Something is leaking

[Froglet]

So, I have noticed some coloring underneath the car before but thought it may have been someone else who had parked there before me. However, when I approached the car today I saw it was wet. I felt the underside of the car to see where it came from and it is indeed my car that is leaking...

It's definitely not oil and I have the feeling it may be the liquid in the reservoir for cleaning the windows. It's a transparent liquid that is as liquid as water. See the pic attached. The arrow indicates where it is wet on the underside of the car.

The coloring on the floor is most likely some liquid + the desert sand that we get around here...

An idea what could be leaking here?

[thekurgan]

Looks like evap water, possibly taking some dirt from the undercarriage with it before hitting the floor.

[kb9uwu]

Originally Posted by Froglet

So, I have noticed some coloring underneath the car before but thought it may have been someone else who had parked there before me. However, when I approached the car today I saw it was wet. I felt the underside of the car to see where it came from and it is indeed my car that is leaking...

It's definitely not oil and I have the feeling it may be the liquid in the reservoir for cleaning the windows. It's a transparent liquid that is as liquid as water. See the pic attached. The arrow indicates where it is wet on the underside of the car.

The coloring on the floor is most likely some liquid + the desert sand that we get around here...

An idea what could be leaking here?

Your windshield washer tank or pump is leaking. It's located right behind the front passenger tire. Had same issue on my 08 E90

[Froglet]

The liquid is indeed windshield cleaner. I placed a cup under the car and collected some of the liquid. Smells exactly like the stuff I put in the reservoir the other day...

[Quicksilv3r]

What if you installed a new pump and new grommet and it's still leaking? I'm having this problem now. Unable to solve.

[anom3]

One thing to keep in mind with the wind shield washer fluid:

Its really easy to overfill... In my case anyways...

When I top it off "to max", where I fill it till I see it in the black hose where you fill it and I go for a drive, it leaks out of the side grill where the side turn signal is.

Maybe you have very recently filled your fluid to the max?

[Quicksilv3r]

Originally Posted by anom3

One thing to keep in mind with the wind shield washer fluid:

Its really easy to overfill... In my case anyways...

When I top it off "to max", where I fill it till I see it in the black hose where you fill it and I go for a drive, it leaks out of the side grill where the side turn signal is.

Maybe you have very recently filled your fluid to the max?

That must've been the problem - I filled it to the brim a couple days ago and after driving around for a short time, the leaking appears to have stopped. Good to know as I was hesitant to pull the fender liner out for a 3rd time to investigate it further.

[anom3]

Yeah, same thing happens in my vehicle.

I'll add that I don't know if this is "normal" behavior or a sign of a leak "near the top" of the reservoir or the tube that connects to the reservoir.

Anyone else want to chime in if they are able to fill the washing fluid "to the max" and not have any leak out before and after a drive?

Originally Posted by Quicksilv3r

That must've been the problem - I filled it to the brim a couple days ago and after driving around for a short time, the leaking appears to have stopped. Good to know as I was hesitant to pull the fender liner out for a 3rd time to investigate it further.

[///M Power-Belgium]

When I run high speed turns I can smell my wind shield washer fluid always in the car.