Key battery warning on dash?

23 q8 etron however I’m sure this is relevant since the etron launch.

Getting the low key fob battery warning on dash. Changed battery out for new one, still getting the warning. I checked the voltage of the new battery, 3.25v. I checked the voltage of the old battery, 2.92v. Does a fault code need cleared for a low keyfob battery? (Hasn’t done in my past Audi models) Or is there a key issue with etron keys has anyone heard of?

Thanks in advance