Sorry to hear your story. There is plenty here to read but for now get as much dried out as you can. If you can borrow one, get a domestic Currys type dehumidifer and leave it in the foot well for a day with the ski hatch open and the trunk tray removed.
How much water was in the trunk under the spare? If the water level got to the roof pump, put a fan heater in the trunk pointing at it (Watch the heat and no more than 1kW setting!).
Ignore anything you read about sunroof drains because that's unlikely to be the main problem. Unfortunately, water leaks are a comon complaint particularly parking outside on up slopes, but the reasons are often varied with no 'One fits all' solution. Careful checking for leaks with a hosepipe comes next. The best way to have an EOS full of water when parked is to forget and leave windows open, particularly the small rears. We have had exceptional rain in U.K last 3 weeks. Concentrate on the drain channel under the back window. It's a very bad design which can flood when there is heavy rain. Parked on an upslope, most of the roof rain falls down the back window into this gulley. You can prove how easily it floods with a hose. I discovered this the first time I left MY07 was up on front ramps. Buy a car cover for long trips away when parked. Talk to your dealer because I think they fitted a flipper type seal on the front of the trunk lid at some time, but it would never make a perfect seal once the gulley floods over.
Hi, tnx for your reply.
The whole boot area is now free from any carpets and mats. Everything is stripped. Spare wheel is 100% dry. Pump & its sponge case isi 100% dry.
Wet areas:
1. Boot lid inside due to a broken 3rd brake light.
2. Left boot arch cover due to drips from the underneath inner left tail light. Unknown reason. Whenever I open my boot lid, water starts to drip from outside, from the gap between the tail light and the boot lid itself.
3. Drivers side fish tank full of water.
4. Passenger side fish tank no water for now but damp all around.
5. Drivers side carpet ( both ) wet as Niagara Falls.
I will strip the whole interior tomorrow and get the carpet to dry somehow. It's dripping wet atm.
I will check both rear drains tomorrow. I haven't taken my top down since September. Not really keen to do so but will have to..
I never got to understand where from water gets into the tanks. There's a post ( might even be yours ) about new type seal but no part number for it. Also you mentioned a new seal above the boot, have you got the part no ?
Around November I've noticed my drivers side seatbelt was a bit damp but I was like..no it was just cold early in a morning when I was going to work. But knowing what I know now is that it slowly started back in November and heavy rains in last 3 weeks was the tipping point.
Anyway..will post photos tomorrow as I work. Hope it won't rain here