Good luck
My car had this and on initial inspection it seems to be the battery coolant leaking all over the batteries. Tomorrow my car will have been with the dealer for 4 weeks and is still awaiting a more thorough examination by the master technicians.
Will this be covered under warranty is the question that has still yet to be determined. At the very least it's probably going to need the batteries replaced, but others with similar have had to have the batteries, electric motor and engine fully replaced.
Just to diagnose the
problem (if not covered under warranty) is going to be £470. The fix is potentially looking at almost £10,000 if all those components need replaced, the question is still unanswered, who is picking up the bill, me or Seat.
It's worrying times.