I have a 2005 Cadillac DeVille with air cooled seats and just recently my drivers side air cooled seat stopped working. The fan runs for about 30 seconds and then just stops running. When I turn the car off and then back on it will run for 30 seconds and that’s it. The lights by the button stay illuminated but no fan running. I’m usually good at troubleshooting problems but air cooled seats are just to advanced for me to know where to even begin. Any advice would be much appreciated. Thanks.