Jeep Grand Wagoneer 2024 — technical service bulletin
Bulletin 18-056-24 REV. A · NHTSA communication 11009471 · issued Oct 22, 2024
Technical service bulletin
communication type
Power Train
component
2024
model years
2
vehicle entries
Official summary
"Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC): ● P00C6-00 - Fuel Rail Pressure Too Low - Engine Cranking. Customers may also comment on one or more of the following: ● Fully Autonomous Parking Assist (FAPA) is not deactivated when the accelerator pedal is pressed. ● Vehicle is not heating up fast enough at freezing temperatures This bulletin involves reprogramming the PCM 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.