The line that is affixed to the front crossmember is the passenger front brake line. If it has not been replaced before, it is a home run from abs module to the front fenderwell, where it attaches to the final short rubber/metal length that goes to caliper Least expensive and permanent fix is to replace the line with the nickel copper line, in 3/16 size. Flaring the infamous double bubble can be problematic, but if you are good at normal double flares, you can work around that using purchased double bubble short pieces and using them at the termination points -abs module, final rubber hose fitting- and use your regular flares with connectors to those short pieces. The nickel copper line is flexible and will last forever. The other lines should be checked also. From the ABS module, there is one short line to the driver front, then another homerun along driver side frame rail to the back, where it splits to the driver side rear, and the last line goes from that split,. across the axle to the pass side rear. replacement of the lines can be done DIY, as long as you can flare the line. There are tons of tools out there. You can also buy pre made lengths , though they are costly, and not that easy to snake into place. Lots of folks merely cut out rusted lengths and replace, presuming remaining line is aok. At least in the northeast, the lines rust right after the ABS module and down in the front. I think it is safe to say any 2nd gen XPS that reside in places that have snowy winters either already have new lines, or need them. They are easy to inspect. Start at the abs module. good luck, Tom
