Why is my car heater blowing cold?

The reason could be the blend door actuator stuck in the cold setting position.

What is an automotive ac door actuator ?

The blend door actuator is a small electric motor. As you adjust the temperature up and down, the signals go through the actuator to complete the request, positioning the air door on the right position.

HOW DO I KNOW IF MY BLEND DOOR ACTUATOR IS BAD?

If an actuator binds inside the Hvac plenum, the control module will attempt to overcome the restriction several times before it shuts down the circuit. You will hear the ticking noise. If the binding clears on the next activation, the control module will perform a calibration and set a history DTC.

WHERE IS THE HEATER BLEND DOOR ACTUATOR LOCATED?

The a/c Blend door  Actuator Motor is located on the Hvac Box underneath the dashboard. The exact location of the Actuator will depend on the Make, Model and Year of the vehicle serviced.

If you need assistance locating or replacing the blend door actuator in your vehicle, Contact us!