Ford Bronco 2021 — technical service bulletin
Bulletin TSB 21-2403 · NHTSA communication 10203652 · issued Nov 16, 2021
Technical service bulletin
communication type
Structure
component
2021
model years
1
vehicle entries
Official summary
Some 2021 Bronco vehicles may experience a water leak that originates from the left and/or right A-pillars and/or the windshield header. This may be due to excessive gaps in the body seams from the factory. To correct the condition, follow the Service Procedure to reseal the affected body gaps and replace the front header 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.