM) Diagnostic and System Update Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ? P0607-00 - ECU Internal Performance. ? P0C78-00 - Hybrid/EV Battery System Precharge Time Too Long. This bulletin involves updating the BPCM with the latest available software.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.