Chrysler 300C 2012 — technical service bulletin
Bulletin 21-033-14 · NHTSA communication 10139799 · issued Oct 22, 2014
Technical service bulletin
communication type
Electrical System
component
2012
model years
7
vehicle entries
Official summary
FLASH: MIL Illumination For P0730 And Transmission Shift Enhancements This bulletin involves selectively erasing and reprogramming the Transmission Control Module (TCM) with new software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, the technician may find that Diagnostic Trouble Code (DTC) P0730 Incorrect Gear Ratio is setting erroneously. In addition to correcting the DTC, the following Transmission Control Module (TCM) calibration improvements are now available. These updates are broken down by vehicle line and engin
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.