Ford Explorer 2020–2023 — technical service bulletin
Bulletin SSM 51845 · NHTSA communication 10240724 · issued Aug 4, 2023
Technical service bulletin
communication type
Exterior Lighting
component
2020–2023
model years
4
vehicle entries
Official summary
Some 2020-2023 Explorer vehicles may exhibit a condition of intermittent headlamp operation while the vehicle is OFF and have diagnostic trouble code (DTC) B1533 stored in the body control module (BCM). This may be due to the internal logic within the headlamp switch. To correct this condition, replace the headlamp switch (service base PN: 11654). Refer Workshop Manual, Section 417-01.
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.