Here are the manuals for CATA/CNRB engines covering all years/models the TDI Touareg was offered in North America.
They can be found for free in other places with a stupid amount of ads, its just annoying and always useful to have the PDF so you can CTRL-F or go through the hierarchy.
I'm not sure if CATA was posted here before, if so I couldn't find it.
Note that Audi Q7 TDI 2013-2016 MY and all MY of Porsche Cayenne share the CNRB engine, so the VW guide is applicable to both.
CATA - 2009-2012
These manuals in google drive