Select Your Vehicle

Select by Brand

Get Email Exclusives

Sign up for email updates on the latest exclusive offers

A/C & Heater Control

 Shop 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:

  • Locate the control panel.The exact location of the module will depend on your car make and model. However, most cars have this unit installed as part of the dashboard.
  • Pry off the unit.Depending on how the module is installed, you might need to unscrew screws and use a prying tool to carefully remove this part. In some models, you might need to loosen or pry off tabs to completely remove the module.
  • Disconnect the wires.Before you disconnect the cables that connect the module to the car's electrical system, identify and tag the wires so you'll know which wires connect to which port later on. Once you've properly labeled the wires, you can now disconnect them with the use of pliers or by simply pulling out the electrical connectors.
  • Attach the new AC and heater control unit.Connect the new wires into the system, making sure that each cable is linked to the right connector or port. Then attach the panel and secure it in place by screwing it or flapping the tabs back. Once the unit is securely installed, don't forget to test the switches, knobs, and buttons.
  • Maintenance tips

    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.