Change 4WD Lube
WARNING: This page is about a different car, the 2018 Ford F-550 Super Duty, 2018 Ford F-450 Super Duty, 2018 Ford F-350 Super Duty, and 2018 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
The message center provides the change 4WD lube to inform the driver to change the transfer case lube. The IPC receives the 4x4 high/low status message from the GWM over the HS-CAN3. The GWM receives the 4x4 high/low status message from the TCCM over the HS-CAN2.