Used car shopping? Replacing your fuel filter requires removing your fuel pump fuse from the fuse box, reducing fuel line pressure, disconnecting the fuel lines, and replacing the fuel pump's fuse. Regardless of their versatility andgerman high-quality,its important to know the topcommon fails and issues with Sprinter Vans. I believe the original problem was the NOX sensors to start with, and there was never any "out of spec" def involved. Remember there typically never any warning in advance, as the flex pipe breaks all at one time. MB has modernized this gasket to improved material called Viton which prolongs life. We have a 2017 Sprinter 2500 extended, high roof cargo.