Chrysler 300 2018 — technical service bulletin
Bulletin 1811822 · NHTSA communication 10221491 · issued Jun 17, 2022
Technical service bulletin
communication type
Back Over Prevention
component
2018
model years
2
vehicle entries
Official summary
Flash: Powertrain Diagnostic and System Improvements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination and Adaptive Cruise Control inoperative. Upon further investigation the technician may find that the following Diagnostic Trouble Code (DTC) has been set: P0573 - Brake Switch 1 Stuck Off. Other software enhancements include:Engine REV stationary exhaust noise restrictions.
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.