How to Troubleshoot a Jeep Heater Switch

Jeep vehicles can include dual-zone heating and air-conditioning, wherein the driver and front passenger can adjust the temperature settings individually. The system can be automatic or manual. Additional heater controls enable defogging or defrost. To function properly, the heater switches depend on other elements of the heating system. You can investigate, identify and correct potential Jeep heater switch problems by following some specific steps.

  • Check to ensure the airflow vents are clear if the heater switches don't appear to warm the vehicle. Jeeps depend upon a throughput of air to heat the passenger compartment. The heater switches will not work properly if the vents are blocked. Snow and leaves can cause blockages; keep the vents at the base of the windshield, along with the air condenser in front of the radiator, free of debris.

  • Rotate the temperature controls if the heater switches don't appear to work. Often, the driver and passenger will have separate controls. Rotating the dials to the right, into the red gradation, will increase heat.

  • Rotate the blower control to the right from the "0" position if the Jeep heater switches continue not to work. This action will force heated air through the passenger compartment.

  • Adjust the mode control if the heater switches still won't work. The mode selector adjusts air direction. Push the buttons to choose from several patterns of air distribution. Use the descriptive icons to guide you. For example, choose the icon with the arrow pointing at the figure's head for air to travel through the outlets in the dash.