Ford F-250 SD 2019 — technical service bulletin
Bulletin SSM 47537 · NHTSA communication 10149769 · issued Sep 21, 2018
Technical service bulletin
communication type
Equipment
component
2019
model years
2
vehicle entries
Official summary
2019 F-Super Duty fleet-only vehicles equipped with a telematics control unit (TCU) may have DTC B1D55 present. These vehicles are not equipped with a secondary antenna due to the fleet-only TCU not requiring a secondary antenna input. If DTC B1D55 is present, but there is no sail antenna present (roof mounted antenna with a small fin), then no repairs should be performed for this DTC.
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.