The car has no immobiliser...
I think the next step is to charge the battery and turn off the "master switch", all Aero 4s have this on the front of the electronics box.
If the battery still discharges it is the battery and yes, I'll go back to Halfords. But if it stays charged then it is a "car issue".....
It is booked into Williams next month for Service, MOT, etc, so they can see what they can find...
Joy.
