Jeep Wrangler 2018–2021 — technical service bulletin
Bulletin S2108000143 · NHTSA communication 10221265 · issued Jun 11, 2021
Technical service bulletin
communication type
Exterior Lighting
component
2018–2021
model years
4
vehicle entries
Official summary
Right Side Head Lamp, DRL Lamp Or Turn Signal Inoperative
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.