Tag Heuer 2000 - Recent Questions, Troubleshooting & Support - Page 4

Make sure the voltage on the new battery is correct. Just because a battery is new does not mean it is good. That is likely the problem.

Has it broken, or just been bent out of shape??? If it is just bent you could possibly take it to a TAG repairer or a watch maker to get it adjusted

sounds like the crown stem may have snapped. Same happened to me and it had to be replaced at a cost of NZD$300. Have you bumped the watch or maybe tighted the stem too tight?

does it have screw down crown if so you need to unscrew it anti clockwise once you do this you can set time etc if it does have screw down crown remember to scew it back its spring loaded so you need a little pressure if you dont it wont be water resistant..

You need sharp nose pliers to unscrew the back and small screw driver to pry out the battery for direct replacement.Maybe 325 but you have to buy fresh ones from Radio Shack not drug stores.