Due to the fact that it also caught my dear Passat, I was looking for why and where the water comes from in the footroom at the back left. There is no more door foil from Model 3B which could leak!The waterproof end to the outside is the outer seal of the aggregate carrier in the door, BUT the seal is no longer tight. Away from the water:on the outside of the disc down to the plastic rivet that holds the disc.Then over the middle rope pull and H The water runs out at the bottom edge of the aggregate carrier, although it should run out at the bottom edge of the door at the two water drains.Why? Primary cause is that the seal has lost elasticity over the years and is no longer planned.Secondary cause is that the water drains are also clogged at the bottom edge of the door.Remediation: Degrading door lining(instruction in many threads)M6 screws of the aggregate carry turn it out, except for the screw, which sits at the very top towards the engine compartment (only loosen, otherwise the rack slide down).In half height right and left 2 screwdrivers etc. clamp,so that the sheet remains at a distance. Apply a thin layer of silicone on the sealing surface and tighten all screws again.In addition, clear the water drains at the lower edge of the door(2 pieces) with a wire.High pressure cleaner test passed.Washing system passed. tere opinions. Greetings RicSneak