The hazard lights aren't working when I press the hazard button. Left and right flashers work fine. I checked the 10A fuse labeled "hazard" underneath the hood and it's ok. Any idea(s) how to fix this problem?

 

Sounds like your switch is failing either by way of the switch being grounded or it just isn't a functional switch. Obviously the lights are good & grounded. I would start with the switch. I had a similar problem w/my sunroof switch. It would open but not close. Replaced the switch and it has worked fine since.

 

How do I get to the switch? Do I have to remove the hazard plastic button? If so, how do I do that?

 

1 of two ways I believe. The button may come off if you pull on it and expose screws or you may have to remove the center console and get behind it. My sunroof switch popped out. But I've seen how Hondas/Acura does shit and these seems like a way to try. Good luck.

 

Isn't the hazard switch also a relay? You can check the resistances of that, but I have no idea how to...