Chrysler 300 2013–2016 — technical service bulletin
Bulletin UB4 Rev. 4 · NHTSA communication 10173339 · issued Feb 25, 2020
Technical service bulletin
communication type
Engine
component
2013–2016
model years
8
vehicle entries
Official summary
Revised Emissions Recall UB4 Evaporative Emissions Canister
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.