Kesto wrote:I have just realised I may have left the screen demister on , on timer at 7:20 am as I do in winter and was frosting every day. When reached home I reset all the timer and will observe now. A lesson learned about timers
I don't believe this was the problem.
The timer will force to engage the main lithium battery and even recharge the 12v lead acid battery ...this timer would have cost a huge reduction in EV range possibly even fully discharge the main battery (down to 20% SOC) over multiple days of demister (this consume around 4kw per 10min ... so almost 0.7kwh battery .. so a fully charged battery will go flat after 12 days.
I believe the dealer told you the real story: If the car park guy did not properly switch off the car (it could have left the car in the strange state that the traction battery is off, but 12v system in the car is on .. that happen when you switch on the car without pressing the brake pedal) .. the 12v battery will go flat in few hours .. and then the timer will not work anymore
Since your car still did had 22miles of EV range ... it is looking the timer never kick in : the 12V battery was dead already few hours after you left the car in the airport.