Jeep Cherokee 2020 — technical service bulletin
Bulletin 21-020-20 REV. A · NHTSA communication 10181605 · issued Sep 11, 2020
Technical service bulletin
communication type
Power Train
component
2020
model years
1
vehicle entries
Official summary
Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the TCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the following Diagnostic Trouble Code (DTC) has been set:P1614 - ECU Reset-Recovery Occurred. Customers may also experience the following: An audible clunk after applying throttle from a coasting condition, predominantly in fifth and sixth gear while driving 48-72 kph (30-45 mph).
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.