2015 Cub Cadet Challenger 500 didgital dash stays on..

[Overlander]

After turning 2 batteries to water over last winter, I found that my digital dash display is staying on with the key removed. I was originally thinking the issue originated from the ignition cylinder but I'm now thinking its the ECU controller box under the hood. One of the unserviceable relays is making a weird sound when I remove the key. I have both batteries up to full charge and discovered the display issue last week when I saw the lights on in the dark.. Do any of you have any input on this issue? Ignition or controller.. Any help before just ordering parts would be helpful  The controller is $140  not sure on the ignition.. Thanks in advance..