The seat issue has been resolved.
After the car sitting about for a long while, it needed a decent thrashing with a Tech 2 to get things going.
So the car had several programming issues that we didn't know about, from hardware items that were present but weren't 'known'.
Anyway...all sorted, works a treat now and nice to have it done.
So, if things don't work and the fuses look good, get it hooked up and checked out.