How Long Does an AC Control Switch Last?

Every year, vehicles become more and more complex, with computer components replacing mechanical parts. This is very apparent in your car’s air conditioning system, which relies on an AC control module to deliver the ideal heating and air conditioning temperatures to your vehicle. The control module itself is actually a type of computer. However, it will not work properly if the AC control switch fails.

Your AC control module assesses the temperature both inside and outside your vehicle, and adjusts the ambient interior temperature to your preferences. If your AC control switch is not functioning, you will not be able to deliver warm or cool air to the cabin, or adjust the flow from the air vents. The problem could be something as simple as a broken AC switch in your dash, which is not a problem with the AC control module itself. Switches seldom fail, but when they do, your air conditioning system is not going to work.

So, how long should you expect your AC control switch to last? It depends largely on how often you use your temperature control. The life of an electronic switch is measured in cycles, not in years or miles. Most electronic switches are rated for about 50,000 cycles. If you want to translate that number into years, it usually adds up to anywhere between eight and ten. In other words, most of the time, your AC control switch will last the life of your vehicle.

If the AC control switch does go bad, you will likely find that:

  • Your AC will not turn on
  • You will not get enough cool air
  • The air flow from the vents will be compromised

If you suspect a problem with your AC control switch, consult a professional mechanic to get the problem diagnosed, and have the AC control switch replaced if necessary.


The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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