Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Fresh/Recirculated Air Button
This button controls the source of air entering the heater system. When Light Emitting Diode (LED) in this button is off, fresh air is brought in from outside vehicle. When LED is lit, interior air is being recirculated. Push button to change between fresh air and recirculated air modes.
When fresh/recirculated air button is pressed, a ground signal is sent from the heater control panel to the recirculation control motor. The motor then runs until the recirculation door reaches the opposite position. When recirculated air mode is selected, voltage is applied through dimming control circuit to the indicator, which comes on.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.