EASY FIX: Mechanical pencil eraser!!!
Background: I have three 97s, and two of them started having the hazards-on-anytime-they-want issue about the same time. Both of these cars have already had the multifunction switches replaced at least once within the last 2-3 years, and I wasn't in a hurry to buy more of them at $75-$95 each, especially when they didn't seem to have any real electrical issues.
This started happening at the tail end of the summer, and even taping the stupid buttons didn't work more than a day or two; heat would soften the tape (electrical, duct, you name it) just enough to allow the switch to pop up. My kid ended up with a complete Rube Goldberg thing consisting of several layers of duct tape, a case full of CDs, and an actual duct tape roll used as the "jammer" to keep it all in place. Of course you damn near had to use mirrors to read half the gauges and such, but at least the hazard lights stayed off.
Then one day I was driving the other car with the problem, and the button just would not stay down no matter what I did. As I was getting desperate, I looked down and happened to see the eraser end of a mechanical pencil in my pocket. Looked at the opening that the hazard switch sticks through...hmmmm, about right.... pulled the eraser out of the pencil and jammed it in the corner of the hole. Switch has never popped up since!
It does stick up enough that I can pull it out if need be; it apparently works because it's about the right size, is somewhat soft because it's rubber, and creates enough friction between the switch and the opening that the switch just doesn't move. After a fashion (my kid was skeptical at first) I applied the same fix to the kid's car, and he now has a complete view of his dashboard -- and no unwanted hazard lights!
This is just the little white eraser off a cheap mechanical pencil (multi-pack of like 10 pencils for a couple of bucks). Rose Art is my favorite brand; the erasers actually erase pencil marks, whereas a lot of other cheapies just smear. And I can definitely vouch for RA erasers being compatible with the hazard switch button. Plus it's an almost invisible fix, and much more attractive than gobs of tape or other smash-it-down items.