Jeep Wrangler 2021 — technical service bulletin
Bulletin 08-143-21 · NHTSA communication 10218589 · issued Aug 26, 2021
Technical service bulletin
communication type
Electrical System
component
2021
model years
1
vehicle entries
Official summary
Flash: Instrument Panel Cluster (IPC) Updates This bulletin involves reprogramming the IPC with the latest available software. Customers may comment on the following:Vehicle doesn't switch to EV mode. Front passenger seat belt chime may still ding approximately 20 seconds after the belt has been fastened. Battery was dead after leaving the vehicle overnight. Battery bar gauge graphics indicates an empty charge while showing full charge % and full range.The battery percentage and range are accurate and are not affected by this issue, only the graphical bar is wrong. After starting the vehicle o
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.