Ford Mustang Mach E 2021 — technical service bulletin
Bulletin 21B53 · NHTSA communication 10202719 · issued Oct 29, 2021
Technical service bulletin
communication type
Equipment Adaptive/mobility
component
2021
model years
1
vehicle entries
Official summary
Certain 2021 Model Year Mustang Mach-E Vehicles Equipped with Phone as a Key Option Gateway Module Programming to Activate Phone as a Key- Owner Letter sent
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.