Jeep Grand Cherokee 4XE 2023 — technical service bulletin
Bulletin 08-359-25 · NHTSA communication 11025016 · issued Oct 28, 2025
Technical service bulletin
communication type
Electrical System
component
2023
model years
1
vehicle entries
Official summary
Flash: Hybrid Control Processor (HCP) and Auxiliary Hybrid Control Processor (AHCP) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code (DTC) has been set in the Hybrid Control Processor (HCP) module: ● P16F0-00 - SPI Comm Hardware Fault. Customers may also comment on one or more of the following: ● **Low/weak 12V battery or a no start condition due to voltage being under 10.5V. ● Unable to charge vehicle while key is off.** ● Shifts rough occasionally when coming down to a st
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.