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Network Message Chart

WARNING: This page is about a different car, the 2017 Lincoln Navigator and 2017 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.

BCM Network Message Chart 

Broadcast Message Originating Module Message Purpose
Headlamp switch status SCCM Indicates the headlamp switch position (or fault) to the BCM. When the position is indicated as the HEADLAMPS (or a fault), the BCM provides voltage to the parking lamps and headlamps.
Headlamp high beam flash to pass SCCM Indicates to the BCM a request for the high beams or flash-to-pass.
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