High Beam Indicator
WARNING: This page is about a different car, the 2017 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
The high beam indicator informs the driver that the high beams are turned on. The IPC receives the high beam indicator request from the GWM over the HS-CAN3. The GWM receives the high beam indicator request from the BCM over the HS-CAN1.