Jeep Wrangler 2021 — technical service bulletin
Bulletin 0803421 · NHTSA communication 10220950 · issued Mar 9, 2021
Technical service bulletin
communication type
Electrical System
component
2021
model years
1
vehicle entries
Official summary
Flash: Body Control Module (BCM) Updates This bulletin involves reprogramming the BCM with the latest available software. Customer will notice that the rear wiper blade will not return to the park position when the wiper are turned off.
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.