Reattaching inside mirror on Sienna 2002. I pulled a plastic film off the button that the mirror slides onto.

yes they snap onto the backing plate

On the inside trim, you can remove screws that are by the door handle, arm rest, under door and side of door and then gently pull back on the panel as there will also be retaining clips attached and you don't want to break them. You'll need to lift the door panel upwards in order to get it off the window ledge. Then you'll need to manipulate the panel and disconnect the door handle linkage from the door handle and disconnect the wiring for your controls. Then you can access the bolts that secure the mirror onto the door

another way it might attach is with a small metal or plastic wedge and glue maybe fashion the wedge from milk jug cap and a dab of 5 min epoxy firmly hold the mirror in place until it stays

remove, little plate with correct size allen wrench. Next, buy rear view mirror glue kit, at any automotive store, and follow directions. re-attach mirror to plate, once dried on windshield, and re-tighten allen screw.

Hi, First remove the door panel. (The connector for the mirror is behind the panel just to the left of the door handle.) The arm rest cover pops off by gently prying upward at the corners near the door panel and along the outer edge of the arm rest. Then remove the 2 screws. Remove the screw that holds the door handle bezel on. Remove the little plastic plug to the left of the door handle as well. This reveals yet another screw to remove. Now you can gently pull the door panel away from the door. The little plastic clips will pop out of the door. If they come away from the door panel they easily fit back in place in the metal retainers built into the door panel. You can now disconnect the connector and remove the 3 10mm mirror bolts.
With respect to the door handle bezel on the inside of the door, to remove it you must pull/slide the bezel away from the door hinge. It should move an 1/8 to 1/4 inch. There is a little tab that hooks inside the door handle mechanism and two small holes, top and bottom, that slip over little pegs on the mechanism. I broke this tab while removing the bezel on my car. This was the most difficult part, on my car, to remove.
Take care

there is a rod that goes from latch to the handle possible disconnected and was never reattached the rod is held in place with a plastic clip -any auto store carry them -other is handle broke and will need to replace whole handle assembly -salvage yard,online or dealer for part use a mirror to look in the door behind lock it u cant access the lock will have to pull door panel of to repair and or replace parts

Just replaced the mirror glass myself. Don't have all the answers but can tell you this much.

The passenger side mirror on my 2004 Odyssey was hit by a projectile which caromed off the upper door frame. Left standing was a functional mirror base (motor driven part which has four, short, horizontally mounted rods) still attached to the mirror shroud and a separate assembly of the mirror glass and plastic mount.

I purchased the mirror glass alone online from a Honda dealer, removed the old mirror glass from the mount, and mounted the new mirror to the mount. To do this, look at the tabs which hold the mirror to the mount, and slide the mirror across the mount in the obvious direction. It will take some force. I had the benefit of having the mount/mirror glass blown out of the mirror shroud so it wasn't too difficult. If the broken mirror is still mounted to the mount and inside the shroud, push the bottom of the mirror inward so the top edge of the mirror can clear the top of the shroud. Then pull up on the mirror glass to slide it off the mount. This will take some force but fortunately, the mirror glass is already broken so you don't have to be gentle. Wear gloves or protect you hands while doing this.

Reverse the process for install the new mirror glass.

Now for my key tip. I had to remount the plastic mount/mirror glass assembly onto the motorized mirror base. I could see that it snapped in, with proper alignment, by pushing straight in. I applied quite a bit of force and simply could not get it to snap in place. My solution, was to put the assembly in a 200F oven for 15 minutes to heat the plastic to make it more flexible. Using paper towels to handle to avoid burns, I aligned the closures with the four, small, horizontally mounted rods, and with a moderate amount of force, the assembly snapped into place.

Hope this makes sense. I believe most people will only have broken mirror glass and not have the plastic mount with mirror glass come off the motorized base as I did.

Pop the plastic cover off on the door....unscrew it and disconnect the harness and pull the mirror out. Reinstall in reverse.

You'll need to remove screws that are by the door handle, arm rest, under door and side of door and then gently pull back on the panel as there will also be retaining clips attached and you don't want to break them. Then you can access the mirror assembly.. it's a huge pain to change such a small part

On the inside trim, you can remove screws that are by the door handle, arm rest, under door and side of door and then gently pull back on the panel as there will also be retaining clips attached and you don't want to break them. You'll need to lift the door panel upwards in order to get it off the window ledge. Then you'll need to manipulate the panel and disconnect the door handle linkage from the door handle and disconnect the wiring for your controls. Then you can access the bolts that secure the mirror onto the door