SSM 51321

Service Bulletin Details

Public Details for: SSM 51321

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 log


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2022 FORD EXPEDITION
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2018 FORD EXPEDITION 
SSM 51321
2018-2022 Expedition - Headlamps Turn On By Themselves When Vehicle
Is Off - DTC B1533
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. Switch and/or module replacement will
not resolve this condition. Headlamp operation is not affected while the vehicle is ON. A new headlamp
switch is currently under development to correct this condition. Let the customer know they can continue
to drive the vehicle and schedule a follow-up appointment in May 2023, when parts are expected to
become available. Follow up with the customer to confirm the appointment once OASIS is updated with
the repair information.

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