Although there are many who run Touregs with weight distributing (WD) hitches, Volkswagen states they are not to be used with the Toureg. I discovered this when researching a new tow vehicle and it was confirmed during a visit to the dealer. Chances are running a WD hitch with a Toureg won't be a safety issue but could cause problems in the event of a warranty or insurance claim"
Our 2012 TDi Touraeg shows limits (they are the same) with and without a WD hitch.
Volkswagen, go figure.
I think that the Taureg/Cayenne/Q7 confusion is due to the fact that in Europe WD hitches are illegal since the 1960's or 70's - so they build their trailers smaller & lighter (including Euro AS), so they say no WD on their Euro &/or RoW (Rest of World) documentation.
However, it is legal in the USA & Canada (& elsewhere), so VW, Porsche & Audi sometimes corrects their verbiage in the owners' manuals & sometimes not, & that seems to vary from model year to year too. Then some dealers & their employees are likewise confused & pass along incorrect info. (who in my experience are generally too lazy to check on details, don't know how/where, &/or get the wrong info & pass it along as correct).
If the same platform in 3 different skins - with some difference in engines, transmissions, brakes & suspension, etc. between the makes & their sub-models - and essentially the same hitch on all 3 makes
regardless of the other details can be used with WD in some years/makes/models - then it certainly can be on others, & shouldn't be a problem insurance nor warranty wise.
As some above have noted & others on the various other topic posts on the Euro-3 have noted, they can & do tow with WD & is usually accepted as approved - except for a dealer trying to CYA or wiggle out of something. I've read somewhere in AirForums or on the RennList Cayenne forum that somebody checked with the North American branch of VW &/or Porsche, who said that it is fine to use WD hitches.
So those 3 makers need to get their acts together & their docs straightened out to stop all of this confusion, because the misinformation could cause someone who should be using WD/Anti-sway to not & then have a serious accident, & then make a serious legal claim against them for all the misinformation!
However, I would NOT & never again try towing our single axle Avion with a short wheelbase mid-sized SUV without a WD/Anti-sway hitch for another white knuckle ride! Did it once with the rented Pathfinder & that was plenty for us - it's just way to squirrely over 50-55 & in cross winds without something! Nary a problem since the Hensley Cub was installed (the bigger rented F150 pick-ups had their own built-in anti-sway tow package to solve that problem in our pre-Cub days).
That said, it's worthwhile to read up &/or contact the folks at CanAm for possible hitch reinforcement if you're towing at the upper limits of the hitch rating.
I checked with Andy T & he said that our `60 Avion T20 at about 3000-3500 lbs wet & loaded wouldn't need the reinforcement, but each trailer is different (that info is at the Treg/Cay/Q7 link I provided in my prior post above).
I'll have to check on the Tekonsha Prodigy RF pairing issue on the T/C/Q trio as noted above whenever we finally get our own Cayenne S (soon we hope), but I never had any problems pairing it with the other rented TVs, & it actually did not requiring pairing when we rented the same type vehicle the next time, the RF remembering all the settings & paring issues as if it were the same truck or Pathfinder.