LH-RH Turn Signal/Hazard Indicator
WARNING: This page is about a different car, the 2019 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
When the multifunction switch is in the LH or RH turn position or if the hazard switch is on, the BCM sends the turn indication status message to the GWM over the HS-CAN1. The GWM sends the turn indication status message to the IPC over the HS-CAN3. Upon receipt of the applicable turn signal on/off data, the IPC flashes the turn signal indicator on and off.