Hi. For the record, I have a 3.0i which regularly sucks coolant into the middle socket on the ECU. You can tell it's coolant cos it's blue and tastes of Glycol. Everything else is dry and it's an easy process to clean up but I'm concerned that one of the pins on the ECU will soon break due to the corrosion occurring in there. Have recently covered everything in WD40 for protection whilst I work out my next move. No idea how the coolant is entering the loom but it's presumably osmosis or static draw that's pulling it in there.