Remove the electric mirror switch

This mirror control switch will pop right out with just a thin blade type screw driver. Slide the blade of the screw driver under the edge of the switch carefully and twist slowly until you can see the switch coming up. You may need to re position the switch as there is a bit of play in the hole the switch fits into to. Once you have the switch up and out of the panel, carefully release the wires it is clipped to and replace it with one that is good. It is a typical sign these witches have gone bad if your mirror only moves in 2 directions or both mirrors are moving at the same time. I hope I have helped you with your problem.

1. 1 Open the hood. Disconnect the cable from the negative battery terminal. Peel back the insulator if equipped, and use the wrench to loosen the clamp nut on the negative cable.
   
2. 2 Remove the covers on the steering column. Use the screwdriver to pull out the screws, and detach the knee bolster below the steering column. Pull out the screws and detach the lower cover to find the screw for the upper cover; then remove the upper cover in the same manner.
   
3. 3 Remove the multifunction switch by pulling out its retaining screw and pushing on the release lever to detach the switch from the column.
   
4. 4 Disconnect the ignition switch's electrical connector. Then detach the switch from the steering column by pressing on its clips to release the tabs.
   
5. 5 Install the new ignition switch in the old one's place, making sure the locking tabs activate and the spring under the switch is in position on the column's locking rod. Connect the electrical connector.
   
6. 6 Reconnect all other parts on the steering column in reverse order of removal. Replace the negative battery cable.
   
7. 7 Insert your ignition key to test for proper operation in all three positions: "Lock," "Accessory" and "Start."
   

if there is a plastic cover directly behind the mirror on the inside of the car it should come off by gently prying it with a flat blade or screwdriver around the edge of it as most are held on by plastic clips.
Once it is removed it will expose the nuts or bolts that hold the mirror to the door but dont forget to remove the electric wire plug that leads to the mirror

SECTION 501-09: Rear View Mirrors 2002 Explorer/Mountaineer Workshop Manual REMOVAL AND INSTALLATION Exterior Mirror Glass Removal
NOTE: Exterior mirror glass is serviceable only on vehicles built after July of 2001.

NOTE: Passenger side exterior mirror shown, driver side exterior mirror similar.
All mirrors

1. Position the glass in the full up position.

1. Locate the notch at the bottom of the exterior mirror glass.

1. Release the exterior mirror glass.
   1. Insert a long flat-bladed screwdriver in the notch.
   1. Push the screwdriver into the notch until the glass is released.

Heated mirrors

1. Position aside the exterior mirror glass.

1. Disconnect the electrical connectors.

All mirrors

1. Remove the exterior mirror glass (17K707) passenger side or (17T675) driver side.

Installation
Heated mirrors

1. Connect the electrical connectors.

All mirrors

1. Position the exterior mirror glass on the exterior mirror motor.

1. Place a hand against the back of the exterior mirror housing and a hand flat against the exterior mirror glass. Press the glass in place until fully seated.

You will need a large bearing retaining nut socket (1-in drive) about 2 7/16th in or 61/62mm (I got mine at NAPA with a 1/2 in to 1-in drive converter) BUT BEFORE loosening the nut there is a small keeper under the bottom edge the nut at the top (12-oclock) position of the nut. Use a magnet to retrac this and then loosen the large bearing nut. You sometimes have to slightly move the nut "a hair" left or right to remove this bearing keeper. Once the keeper is out the nut will easily come off. The rest is easy. Good Luck!

remove trim panel, remove mirror fasteners.

Glass, Outside Mirror—Town Car

Removal and Installation

1. Push upper edge of outside rear view mirror glass (17K707) into the outside rear view mirror to expose latch release.
   

1. Using a small flat-bladed screw driver or equivalent, move latch release to released position.
   

1. Remove outside rear view mirror glass mounting back and outside rear view mirror glass from outside rear view mirror.
   

1. Disconnect heater wire connectors and auto dimmer connector, if equipped.
   

1. To install reverse Removal procedure.
   

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Mirror, Power—Outside Rear View
Town Car

Removal and Installation

1. Disconnect battery ground cable (14301). Refer to Section 14-01 .
   

1. Remove front door trim panel (23942). Refer to Section 01-05 .
   

Trim Panels, Door Front—Town Car
Removal

1. Snap out two door pull strap retaining screw covers. Remove screws.
   

1. Remove three screws on front and rear side and center of front door trim panel (23942).
   

1. NOTE: The following procedure must be used during removal and installation of the door armrest and trim panel. Refer to the appropriate illustrations for component and vehicle model identification.
   
   Using the Trim Pad Removing Tool from Rotunda Windshield and Moulding/Trim Removal Kit 107-R0401 or equivalent, pry the trim panel retaining clips from the door inner panel.
   

1. NOTE: Do not use front door trim panel to remove trim clips from door inner panel. Replace any bent, damaged or missing push pins.
   
   Remove window regulator control switch housing from front door trim panel. Lift up housing in front and disconnect all connectors.
   

1. Disconnect wiring harness and heated seat switch electrical connectors if equipped.
   

1. Remove the door trim panel.
   

1. Disconnect two electrical connectors.
   

1. Remove nut from outside rear view mirror mounting base.
   

1. Swing outside rear view mirror (17682) toward driver door window glass to expose screw in mount base.
   

1. Remove screw from outside rear view mirror base.
   

1. Remove outside rear view mirror from front door (20124). Guide wiring and connectors through hole in front door.
   

1. To install, reverse Removal procedure. Tighten nuts to 8-10 Nm (71-88 lb-
   

1. on the inside, remove the plastic trim that is directly inside of the left side rear view mirror.. should just snap off.
2. remove the lens from the reflector/courtesy lamp on the door.
3. pop the plastic trim holding the window switches ...pull up on the front edge (closet to hood) and tip it up until you can release the back edge of the switch plate.
4. unhook the wire connections from the switches... look for the lock tab release lever...they're color coded and only fit in one location so don' worry about where they go..
5. There are two small screws to remove...one below where the switches were, and the other behind the lens of the reflector on the door.
Once you get these out, lift straight up on the panel and it will unhook from the slots in the door.
6. unplug the courtesy light from it's spot in the door panel by twisting.
that should get you there!

i don't have aviator. here's explorer, should be the same.

You will see a small rectangle where the screwdriver goes in. You are pryingtowards glass. The retention is about a 3 inch rectangle that has a lip around it that snaps onto a rectangle on the mirror body.

SECTION 501-09: Rear View Mirrors 2002 Explorer/Mountaineer Workshop Manual
REMOVAL AND INSTALLATION Exterior Mirror Glass Removal
NOTE: Exterior mirror glass is serviceable only on vehicles built after July of 2001.
NOTE: Passenger side exterior mirror shown, driver side exterior mirror similar.
All mirrors

1. Position the glass in the full up position.

1. Locate the notch at the bottom of the exterior mirror glass.

1. Release the exterior mirror glass.
   1. Insert a long flat-bladed screwdriver in the notch.
   1. Push the screwdriver into the notch until the glass is released. (and pull screwdriver towards glass)

Heated mirrors

1. Position aside the exterior mirror glass.

1. Disconnect the electrical connectors.

All mirrors

1. Remove the exterior mirror glass (17K707) passenger side or (17T675) driver side.

Installation
Heated mirrors

1. Connect the electrical connectors.

All mirrors

1. Position the exterior mirror glass on the exterior mirror motor.

1. Place a hand against the back of the exterior mirror housing and a hand flat against the exterior mirror glass. Press the glass in place until fully seated.

are you trting to tighten the mirror glass or the mirror where it attaches to the body? I don't think glass is removable in 99. Only can try to press on glass to seat if unseated. not too hard.

1. Remove the front door trim panel; refer to Section 501-05 .
2. go to car-part.com for a used mirror. Page with * is cheapest seller.

1. Remove the speaker.
   1. Remove the screws.
   1. Disconnect the electrical connector.
   1. Remove the speaker.

1. Remove the outside rear view mirror (17682).
   1. Disconnect the power mirror wiring clips.
   1. Remove the outside rear view mirror nuts.
   1. Remove the outside rear view mirror.
      • Feed the power mirror wiring through the opening in the front door (20124).

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SECTION 501-09: Rear View Mirrors 2001 Explorer/Mountaineer Workshop Manual
REMOVAL AND INSTALLATION Exterior Mirror Glass, 2001 model Removal
NOTE: Exterior mirror glass is serviceable only on vehicles built after July of 2001.
NOTE: Passenger side exterior mirror shown, driver side exterior mirror similar.
All mirrors

1. Position the glass in the full up position.

1. Locate the notch at the bottom of the exterior mirror glass.

1. Release the exterior mirror glass.
   1. Insert a long flat-bladed screwdriver in the notch.
   1. Push the screwdriver into the notch until the glass is released.

Heated mirrors

1. Position aside the exterior mirror glass.

1. Disconnect the electrical connectors.

All mirrors

1. Remove the exterior mirror glass (17K707) passenger side or (17T675) driver side.

Installation
Heated mirrors

1. Connect the electrical connectors.

All mirrors

1. Position the exterior mirror glass on the exterior mirror motor.

1. Place a hand against the back of the exterior mirror housing and a hand flat against the exterior mirror glass. Press the glass in place until fully seated.

Remove the door panel and the armrest. Then you will need to slip a thin flat blade screwdriver under the panel and gently pry up to release the plastic keepers that attach the door panel. Then you can remove the panel and gain access to the window regulator and track. Be gentle prying out the plastic keepers so you don't damage the panel. Some of the keepers may break, but you can get more from Ford or your local parts house. These are a very common piece. Good luck.