If the air hose is plugged into the seat base the car won't adjust its height. Some guys use a "plug" to trick it into staying at losing level.
Since the Porsche is a VW based car, would the vag com work on it? I know that there was a group of settings you could change on the touareg that would bypass the speed limit. The thing is, the cayenne was never intended to be an off road rig. More of a awww **** theres 4 inches of snow on the way to the cigar shop type vehicle. Yes it can do it since its touareg underneath, but 99.9 percent of cayenne drivers don't want to get their loafers dirty.
First, it's the other way around. The platform was co-developed, but Porsche was the primary design house. The Touareg was the byproduct.
Secondly, they share some parts but there is far more that's different than the same. The entire electrical system is different, it's not VAG-COM compatible. You need the Porsche system to access it.
The engines are completely different. The transmission is mechanicaly the same, the torque split in the transfer case is different, gear ratios different, suspension springs, businings, tuning, rates, sway bars, tuning, all different.
The Cayenne was actually designed to be an off road and a tow vehicle. Moab was even one of the factories test locations.
The Caeyene was available with lockers, rock rails, steel skid plates, auto disconnecting anti-sway bar, rear tire carrier, dual batteries, on board air, hill hold, built in roof rails, air suspension, 2:73:1 low range gear box, and a deep low first gear and fits 32s stock. This is littlerally more off road and back country options than you can get on a Jeep from the factory.
After dominating the Transsyberia Ralley multiple years in a stock Cayenne S (safety and recovery equipment were allowed changes)
Then you could even buy Transsyberia editions that could include light bars and other additional options not available before.