External Temperature Display
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 the ignition is first turned ON, the external temperature displayed will be the last temperature read before the ignition was turned OFF. If the last temperature read is below 6°C (43°F), the DATC/EATC module will prevent A/C operation.
The external temperature display will update when the vehicle has been driven above 40 kph (25 mph) for greater than 30 seconds. Once the DATC/EATC module updates the external temperature, the DATC/EATC module will allow normal A/C operation.