Fiat 500X 2019–2021 — technical service bulletin
Bulletin S2008000125 Rev. · NHTSA communication 10188741 · issued Feb 10, 2021
Technical service bulletin
communication type
Electrical System
component
2019–2021
model years
5
vehicle entries
Official summary
Low Beam Headlamp Out Message Displayed On EVIC Intermittently. DTC B162F-64 Or B1638-64
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.