interior lights
 

I went out to put the car cover on and lock the C6 up. I pushed the lock button on the fob and the interior lights came on instead of the running lights flashing and the horn honking. The lights shut off after ten minutes but come back on if I try to lock it again. I tried pushing the brightness button to see if it would make a difference and it didn't. I replaced the fob battery also and no difference. Also made sure the start button was not in accessory mode. Had my C6 for a year and have never seen this happen. Any suggestions? Thanks ahead of time.