One more question: how much water usually comes out when stopping the van with air con on?
Did not remember this amount with my previous t5. Have never seen, to be honest.
This is from the T6, front and rear
Looks like a speaker symbol, might be an alarm sounding unit but for what?
tracing the wire back seems the only method to uncover it's purpose.
Have a look under the front wheel arch over the top of the tyre at the suspension strut, if a steel spring there then normal suspension but if a rubber bag of some sort then it has air suspension but should have a control unit panel inside or a remote.
I think there will be no problem at all.
The water at the front is probably from the airo at the front.
The water at the rear is from the airco at the rear.
The red box is indeed ultrasonic anti rodent.
The height sensor if for auto levelling of the xenon/LED headlights.
You could track the airo water outlet down if you open the bonnet. Look behind the engine under the windscreen wipers. In the heath shield there will be a black rubber plug with a nose downwards. There is the airo outlet at the front.
The water at the rear would look like this:
Or even worse if the environment is more damp than in France this summer.