I had my B in for service at about 50,000 miles because of DPF build up. It turned out to be faulty computer electronics wiring that needed fixing that was not triggering DPF regeneration. It was all fixed under warranty that was good for 100,000 miles. That's why MB previously said DPF problems would not show up before hand. They wouldn't warrant it otherwise I would think.
Anyway, they said DPF regens were suppose to happen about every 600 miles driven. After fixing, they had a way to force DPF regen in the shop before letting it go. They had a way but I suspect it was computerized shop diagnostic tools.
They seem to be comfortable with idling up to 2 hours between driving up to at least 40 minutes. I never idle for charging anyway but I can program when Autogen starts based on SOC and how many minutes to idle for up to 115 minutes. If the batteries fully charge while idling then they shut off automatically regardless of the stated minutes programmed. If I don't program Autogen then the batteries will shut down at 20% SOC and in order to turn the batteries back on I simply have to turn the engine on and hold down a button to force charge the batteries back up to 21%. That by the way is a pain to hold a button down and that's why I have my Autogen to come on at 30% SOC. This is all in testing the system. 30% is because if you are running air conditioning or other high power stuff you can overshoot the shut off before it kicks in. With an 800ah battery bank that would be an extremely rare occurrence unless you were attempting to run air conditioning over about 5 hours. I've never done that either.
This is Advanced RV's Autogen. I have no idea what Roadtrek does in Voltstart.
2015 Advanced RV Ocean One Mercedes Benz Sprinter
Previous Class Bs:
2011 Great West Van Legend Sprinter
2005 Pleasure-way Plateau TS Sprinter