Update:
I dc'd the battery and left it 30 mins before recon. and it worked fine. Infact, it even wiped the flashing airbag fault light :D
I also had a bluetooth obd onboard at the time with the torque pro app running but im not sure if it had anything to do with the fix.. but who knows, it...
Hi,
I was doing a bit on work on the k12 the other day and I dc'd the battery to make a bit of space in the engine bay and left it off for about 30 mins or so while I fitted an after market radio.
After reconnecting it, I put the keys in the ignition and the car locked and re-opened itself...
Try this website, I have almost the same problem as you except my car didnt come with a radio... so I dont even know where to start looking atm.
https://www.radio-code.co.uk/