Don, I imagine that a reset is absolutely in there somewhere, because if a dealer did a DPF replacement, they would need to do a "reset" also. Perhaps someone from Ross Tech could chime in with an answer....I had assumed that somebody would figure out how to do this. It's good to know that it is now possible to do this. Now all we need to do is to figure out how to reset the ECU (with VCDS, I assume) so that it knows that we now have a "new" DPF. I wonder what the turn around time will be.
This.... ^^^^^ I have to agree 100% with this.. clear the code and away you go.. the ECU should be intellegent enough to read the soot lvls again..I am by no means an expert, but this is my two cents.....
The ECU is taking readings from the exhaust system. A new DPF (empty DPF) would provide or send back different readings than a full/clogged DPF, thus the DPF settings/readings would indicate as such and the car will adapt accordingly. Did that make sense?
Cleaning out a DPF or replacing the DPF will generate new readings and I'm sure the ECU will realize this. You might have to use VAGCOM to clear any codes associated with DPF issues, but my guess is the car (ECU) will figure it out.
When you remove or disconnect the battery, some of the "idiot lights" come on, but quickly go out after the car runs for a minute or two. I would think the same would occur after changing/cleaning the DPF.
My thought process exactly!I wonder what a smog / exhaust test would tell us if you compared 3 cars...
1) a Pre - clean diesel TDI (before 2009 models)
2) a 2009+ TDI
3) a 2009+ TDI with a DPF delete and tune?
I bet #3 wouldn't be any "dirtier" than #1. Anyone care to guess? AND if #3 isn't any worse or is the same as #1, a DPF delete and tune would be my choice once my DPF clogs up.
You can check your ash load via vagcom I believe.One of the problems people are going to have if they are thinking about getting the DPF cleaned out is the timing of it. It's not like waiting to change your oil or DSG fluid. Since there doesn't appear to be any solid history as to when the DPF clogs up, you have to guess on when the best time would be to take it to a shop and have it cleaned out. You could end up taking it in prematurely. And if you wait too long, then potentially you might have to have your car towed to the shop.
What "warning" signs do we have that the DPF is almost full? Excessive regens? If the DPF light comes on is there a certain amount of time before the car would go into limp-mode?
This is interesting... wondering if a used DPF were installed and the reset was toggled if it would come back with the ash load starting from zero or would it give its best guess based on the monitored sensors...?Any new info on this thread?
I looked within my vagcom and found the manual regen at location 13 and also a reset for a new DPF or main computer at location 15.