Cold Climate Problems

[FishnMan]

OK, so here it is from the frigid North Pole. It's been about 21 below zero (no wind chill here folks) and my door alarm comes on. The inside cabin light comes on when I apply brakes and stop and my driver side door lock pops back open. Is this thing haunted or what? Oh, it got up to 5 below and it went away (for now). Still have tire pressure light on constantly even after driving a ways. Also, the led message screen flickers and looks sickly lol when I start in the "cold" mornings. Anyone else in cold climates having similar or other problems? I did notice that leaving sun roof "slider" closed helps keep the cabin heat in.

Thanks all