1994 BMW 740 Doesn't like the cold

I have a 740iL. All was well until I brought my car to Tonopah, Nv. Now the electric door locks don't work, the windows don't operate, and the engine turns but will not start. It was a Southern California car. These things didn't happen until the car was brought to this cold weather. It seems like an interlock problem, but I don't know how to go about getting it started so I can take it to a BMW repair shop.(The nearest one is 200 mi. Away in Las Vegas) No one in our town of three thousand souls knows anything about these cars. HELP! Thanks, Faver