Ford Mustang Mach E 2021 — technical service bulletin
Bulletin TSB 22-2253 · NHTSA communication 10216835 · issued Jul 29, 2022
Technical service bulletin
communication type
Suspension
component
2021
model years
1
vehicle entries
Official summary
Some 2021 Mustang Mach-E vehicles built on or before 05-Oct-2021 may exhibit a clunk/knock noise from the rear of the vehicle when accelerating or braking in forward or reverse. This may be due to one of the rear upper trailing arm bushing blades contacting the inner core during high load. To correct the condition, follow the Service Procedure to replace the rear upper trailing arm.
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.