Ford Bronco 2021 — technical service bulletin
Bulletin 22B27 · NHTSA communication 10225538 · issued Oct 12, 2022
Technical service bulletin
communication type
Power Train
component
2021
model years
1
vehicle entries
Official summary
Certain 2021 Model Year Bronco Vehicles Front Driveshaft Replacement. In the affected vehicles, the front driveshaft constant-velocity (CV) joint boot material is not robust for this application and may fail under normal vehicle usage. A failed CV joint boot may result in a loss of grease and the accumulation of debris in the CV joint, leading to noise and/or vibration while driving.
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.