Description And Operation: Headlamps: Flash-To-Pass
WARNING: This page is about a different car, the 2013 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
The SCCM monitors the multifunction switch for a high beam or flash-to-pass request. When the multifunction switch is in the HIGH BEAM or FLASH-TO-PASS position, the SCCM sends a high beam_flash-to-pass request message to the BCM over the communication network indicating the request.
When the low beams are off and the flash-to-pass is requested, the headlamp bulbs and the shutters are activated for approximately 0.5 second. When the low beams are on and the flash-to-pass is requested, the shutters within the headlamps are activated as long as the multifunction switch is held in the FLASH-TO-PASS position.