alohart
Posts: 1989
Joined: Sat Nov 01, 2014 7:36 pm
Location: Honolulu, HI

Leaking windshield washer fluid reservoir

Fri Mar 20, 2020 6:27 pm

Not a big problem in the grand scheme of things, but it surprised me nevertheless.

For the first time in 5.5 years of ownership, I topped up the windshield washer fluid in our 2014 BEV. I filled the reservoir to the top of the filler tube. As I was walking away, I heard a liquid impacting the garage floor. Sure enough, it was windshield washer fluid that was leaking out of the joint where the filler tube attaches to the tank as can be seen in this photo:

Image

Never having owned a BMW previously, is this normal? Should the windshield washer fluid level remain below this joint and never rise into the filler tube?
Aloha,
Art

2014 BMW i3 Arravani Grey, Giga World, Tech + Driving Assist, Parking Assist, DC Fast Charging, JuiceBox EVSE

eNate
Posts: 386
Joined: Mon Sep 09, 2019 5:33 pm

Re: Leaking windshield washer fluid reservoir

Fri Mar 20, 2020 7:05 pm

Oh, that's odd. The owners manual gives a minimum fill quantity, but not a max or "fill to."

But how could it be anything other than filling to the top of the neck.

In that photo you shared, do you think that black line could be an O-ring where the neck connects with the reservoir? I wonder why BMW would do than instead of glued connection.

Edit: Huh, found a neck on eBay. https://www.ebay.com/itm/2014-2019-BMW- ... 2800820799
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alohart
Posts: 1989
Joined: Sat Nov 01, 2014 7:36 pm
Location: Honolulu, HI

Re: Leaking windshield washer fluid reservoir

Fri Mar 20, 2020 11:30 pm

eNate wrote:
Fri Mar 20, 2020 7:05 pm
In that photo you shared, do you think that black line could be an O-ring where the neck connects with the reservoir? I wonder why BMW would do than instead of glued connection.

Edit: Huh, found a neck on eBay. https://www.ebay.com/itm/2014-2019-BMW- ... 2800820799
Thanks for the find! Before you referenced a used neck being sold, I didn't think that the neck was a separate part because RealOEM doesn't list it as a separate part. I tried to rotate the neck to learn whether it was loose, but it didn't budge.

The black line could very well be an O-ring that is intended to seal the joint. I'll look more closely to see whether I can see that black shadow of an O-ring. Maybe the O-ring is missing. Now that I have some spare time on my hands (thanks, COVID-19 - NOT!!), I might try to disconnect the neck to take a better look.
Aloha,
Art

2014 BMW i3 Arravani Grey, Giga World, Tech + Driving Assist, Parking Assist, DC Fast Charging, JuiceBox EVSE

JohnWasser
Posts: 27
Joined: Sat Mar 07, 2020 6:15 pm

Re: Leaking windshield washer fluid reservoir

Sat Mar 21, 2020 6:20 am

I see that the SAME account is selling the reservoir body:
https://www.ebay.com/itm/2014-2019-BMW- ... 2800820814

Note the little tab on the side of the neck to which the filler tube attaches. Might be a bayonet attachment so you might need to push in and turn?

alohart
Posts: 1989
Joined: Sat Nov 01, 2014 7:36 pm
Location: Honolulu, HI

Re: Leaking windshield washer fluid reservoir

Thu Mar 26, 2020 12:35 pm

eNate wrote:
Fri Mar 20, 2020 7:05 pm
In that photo you shared, do you think that black line could be an O-ring where the neck connects with the reservoir?
This is a photo of my leaking windshield washer fluid reservoir filler tube. Note that the black line isn't straight like that in the photo of a random reservoir that I posted earlier and is lower down in the filler tube. Maybe this O-ring isn't in its proper place. I'll try to remove the filler tube to investigate.
Aloha,
Art

2014 BMW i3 Arravani Grey, Giga World, Tech + Driving Assist, Parking Assist, DC Fast Charging, JuiceBox EVSE

trumpetdoug
Posts: 26
Joined: Tue Feb 04, 2020 8:46 am

Re: Leaking windshield washer fluid reservoir

Thu Apr 02, 2020 11:53 am

Good informative post. Looking forward to seeing what you find out.


Doug - out

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