Condition of intermittent headlamp operation while the vehicle is OFF and have diagnostic trouble code...
Ford technical service bulletin SSM 51617 for 2018-2022 Ford Expedition.
- Bulletin number
- SSM 51617
- Component
- Exterior lighting
- Summary
- Some 2018-2022 Expedition 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 part number: 11654). Refer to Workshop Manual, Section 417-01.
Owners of these vehicles have filed 45 complaints in the lights category.
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