This happened last winter and I replaced the battery. Started again about a month ago. Happens maybe 1-2 times a week. Usually in the morning when it hasn't run yet, but sometimes after I have driven it. All the normal lights and power come on but the key turns and nothing happens. No crank, no clicking. I am suspecting it is something to do with holding the brake down when you start because I always push down hard on the second try just in case and it always works.