water leak

Hi all. I have a leak of some sort on my 2017 T6. I think it is a coolant leak somewhere in the system bit so far 2 separate garages havent been able to locate the source of the leak. I'll add some pictures. I think that when the van is at running temperature, there is a small leak coming from...

Hi all. On the back right hand wall of the engine bay is a round rubber plug not attached to anything. I've recently spotted some water (quite a big) coming from it and dripping under the van (2017 T6). I've had no warning lights and coolant level appears to be stable, but I thought this was...