[aircooled]

Normally toggling the ESP button does the job. Is this not your experience?

 

[aircooled]

I push the button once and the ESP light displays on the dash. however its NOT completly turned off, it still engages.

The only way I know to totally turn it off is by selcting centre diff lock and selecting low range.

VW42

As you have identified, the Touareg uses ESP and ABS to mimic a center diff when auto diffs are selected when in low range. What mode do you normally run in when in sand and what problems are you experiencing that make you think you need a full ESP disable? I completely agree that ESP should be turned off using the normal method when in deep sand/snow.