Ford Bronco 2021 — technical service bulletin
Bulletin TSB 22-2018 · NHTSA communication 10206872 · issued Jan 28, 2022
Technical service bulletin
communication type
Visibility
component
2021
model years
1
vehicle entries
Official summary
Some 2021 Broncos may exhibit a whistle noise coming from the front center of the vehicle and/or the climate control housing. This may be due to the sealing on the climate control case. To correct the condition, follow the Service Procedure to apply butyl tape to cover small holes in the fresh air inlet door.
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.