The blend air door is most likely located beneath your dashboard. In some instances, there may be than one blend air door - one on the passenger side and one on the driver's side.
Of course, this is dependent on the model and year. For some designs the blend door is on a vertical axis and horizontal on others...and the actuator motor can be on top, bottom, back or front. Not much of an . If you have a specific automobile that you are concerned with, I can be much more help.
Ford Expedition 1999 Eddie Bauer
They are located in the door latch on the door
4 switches, one on each door, the front door switches are located on the front door pillar and the rear door switches are located on the center pillar, just look for a push in button on the pillars and that's the switch.
the door sensors are part of the door latchinside the door
The door ajar switch is located on the backside of the door latch assembly, and is accessed inside the door by removing the door trim panel.
The door ajar switch on the 2008 Ford Sport is located inside the door that is mounted on the backside.
If it is not visible at the door jamb, it is probably located in the latch mechanism
where is door jam switch on 2004 f150 xlt located
door ajar switches are located in each door they slowly go out one by one if i was you i would replace all four i did
The 2006 Nissan door lock relay switch is located inside of the drivers side door. You will need to remove the door panel in order to access the door lock relay switch.
Inside the door, on the back of the door latch/lock assembly.
Neon door sensor is located in the door latch. The closed door creates a complete circuit through a ground wire. The completed circuit shuts the light off.
There are located inside the door lock. Spray WD-40 on all door jams. This will fix any interior lights from staying on.