Jeep Wrangler 2021 — technical service bulletin
Bulletin S2208000178 · NHTSA communication 10227722 · issued Oct 27, 2022
Technical service bulletin
communication type
Electrical System
component
2021
model years
1
vehicle entries
Official summary
Battery Warning Lamp On, Battery Charging Voltage Fluctuates
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.