I've got something for you again

My wife can actually do without tiled water in the passenger footroom because she prefers to wash her feet at home.
I have now 2 weeks and a week ago found out that in the footroom (passenger) water and then immediately the overpressure of the cooling water burst - so I to the dealer and said: "Do what!" finally gave me half a year full guarantee on the car. Of course I thought that the water has done itself - but thought blow cake now is the fucking matte again dripnass (is also soooo easy to get dry grrr)
Can anyone tell me where the water comes from????
Speculating allowed