Had my Volt for about a week. Drove to store while in ECO mode. When I started it up and drove home, the climate control was unresponsive. None of the selections worked, couldn't turn anything on. No fan, no a/c, no air flow at all. After I pulled into the garage, I turned the car off and got a momentary message that said Climate Control not available or something like that. I turned the car back on and the climate control worked fine. I'm I missing something or do I have a problem?