Ford Mustang Mach E 2021–2023 — technical service bulletin
Bulletin TSB 25-2277 · NHTSA communication 11019887 · issued Jun 25, 2025
Technical service bulletin
communication type
Vehicle Speed Control
component
2021–2023
model years
3
vehicle entries
Official summary
Some of the vehicles listed in the Model statement above may exhibit at least one of the following conditions: *Speedometer stays at 1 mph (1 km/h) when the vehicle is stopped *Speedometer lags during deceleration and acceleration *Car image in the center of the IPC is always displayed *Speedometer is delayed in displaying on bootup *IPC bootup is delayed when attempting to start the vehicle directly from accessory mode *IPC is stuck on the charging/accessory screen when placed in Drive/ready to drive *After vehicle start up, the lane keeping system status telltale briefly displays *Buzz noise
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.