Jumped in the rig (17 expedition EL XLT) to head to church this morning, and the dash LCD screens on either side of the speedometer began flashing entirely on and off. Speedometer and blinkers worked fine and lit correctly. Sync 3 screen radio also working fine. Turned around and drove back home, didn't want to risk shutting it off on sdie of road in case it didn't restart. I shut it off, pulled key, opened drivers door, waited till everything powered down. Restarted truck and same behavior. Screens power on for 1 second, then off for 5,repeating this pattern. Battery was replaced 3 months ago, other than that and windshield wipers, everything is stock. Hasn't even been tuned for a year, which is funny because I was just thinking I'd load my 5 star tune back on this weekend. Anybody seen this happen? 53k miles on the truck, it runs fine otherwise. I disconnected the battery as well, but no change in behavior. It's CPO but I don't believe that covers electronics so I might really be screwed here if the cluster is dead.