How can I tighten my loose inside rear view mirror?

i would think it needs renewing as sounds as though the mirror and the anti glare coating have seperated

If you are referring to the mirror mount on tne windshield..there is a small hex screw on tne underside of tne mount that tightens the mirror to tne mount..just find the size very small and tighten it..ask at any of the auto parts stores..the screws are pretty much the same..Good luck...

nope....the mirror mounts on the arm like a ball and socket for movement. one of them is worn out...

If this is the buton you are talking about (see picture below) it is for auto anti-glare. Hope this is what you're talking about and hope this helps...

The mirror adjusts itself at night to get rid of glare like your rear view does, this is done by a liquid in the glass when it goes "bad" you will get the problem you have. The solution is have a dealer replace the mirror or an auto glass store can glue a replace mirror over the existing but you will lose the self adjusting at night.

look under the covers and their is either a screw or a bolt that will tighten the spring loaded cups

No, the mirror is just a friction fit. You will need a new mirror.

Well, the car should still be under warranty if you have'nt gone over the mileage, why not take it to the dealer? This is just a suggestion so you don't have to spend any money.

My 1998 corolla rear view mirror is loose. How can I tighten it?

Problem experienced w/2001 OB Wagon. The 'mirror' w/auto adjusting for anti-glare is actually an LCD. When they go 'murky' it is the LCD layers delaminating. Not repairable -- remove and replace.

Bob