Grade Assist
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.
The grade assist indicator informs the driver the grade assist function is turned on and is in ready mode. The IPC receives the transmission shift mode request message from the GWM over the HS-CAN3. The GWM receives the transmission shift mode request message from the PCM over the HS-CAN1.