Hi I have 2013 p85 great car for just over a year range is only 127 miles hv battery obviously has some issues I live on a small island range has not been much of a problem I recharge with 220 volt home charger last Tesla update August put a lot more items on the service page the car was running perfect I parked up and plugged in next day tried to start car started then died then started again but would not drive ,I checked 12volt battery 12.7v so I charged up with 110 volt battery charger car then proceeded to give me faults it will start up but I cannot select drive ac doesn’t work screen seems slow any thoughts thank you for any help