BLIS / CTA Error Message

[sodbuster88]

Hoping to get some ideas. For a several months I’ve been getting an intermittent error message on my gauge cluster regarding a problem with BLIS / CTA. My Ford app has hundreds of notifications of this error by now. Happens when I put it in gear after starting. There are no DTC codes thrown. I’ve had three different dealers look at it and the last one even executed TSB #23-2040 to no avail. ‘21 Lariat with 502A. All dealers tell me they can’t do anything with out a DTC code. I’ve personally taken both tail lights out, disconnected, checked all connectors an inspected all modules for moisture or other contamination. All looks fine. Did the same for the rear bumper sensors and added dielectric grease. Still getting this intermittently and when I get it, the system is disabled. No patterns, common behaviors or other weird environmental conditions that I can tell is contributing.

Anyone else have this?

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