Jeep Grand Wagoneer 2024 — technical service bulletin
Bulletin 18-055-24 · NHTSA communication 11001822 · issued Jun 15, 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 one or more of the following Diagnostic Trouble Codes (DTCs): ● P00C6-00 - Fuel Rail Pressure Too Low - Engine Cranking. ● P0300-00 - Multiple Cylinder Misfire. Customers may also comment on one or more of the following: ● Fully Autonomous Parking Assist (FAPA) is not deactivated when accelerator pedal is pressed. ● Vehicle is not heating up fast enough at freezing temperatures. This bulletin involves reprogramming the PCM with the latest av
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.