with a small screw driver pry on the metal tension and remove
I've noticed different mirrors have different tricks. On an '02 Nissan Xterra you can slide a hack saw blade between the mirror tab or "button" and a small spring tab you can see from the bottom notch. Slide it in around .75" until you bump up against another spring tab. Push further and at the same time pull the mirror up off the button
Go to your tool box, and remove the largest sledgehammer you have. If none available, the back of an axe or other heavy blunt object will do. Approach vehicle from the front, vectoring your swing with the line of the mirror. SWING HARD. Wash, rince, repeat. If you look up from the bottom of the mirror there is a star head screw . Remove the screw and gently pull the mirror assembly away from the van, lifting up on the mirror slightly. Pull it gently until you see the wiring harness . Then take a small blade screw driver and pry on the tab at the bottom of the red connection tab to release the mirror's wiring harness from the van. Pull on the mirror wiring portion of the plug to separate it from the van. To reinstall mirror: Reinsert wiring harness; making sure the tab clicks into it's socket firmly. Then make sure the mirror slides back into the track. Press down gently but firmly on the mirror; reinstall the star head screw and you shoold be done. Happy Trails!
On the 1997 Ford Expedition, drive carefully with small hammer, I laid a piece of heavy paper on windshield, then tap lightly up off the glue mounted wedge on windshield, there are no tab's or buttons to push.
I recently had to repair the rearview mirror on an '02 Nissan Xterra. It may be different, but perhaps it used the same technique. The mirror is connected to a metal "button" which is glued onto the windshield. In my case the glue had come undone and I had to remove the button from the mirror in order to re-affix it to the window. You can probably get the rearview off the button while still on the windshield in the same way. From the bottom of the housing there's a small notch where you can see the button and a small tab of spring steel. Use a hack saw blade or something else flat and long and slide it in between the tab and the button. Push it in around .75" until you bump up against another spring tab. Continue to push against it and it will release the lock. While pushing on it pull the mirror upwards off the button.
Look for a set screw or Allen screw to loosen ANS 2 -In this type you may need a very thin small screwdriver to start poking the metal tab out, then pull it with pliers.
Adjust the mirror so it is centered [left to right] but pointing upwards a bit to increase the space between the bottom of the mirror and the mirrow housing. Place fingers in space at bottom of mirror and pull towards back of car. There are a couple of snap-on fasteners that hold the bottom of the mirror in place. Pulling carefully on the bottom of the mirro will eventually separate these fastners. The top of the mirror is held in place by a small tab that sits in a groove with a piece of wire that runs across the tab. Bias the mirrow downwards to remove the tab from its grove. Replace by first positioning the mirror's fasting base [attached to back of mirror] so that the tab is located in its groove behind the wire that hold it there. Then push on the base of the mirror to "snap" its fastners into place. You will have to "wiggle" the mirror a bit so that it is positioned perfectly such that the fastners will work properly. Test that the mirror is positively fastned to the housing by moving it into various positions and lightly pulling on the mirror. NOTE: It is not necessary to remove the mirrow housing from the car to replace the mirror. This procedure works on the passenger side mirrow as well.
Remove the covers to the steering column, then use a small screw driver and push in tab on bottom of cylinder with key in run position and pull out.
Remove the cover on the steering column. Then remove the screw holding the plastic cover around the switch. Then turn the key while pushing in on the tab below the switch, it will click and then you can pull it out.
Side MirrorsElectric, cable operated, or manual? In any case remove the driver side door panel, on the inside of the car in the fender side corner where the mirror mounts, you will either have a small Phillips screw holding the mirror backin on, or it may have plastic tabs, and can be gently popped off using a flat blade screwdriver. Once the door panel, and inside mirror mount cover are removed, you should see three 10mm nuts, arranged in a triangular pattern behind the inside mirror cover. If the mirror is electric, after removing the three 10mm nuts and slowing pulling the mirror off on the outside, you will see the wiring connector for the mirror, unsnap the tab and remove the mirror. On a note occasionally it may be easier to undo the mirror if the window glass is all the way down. If the mirror is manual, just remove the three 10mm nuts and remove the mirror. If it is a cable operated mirror, with the "joystick" to adjust it on the inside, once the three 10mm nuts are removed, on the inside portion of the inside back of the mirror, the "joystick" is held to the back cover by a small metric Allen screw, with the right sized Allen loosen this screw, but not all the way out. After it's loosened sufficiently the "joystick" assembly should slide right out of the cavity it's in. Be careful when removing mirrors, often times there is a rubber grommet that any wiring or "joystick" slips through.
Remove the spare key inside and there's a tab that you can pop up with a small screw driver to access the battery.
An electrochromic rearview mirror is installed on higher end vehicles. It consists of two lenses that sandwich an electrochromic (electronic color changing) gel. This gel, when charged with electricity, darkens. The mirror uses a forward sensor which measures the outside ambient light, and a rearward sensor to look for glare. When dark enough, it sends current to the electrostatic gel, darkening it a rate which is related to the level of ambient darkness and rearward glare. When the outside ambient light increases, the current decreases, until the gel is clear again at daylight light levels. The inside sides of the lenses are coated with a transparent, conductive layer, and the deepest lens has a reflective (mirror) coating. There is no tab to pivot the mirror. For more info, see: www.gentex.com/auto_how_nvs_work.html.
Remove it by depressing the retainer tab then sliding the knob out of its latch case. Alternatively, you can use a flat screw driver to insert it behind the knob to force it out.
It's probably the driver's side door switch. Remove it by lifting the tab on the rubber boot and then loosening the screw under the tab. Remove the switch and look to see what's wrong. (It may be repairable) If not, remove the wire and get a replacement from the dealer. re-install and you should be good to go. Good Luck!