I did something similar last week, I had been cleaning the carpets with vacuum cleaner.
I put the key fob in the centre console.
Reached inside and placed my hand on the drivers seat

to reach across.
Of course, this powered up the car.
Then finished the car and went to grab a hot drink.
A couple of hours later, I get a call from one of my neighbours, asking me did I know I had left my lights on ?.
The high lights are set in the automatic position, so when it went dusk, it turned on all of the lights !.
Before locking it, I just checked the battery voltage in the head unit and it was displaying 14 volts.
I thought form a minute, I was going to be breaking out my 12 volt smart battery charger, but all appeared to be okay.
School boy error on my part

.