A/C & Heater Control
You're in your car and it's the middle of summer. To make the trip more comfortable, you switch on the AC since the temperature outside is scorching hot. Unfortunately, you notice that the AC & heater control switch won't budge. You try to jiggle it, but nothing seems to happen. You don't have any choice now but to roll down the windows to let some air in. Because the switch won't budge, you highly suspect that there's something wrong with the heater control. Fortunately, diagnosing a faulty AC and heater control module is easy.
Signs of a faulty AC & heater control unit
The most obvious signs include knobs, switches, or buttons that won't work or are missing, as well as scratches, cracks, and dents on the panel surface. An unresponsive AC unit may also indicate a faulty control panel, but it's also an indication of other possible AC system problems. If this is the case, it's best to troubleshoot and eliminate other possible causes. Once you've figured out that a damaged or worn-out panel is the culprit, it's time to replace this component.
Replacing a faulty AC & heater control unit
Fortunately, replacing this component is an easy task. You just need to get your hands on a direct-fit replacement. Once you've got the right part, here's a list of what you need to do:
To make sure your newly installed control unit lasts a long time, regularly wipe it clean with a damp cloth to prevent dust and grime buildup. These contaminants can accumulate on the surface and prevent switches and buttons from working properly. When cleaning the panel, double check if the cleaner you're applying is safe to use on the surface of the panel. Since most control units are made of plastic, avoid cleaners with harsh ingredients that can cause the plastic surface to crack, peel, or fade. Also, avoid pushing or twisting the AC & heater control buttons too hard since this could easily damage the parts.