I recently began hearing a noise from my car when I change the temperature inside the vehicle. When I adjust my temperature control either direction, hotter or colder, I hear a temporary clicking noise that is pretty loud. It sounds like it is coming from behind the dash. It sounds mechanical and stops after a few seconds. I have a manual temperature dial. This is not a digital display or climate control. This is on a 2005 Jeep Grand Cherokee. Does anyone know what is wrong and how to fix it?
What Tester said, though I would say faulty rather than defective. Defective implies failure during a warranty period. Faulty just means broken.
When you turn your temperature dial your climate control system tells an electric motor to open or close the hot/cold blend door a certain amount. The plastic gears in these motors wear and eventually get noisy. Before too long the motor will stop controlling temperature and you’ll have to get it fixed.
True, but components reach a point in their lives when breaking isn’t unexpected. Any moving part in a car has a finite life span. I define defective as being faulty within the expected life. After 8 years of daily use, I don’t find it unusual for the plastic gear in that actuator to be bad. Just normal wear and tear.