If you broke the hazard botton it will need to be replaced. Unfortunately the only way to do it is to get a whole new unit (turn signal, cruise, wiper blade, that whole thing). It is not that bad, 2hrs to replace. I had to replace my becuase my hazard button will not come un-clicked to make them come on (the opposite problem you have). I bought a cheap unit off Ebay and switched out just the hazard buttons since the rest of the "new" unit was basically a piece of junk, but I now have a working hazard lights. The buttons are not that hard to switch out, its just getting the new button thats the problem.