High Beams

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 on and the BCM receives a request for high beams, the headlamps remain powered and the shutter within each headlamp is activated. This changes the headlamp beam pattern to illuminate a greater distance.

The BCM also provides an overload protection of the high beam output circuits. When an excessive current draw is detected, the BCM disables the affected high beam circuit driver. REFER to FIELD EFFECT TRANSISTOR (FET) PROTECTION .