headlight/windshield washers
Carefully pull the noozles up from the bumper and take a look at them. If they're cracked they'll need to be replaced as a unit. If it's just crud, you should be able to carefully pop out the little ball nozzles and clean them.
I replaced one of mine a few months ago, hardest part is getting the bumper off and back on again, changing out the nozzles is easy.



