If your vehicle is showing climate control buttons or dials are unresponsive, here are the most likely causes and the parts you'll need to fix each one.
A blown fuse or faulty relay cuts electrical power to the climate control panel, making it completely dead and unresponsive.
If the dashboard or radio was recently worked on, the electrical connector for the climate control unit may have been left unplugged or loosely connected.
The internal circuit board or physical contacts inside the climate control panel can wear out over time, requiring the replacement of the entire module.
The BCM acts as the central computer for interior electronics. A failure or software glitch here can disrupt communication with the climate control panel.