I don't know if this is something that can be done by Vagcom... or can even be done at all?
I'm usually parked on a driveway facing forward with a couple of other cars on it. Sometimes (depending where the other cars are) it can be a tight squeeze to get out of - and the front sensors come in quite handy.
The only problem is that the sensors only come to life if I either put it in reverse first - or if I press the parking sensor switch.
Either way, the sensors only stay on till I get to about 15mph - then they switch themselves off. Ideally I'd like them to be on when I start the car - as once I start moving and reach 15mph, they'll switch off anyway.
Another thing that'd be useful is if I could keep my reverse camera on when my parking sensors are on too.
When you put it into first from reverse - it stays on the screen for a second, then switches on. When maneuvering into parking spaces it'd be quite handy to be able to see where the back of the car was - to make sure its inside the white lines!