Still working - yay!
Also discovered that there are settings to enable climate control upon unlocking the car - this was set to ON, with air conditioning and the heated steering wheel but not the seats. This explains why the last few days (its been cooler outside) that the wheel was on when getting in. It may also explain why it appeared to turn on the wheel when putting on the mirror heaters - as usually the sequence was get in - notice fogged mirrors so activate, then grab the wheel to move off. The wheel was therefore heating from unlock.
Have also proven that the phone - S23 std, does NOT have UWB but will still open and start the car using NFC. You just have to put the phone on the trailing end of the front door handle to unlock, then drop it into the charging tray to start the car. So it is feasible to use the phone as a key provided you get close before unlocking (or unlock via the app from afar).
We are 1000 miles in now. A full 100% charge is reporting circa 215 miles range, a mix of country A and B roads and a bit of dual carriageway is returning about that quite accurately.