First time I have experienced this, having previously owned a Gen2 and Gen3. This current Gen4 had a full service and its first MOT 2 months ago. I went on a 21 day holiday and left the car parked and locked in a garage. I have been away for up to 25 days before but usually leave the car unlocked. This time, the car display came up with a 12V battery warning and wouldn't start. It was a chilly morning (about 5C). I tried again and the car started wildly flashing its headlights (any of you e