Chrysler 300 2014 — technical service bulletin
Bulletin 21-031-14 · NHTSA communication 10139758 · issued Sep 26, 2014
Technical service bulletin
communication type
Power Train
component
2014
model years
2
vehicle entries
Official summary
Flash: Quick Learn Enable And P215C Output Shaft Speed, Wheel Speed Correlation Set While Braking This bulletin involves selectively erasing and reprogramming the Transmission Control Module (TCM) with new software. The following Transmission Control Module (TCM) calibration update is being released to enable the new wiTECH based ?Quick Learn? procedure to be performed anytime the transmission adaptation memory cells are cleared or addressing customer concerns of poor shift quality. It also addresses customer concerns of Malfunction Indicator Lamp (MIL) illumination and Diagnostic Trouble Code
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.