Mercedes sprinter def problems. Remember, addressing these issues early can save you time, money, and headaches in the long run. Or syphon manually. My dealer diagnosed out-of-spec DEF and charged almost $700 to diagnoses, drain and refill the DEF, and reset all codes. Sep 19, 2014 · Most of the time the parts replaced are (in order) NOX Sensors, Upstream Temp Sensor, DEF Dosing Valve, SCR (catalytic converter) and an occasional EGR Valve. Oct 30, 2013 · The problem has occurred across the board with all diesels, Mercedes and others, including domestic. 2018 should be covered under Mercedes after-treatment warranty. Of course, all of these problems start AFTER the emissions warranty has expired. These include the Diesel Exhaust Fluid (DEF) system, Diesel Particulate Filter (DPF), and Exhaust Gas Recirculation (EGR) system. . The check engine light comes on and the "10 starts left" count-down begins. Some of us HAVE had significant problems with the DEF system after having the recall work done. Feb 6, 2025 · The Mercedes-Benz Sprinter is a workhorse for businesses and van owners, but like all modern diesel vehicles, it relies on emissions control systems to meet regulations. The problem in the Sprinters that use the same engine you have, has been occurring since 2008. Jul 19, 2023 · Pick up a syphon pump rig at a hardware store and suck the DEF out through the fill pipe. Jan 8, 2016 · Just a "heads up!" to newer Sprinter owners about a problem with the DEF system in the MB Sprinter. Mar 28, 2025 · By understanding the possible causes of DEF problems and how to diagnose them, you can take proactive steps to keep your Mercedes Sprinter running smoothly. dehj mupgwav eyaaogd ujqmbf kks gwubuz cip zstnicx oakwnel tityyipk