How do you install the rear view mirror? Nothing looks broken just popped right off.

It means that the connector from the vehicle's computer system has come unplugged or is not making good connection. Check the connection at the back of the mirror.

Mine does that occasionally intermittently but if you look around in the back of the mirror you'll see some wires, those are most likely broken.
I had the mirror completely fall off the windshield and had a windshield installation company reattach it because I knew it took a specialty glass glue, well they broke one of the wires but not completely so it shorts out but a wiggle makes the lights come back on and I'm just to busy to take the mirror off the mount and fix it right. You can remove the mirror from the piece that attaches it to the windshield.
Check those wires, good luck

Did it come that way from the factory? If so, you have a brokem wire in between the door and the body where the door attaches to the body. Comes from use. Nothing new. Otherwise mirror is defective. Check for broken wires first. This also causes windows and seats/doorlocks not to work. You'd be surprised how many wires you find broken or shortd out completely. Can be stripped and connected with red wire connectors from auto parts store.

NO JUST POP IN BACK IN. IF THE GLASS WAS LOOSE FROM THE FRAME YOU MAY NEED TO RE GLUE IT BACK ON.

here's 1996, all I have. Please rate.

Mirror, Power — Outside Rear View NOTE: This procedure applies to both RH and LH power outside rear view mirrors.

Removal

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

1. Remove the two outside rear view mirror inside mounting hole cover screws and the outside rear view mirror mounting hole cover (17K709) from the front door (20124).
   
   
   
   
   

1. Remove the wire clip.
   

1. Disconnect the power outside rear view mirror electrical connector.
   
   
   
   
   

1. Remove the three power outside rear view mirror bolts and the power outside rear view mirror.
   
   
   
   
   

Installation
To install, reverse the removal procedure. Tighten the three power outside rear view mirror bolts to 3-4 Nm (27-35 lb-in). Glass, Outside Mirror
Removal and Installation
Refer to the glass replacement procedures in Manual Mirror for power outside rear view mirror glass (17K707) Trim Cover
Removal

1. Remove the front door trim panel. Refer to Section 01-05 for the removal procedure.
   

1. Remove the two outside rear view mirror inside mounting hole cover screws.
   
   
   Remove the outside rear view mirror mounting hole cover.

Installation
To install, reverse the removal procedure. Mirror Control
Removal

1. Use a small flat-blade screwdriver to pry the power outside rear view mirror control switch from the instrument panel (04320).
   
   
   

is it just the glass that broke?

Exterior Mirror Glass Removal

1. Position the inner edge or the exterior rear view mirror glass to its maximum travel.

1. WARNING: Place a shop towel between the exterior rear view mirror glass and the hand to avoid personal injury in the instance of glass breakage.
   Grasp the outboard edge of the exterior rear view mirror glass and pull outward.

1. Remove the exterior rear view mirror glass.
   • If equipped, disconnect the heated rear view mirror glass electrical connectors.

Installation

1. If equipped, connect the heated rear view mirror glass electrical connectors.

1. NOTE: An audible click will be heard during installation.
   Press firmly in the center of the exterior rear view mirror glass until it snaps onto the exterior rear view mirror motor.

the mirror should simply slide over the metal mount (button) that is glued to the window.

loosen the set screw on the mirror mount...

hold the rear view mirror mount on the glass just above the metal mount (wide end of plastic opening facing down)

slide it into place...
secure it by tightening down set screw you loosened earlier.

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You have to CAREFULLY ( probably wise to wear safety goggles ) and with a flat blade screwdriver, pry out ALL the broken mirror glass wearing gloves. Now with the 2 adhesive strips, align mirror glass and adhere to base. Hope this helps

There are two tiny motors in each mirror. one for up/down. One for side to side. They have jack screws (plastic) that fit into the motors.

You can manually put your hands on either side of the mirror and force adjust it. If you hear a ratcheting sound, the jack screws are OK. Then repeat with hands on top and bottom.

If you hear ratcheting and mirror stays where you stop it, that means one of the motors is bad. The motor assembly is available as a separate part.

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Mirror Motor—Crown Victoria, Grand Marquis
Removal and Installation

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

1. Remove outside Rear View Mirror Glass as outlined.
   

1. Remove Outside Rear View Mirror as outlined.
   

1. Remove two screws from outside rear view mirror motor.
   

1. Remove outside rear view mirror housing from outside rear view mirror base.
   

1. Disconnect connector and remove outside rear view mirror motor from mirror housing.
   

1. To install, reverse Removal procedure.
   

Might be cheaper to buy used irror at car-part.com. Look for * to find page with cheapest part. Or, EBay. Good luck