If anyone is remotely interested, this is the panel in Techstream that caused the issue above:-
If you change 'Auto Entry Cancel SW', it seems to turn off the keyless door opening. ***But***, also the keyless ignition function.
This display above is how it should be set for the car to operate normally, if you set it to 'ON', then the car doesn't recognise the wireless key.
If you are not expecting this to happen, it is more than annoying.