This could be due to multiple things. The first thing that should be checked is your battery. Your battery should last from 4 to 6 years, but if you live in a hot or cold climate then your battery may not last as long. Many times a battery that is getting older will stop working when we have a big swing in temperature - like when we get our first cold snap or our first hot day of the year. We do free battery checks - just give us a call and we will take care of you.