I am in Madison, WI, and it has been around zero a few times in the past week. My car has made a few funny noises during start up, and one time it said "Increased Battery Drain". But nothing really came of it or any other noises.
However, my Weisslicht LED turn signals frequently throw an error on both sides, but when I bump the signal, it'll blink really fast 4-5 times and then go to the regular cadence and reset the error. Oh well.
My wife's 328 ('07 E90 65k miles, spent all of it's life in Texas until Nov 2012) has some squeaking while turning the steering wheel and similar groans during start up.
2010 e92 335i xDrive | AW on Coral | ZPP | ZMP | ZCW | Nav | Logic7
KW V1 | Cobb | BMW Performance Exhaust | Alpina Tranny Flash | Lux V3 and Weisslicht