1. Locate the blend door. The blend door is usually located behind the dashboard, on the passenger side. It is a small, plastic door that controls the flow of air from the heater and air conditioner into the cabin.
2. Remove the blend door actuator. The blend door actuator is a small, electric motor that controls the movement of the blend door. It is usually located near the blend door. To remove the blend door actuator, disconnect the electrical connector and use a screwdriver to remove the screws that hold the actuator in place.
3. Remove the blend door. Once the blend door actuator is removed, you can remove the blend door. To do this, use a screwdriver to pry the blend door out of its housing.
4. Inspect the blend door and replace it if necessary. If the blend door is broken, you will need to replace it. To do this, purchase a new blend door from a parts store and install it in the reverse order of removal.
5. Reconnect the blend door actuator. Once the blend door is installed, reconnect the blend door actuator. To do this, plug in the electrical connector and replace the screws that hold the actuator in place.
6. Test the blend door. Once the blend door actuator is reconnected, test the blend door by turning on the heater and air conditioner. Make sure that the air is flowing properly into the cabin.
If you are not comfortable performing this repair yourself, you can take your car to a mechanic.
