Ford Bronco 2021 — technical service bulletin
Bulletin SSM 49909 · NHTSA communication 10198652 · issued Jun 24, 2021
Technical service bulletin
communication type
Electrical System
component
2021
model years
1
vehicle entries
Official summary
Some 2021 Bronco vehicles may exhibit a No Key Detected message displayed in the instrument cluster followed by a double horn chirp immediately after starting the vehicle. The condition is due to a software issue in the driver door module (DDM) and/or the passenger door module (PDM). Replacement or reprogramming of the DDM and/or PDM will not resolve the issue. This condition does not affect vehicle durability and no additional diagnosis or service is required for this condition at this time. Inform customers that they can continue to drive the vehicle and engineering is currently working on a
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.