Ford Mustang Mach E 2021 — technical service bulletin
Bulletin TSB 22-2138 · NHTSA communication 10210470 · issued Apr 21, 2022
Technical service bulletin
communication type
Suspension
component
2021
model years
1
vehicle entries
Official summary
Some 2021 Mustang Mach-E GT vehicles may exhibit a Suspension Fault Speed Limited To 80 MPH (or 120 km/h) message or Driver Selectable Suspension Fault Service Required message in the IPC with diagnostic trouble code (DTC) C1121:64. This may be due to the vehicle dynamics module (VDM) software. To correct the condition, follow the service procedure to reprogram the VDM.
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.