My work has secure parking so when it was frosty, 5 minutes before I was leaving, I would get the petrol car running to warm up and clear the windows. As there isn't a pre heat function on the ZS, I wondered if I left the key in the car so I can defrost it, would it then lock me out? I'm sure I can hear the doors lock moments after I start to drive. Only had it a couple of days. Is there a way round it? I know I can unlock the doors from inside with the button on the door but wondered if it would return to lock after a set time?