Hi neilly,
I have read the same as you, so last night I turned off, jump packs, battery charger ect in my garage, I also moved one of the keys and removed the battery, but still the same, the only other place I could park isn't that far away but might give it ago, there seems to be a certain time frame on this, once I unlock it in the morning it will work all day, but over night something seems to go wrong, I'm gonna go outside in a bit too start her up, so I can see if u can narrow down the time span, and then see what happens in the morning
Thanks Neil