Ford Bronco 2021 — technical service bulletin
Bulletin TSB 21-2345 · NHTSA communication 10202706 · issued Oct 11, 2021
Technical service bulletin
communication type
Structure
component
2021
model years
1
vehicle entries
Official summary
Some 2021 Bronco vehicles equipped with the Big Bend or Outer Banks trim levels built on or before 06-Aug-2021 may exhibit a whistle noise originating from the front of the hood area when traveling at speeds above 30 mph (50 km/h). If the whistle noise can be eliminated by taping off the gap between the hood and grille opening, this condition may be due to the hood seal design. To correct this condition, replace the hood seal with the improved hood seal.
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.