Over time, the car might stop cranking due to a bad RCM. I had a similar problem just a couple weeks ago, car would shut off while idling and would not turn back on after cooling down. Also when trying to restart it, no cranking happened. I went into the RCM and soldered what seemed a burnt contact. Car hasn't had any problems and I feel like it turns on and cranks up better since I bought it 2 years ago. Give it a try and inspect the RCM.