You need to remove the complete bumper if you haven't. If it's an aftermarket one there will be a few screws and plastic clips holding it on. An original vw one I think is just clipped on, not 100% sure of that. But it will be easy to see once you have the bumper off. Two bolts on each side of the front crossmember from below the car and one horizontally in from the side. These are a bit harder to get at from underneath.