Left my lights on my '05 Element today and when I got out of work, of
course, the battery was dead. The lights were not on that long. I was
surprised the battery died that quickly. This happened one time
before. We were tailgating for a couple of hours with the radio on and
the back hatch open. Dead battery that time too. Today the battery
died to the extent that I got the enter code alert on the radio after
jump starting the car. I entered the code easily enough but now I get
no sound. The radio display indicates that the radio is operating: I
can switch from AM to FM to XM, etc. Turning the volume knob gives me
the usual display indication that the volume is increasing but I get no
sound at all. Does anyone know what the problem is and how I would fix
it?

Thanks.