Theoretically yes, but likely to cause major damage to the 4WD transfer box.

On other cars, it's generally only done on cars which are basically FWD but with a power take-off and clutched mechanism for the rear drive.

 

No.

 

.

 

No.

If you want a front wheel drive car, sell the Touareg and buy a Golf.

 

Only in low range with locked center differential.