I have had a damp boot for a while and after drying out the carpet and leaving a seat down to dry out the boot I went hunting last night. So this may help someone.
The water was on the plastic sill when you opened the boot - sometimes to right as you look in and sometimes at the catch. It turns out the actual lever mechanism on the outside with the SEAT logo has two parts.. the outer part that seizes up.. and then a wee window at the bottom into the aluminium alloy mechanism. This window is factory filled with grease but after 4 years this has gone and the water can just flow down to the window and pool... then it runs into the boot via the mechanism. I filled the well and packed it with Vaseline (silicon grease would also do) and it held the water back. Really poor design as the window is at the bottom so the water will try and pool and get through. Need to remove the back door inside panel to see (5 Torx screws and then a gamble on how many bit of plastic you break..)
Anyway .. another reason for water in the boot
The water was on the plastic sill when you opened the boot - sometimes to right as you look in and sometimes at the catch. It turns out the actual lever mechanism on the outside with the SEAT logo has two parts.. the outer part that seizes up.. and then a wee window at the bottom into the aluminium alloy mechanism. This window is factory filled with grease but after 4 years this has gone and the water can just flow down to the window and pool... then it runs into the boot via the mechanism. I filled the well and packed it with Vaseline (silicon grease would also do) and it held the water back. Really poor design as the window is at the bottom so the water will try and pool and get through. Need to remove the back door inside panel to see (5 Torx screws and then a gamble on how many bit of plastic you break..)
Anyway .. another reason for water in the boot