As the topic of this message, my cruise control works sometime. Last week, I was on the freeway and wanted to use my CC set my speed to 70 mph and no response from the CC. I went to use my cruise control 2 days ago and it worked. What can cause my CC to work sometimes? Everything is working fine with my car and I've kept up with the maintenance of my G, rigorously.Vehicle has 152240 miles.