New dash? Are you referring to the Instrument Cluster? If you are, yes, it must me changed. MCU2's IC is subordinate to the MCU2 itself. Its connected via a ribbon cable now. The MCU1's original IC will not work with MCU2. It gets swapped out also. And the upper steering wheel buttons that rebooted MCU1's IC no longer do anything. To reboot, MCU2's IC, you must reboot, MCU2, then you also see the IC rebooting.