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 MANUALSMERCURY2010MARINER HYBRID, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 650 (CLIMATE CONTROL SYSTEM-GENERAL INFORMATION AND DIAGNOSTICS)DESCRIPTION AND OPERATIONCLIMATE CONTROL SYSTEMSYSTEM AIRFLOW DESCRIPTION - DATC/EATCAUTO
2010 Mercury Mariner Hybrid, AWD
System Airflow Description - DATC/EATC: Auto
2010 Mercury Mariner Hybrid, AWDSECTION Auto
WARNING: This page is about a different car, the 2006 Mercury Milan, 2006 Lincoln Zephyr, and 2006 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
When AUTO is selected:
- The temperature control setting is manually set to the desired setting.
- The air inlet door actuator is automatically controlled by the DATC/EATC module, based on the temperature setting.
- The mode door actuators are automatically controlled by the DATC/EATC module based on the temperature setting.
- The A/C compressor is automatically controlled by the DATC/EATC module based on the temperature setting. The A/C compressor will not operate if the outside temperature is below approximately 6°C (43°F).
- The A/C request button or the RECIRC request button, if pressed, will transfer the system to semi-auto operation.
- The blower motor is ON. The blower motor speed is automatically controlled by the DATC/EATC module based on the temperature setting, but can be manually overridden.
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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.