Ford Bronco Sport 2021–2023 — technical service bulletin
Bulletin SSM 51808 · NHTSA communication 10239627 · issued Jul 21, 2023
Technical service bulletin
communication type
Structure
component
2021–2023
model years
3
vehicle entries
Official summary
Some 2021-2023 Bronco Sport vehicles equipped with a 1.5L engine and active torque coupling differential may exhibit a hissing noise from rear liftgate area when driving between 35 to 50 MPH (56-80 Km/h). This condition could be eliminated when the vehicle is driven in slippery mode. This condition does not affect the vehicle durability and no additional diagnosis or service is required for this condition at this time. Inform the customers that they can continue to drive the vehicle and engineering is currently working on a solution for this condition that is expected in September 2023. The re
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.