Thanks for the write up, I was on here for years with a 1987 300D and now I'm back with a 2010 3500 Sprinter with a Class A MH on it. I just tore the front brakes apart to inspect, measure and to clean and re-lube the slide pins. Still have plenty of pad and rotor left. Slide pins were not frozen and all caliper pistons move freely. Will be doing the same in the rear. After that I'm doing a complete power flush. Trying to remedy what I feel is a low pedal. I know the Sprinter is known for a lot of pedal travel, more than most vehicles, but I feel mine is excessive as the brake pedal goes far enough down that your foot can press the accelerator at the same time. Folks on the Sprintersource recommended slide pins first then a power flush/bleed,
AFAIK the system has never been opened.
Not a lot of DIY activity on the NCV3 Sprinters, seems most of the Sprinter DIY's own T1Ns.