Hi @Andrew Daniels
welcome to the forum mate. I had exactly the same issue with my new 45 S when it arrived here in Oz. Check engine light came on (and off) regularly, turned out to be a simple seset of the codes as there was nothing wrong with the vehicle. Stealership told me that it happens sometimes that the long journey out here on the boat can play havoc with the electrics/battery/systems. I had a 'pandemic built' car, so it spent a long time waiting for various parts in the factory lot before it even made its way onto the boat, so not surprising. But definitely take it straight back into the dealer and get them to check and clear if thats what it is.