Today i found a puddle under my Audi a4 avant 2002. It looks like water(no smell and no color). On internet i found out that this happens mostly because ac condensate but all cases are describing cooling down cars during hot summer days. In my case its like 3-5 celsius outside, i tried to turn the ac off and went for a short drive but the water still comes out from some small hole(dont know name for this look at pictures). It is placed under front passanger side. Is this normal or should i go to mehanic?