The one is located behind the glove box and the other on the left side of the glove box about where the trunk locking button is.
Passenger blend door actuator.
When you turn the knob on your dash to the desired temperature the actuator moves the blend door to achieve the proper mix.
The blend door or vent door mixes warm and cool air to be sent to your vents.
An actuator can go bad in of two ways.
It is controlled by a blend door actuator which is a small electric motor.
A blend door actuator is made up of an electric motor that turns a plastic gear set in one direction or another which is connected to an air control door pivot at the final drive of the unit.
First the electric motor can burn out rendering the unit non responsive so nothing changes when the temperature or vent mode controls are moved.
Blend door actuator replaces aa5z 19e616 c yh 1779 604 234 compatible with ford lincoln vehicles explorer 2011 2017 taurus 2008 2017 flex 2011 2016 mks and mkt 2011 2015.
Also check out how to change the passenger heat door actuator here.
2010 ford taurus limited blend doors actuators replacement w dual controls there are two passenger actuators used on this vehicle.