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.
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HOMESERVICE MANUALSFORD2021EDGE SE, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 704 (CLIMATE CONTROL SYSTEM - GENERAL INFORMATION (SPECIFICATIONS - DESCRIPTION & OPERATION))DESCRIPTION AND OPERATIONCLIMATE CONTROL SYSTEM - VEHICLES WITH: DUAL AUTOMATIC TEMPERATURE CONTROL (DATC) - SYSTEM OPERATION AND COMPONENT DESCRIPTIONAUTO
2021 Ford Edge SE, 4WD
Climate Control System - Vehicles With: Dual Automatic Temperature Control (DATC) - System Operation and Component Description: Auto
2021 Ford Edge SE, 4WDSECTION Auto
WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
When AUTO is selected:
- the HVAC system operates to achieve and maintain the temperature requested by the operator.
- the driver and passenger side temperature doors are automatically controlled by the HVAC control module based on the temperature setting.
- the A/C compressor is automatically controlled by the PCM based on temperature information sent by the HVAC control module. The A/C compressor does not operate if the outside temperature is below approximately 0 deg.C (32.0 deg.F).
- the blower motor speed is automatically controlled through the blower motor speed control when it receives a PWM signal from the HVAC control module based on the temperature setting, but can be manually adjusted if desired.
- the HVAC control module controls the air inlet door to recirculate, partially recirculate or open to the fresh air position depending on the in-car temperature and humidity sensor inputs.
- the dual zone auto can be turned off by holding button for two seconds.
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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.