Ford Explorer 2020–2021 — technical service bulletin
Bulletin SSM 50106 · NHTSA communication 10201589 · issued Sep 10, 2021
Technical service bulletin
communication type
Equipment
component
2020–2021
model years
4
vehicle entries
Official summary
Some 2020-2021 Explorer/Aviator vehicles may exhibit the A/C blowing warm air with DTC P0645 present in the heating ventilation and air conditioning (HVAC) module. This may be due to spread terminal/terminal pushout in wire harness 14290 and on the corresponding pins to the body control module C (BCMC). Before replacement of the BCMC, disconnect all connectors from the BCMC and check the BCMC pins and wire terminals for damage. Refer to Workshop Manual (WSM), Section 419-10. If spread terminals or terminal pushout is present, repair as necessary. Refer to Wiring Diagram, Cell 005 for repair pr
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.