Jeep Cherokee 2018 — technical service bulletin
Bulletin 1804622 · NHTSA communication 10223160 · issued Mar 5, 2022
Technical service bulletin
communication type
Engine and Engine Cooling
component
2018
model years
1
vehicle entries
Official summary
Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code (DTC):P06EF - Engine Restart Performance. Customers may experience the following:Long engine crank after an Engine Stop/Start (ESS) event.
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.