Chrysler 300 2015 — technical service bulletin
Bulletin 21-017-15 · NHTSA communication 10144847 · issued Mar 21, 2015
Technical service bulletin
communication type
Power Train
component
2015
model years
2
vehicle entries
Official summary
Flash: W5A580 Transmission Shift Enhancements This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software. A small number of customers may experience one or more of the following conditions. These symptoms are broken down by engine application. 3.6L engine (sales code ERB) ? Less than desired shift quality or elevated transmission temperatures during sport or track driving. ? Delayed shifting in hot ambient temperatures or during aggressive and Wide Open Throttle (WOT) driving. 5.7L engine (sales code EZH) ? Delayed shifting in hot ambient temp
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.