Jeep Wrangler 2018–2020 — technical service bulletin
Bulletin 70801 · NHTSA communication 10187660 · issued Dec 9, 2020
Technical service bulletin
communication type
Equipment
component
2018–2020
model years
5
vehicle entries
Official summary
Warranty Bulletin D-20-23 Part Order Restiction Program - 48V Power Pack Unit (PPU) - Select 2018-2020 Jeep Wrangler (JL) and 2019-2021 RAM (DT)
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.