The Mégane II Owners' Club

Found some this morning.... how do you fix this or do I just have to buy a new unit?

If you take the bumper of then the fog ligh unit unscrews and you can blow a hairdryer in to clear it, then put some silica gel in it'll reduce the chance of it happening again, also add some vasoline on the seal round the bulb that'll help reduce water ingerss