Hazard Flasher Switch
WARNING: This page is about a different car, the 2011 Ford Pickup, 2011 Ford F550 Super Duty, 2011 Ford F450 Super Duty, and 2011 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
The hazard flasher switch is mounted directly to the SCCM and operates when the ignition switch is in any position or when the key is removed. One press of the switch supplies a ground signal through the SCCM to the BCM . When the ground signal is sensed by the BCM , it turns the directional indicators on. A second press of the button releases the ground connection and turns the directional indicators off.