I have read some great advice on this forum before about the common water-under-seat leak problems and possible battery drains, but after trying all the suggestions I still have a mystery drain on my battery.

First visible problem was water welling up on the floor carpet in the rear (driver-side). Checked plenum area (as suggested in previous posts), but drain holes are fine; no evidence that the battery compartment has ever flooded. Likewise, no problems with pollen filter. I do have sun-roof, so there's a chance water is coming in through there somehow; I checked the suggested inspection points but can see no blockages. (though I am mystified by the 'teats' in the front door slam panels, which apprently need squeezing, according to previous posts...? Or were they having us on?)

Have raised carpets on all sides; ECM module on passenger side is fine and dry (I have no operational electronic problems at all anyway). Did find water underneath rear driver-side, as expected, and a little underneat driver seat; cables that run through these areas appear to be fine though, no corrosion visible, wire shielding appears production-line intact.

The standing drain on my battery is 0.09A (yes, 90 mA); this seems too high, this will drain my 70Ah battery in 30 days. Am I being too picky? Is this normal? I read previously on a forum that the standing drain should be on the order of 5 mA (or 0.005 A)

So I started taking out fuses (even the two power-window fuses besides the relay panel). After taking out *all* fuses, I still have a drain of 50 mA [so, the 'normal' drain should have been about (90 - 50 =) 40 mA.]

Are there any systems that would still be draining the battery even with all fuses removed? Where else could there still be a drain, that may or may not be related to the water underneath the carpet?

How about the alarm system? I couldn't identify a fuse for that, but I know I have one in the car. Does this need re-setting after reconnecting the battery or something similar that would stop the permanent drain? Is there a way to entirely switch off the alarm system at a root?

Any advice very welcome! I'm at a dead end now...

D