Gateway Module
WARNING: This page is about a different car, the 2012 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
The Instrument Cluster (IC) is the gateway module, translating messages on the HS-CAN to MS-CAN and vice versa. This allows a message to be distributed throughout both networks. The IC is the only module on this vehicle that has this ability.