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X5 E53 (1999 - 2006)
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Old 04-05-2013, 10:35 AM
babyduke babyduke is offline
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Location: CHICAGO
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Mein Auto: X5
Leaking washer fluid

Whenever I fill up the washer fluid, it leaks back to this level and I'm having trouble locating where it's leaking. Any idea? Thanks in advance.
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Old 04-05-2013, 12:14 PM
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boramkiv boramkiv is offline
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Location: Chesapeake, VA
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Mein Auto: Some Bavarian car outside
There are rubber grommets that each of the three pumps sit in that secures the pump inside the reservoir. Over time those grommets can wear out and cause a leak. There's a tough one to get to on the back corner. It could be the grommets that need changing out or if any lines were messed with they need to be secured tightly.
Common among the E53 is the front end headlight washers. If tucked out of the way or disconnected and not secured, a leak could develop.
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Old 04-06-2013, 06:24 AM
upallnight upallnight is offline
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There a guy on www.xoutpost.com that has the same problem.

Here's the thread

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Old 05-02-2013, 08:13 PM
BMWReeFeR BMWReeFeR is offline
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Location: Oklahoma
Join Date: Apr 2013
Posts: 4
Mein Auto: E53 X5
Leaking washer fluid

I thought it was the grommets too when I initially had this problem. I thought the had become brittle from age and time, but when I was troubleshooting it seemed they weren't the problem at all. It took a little while to find the leaker, but it turned out to be a plastic 90 hose connector. If you've checked the grommets and the seem to be in good shape, start checking the plastic 90s. Mine was tough to find since it was towards the back of the reservoir. Cheap piece that bugged the crap out of me. Good luck finding your leak.

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Old 05-03-2013, 10:13 AM
Westie1 Westie1 is offline
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Location: No Virginia
Join Date: Jan 2008
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Mein Auto: 98 528i, 2002 M5, 2005 X5
Fix it right the first try

Tips on this one fix.

Replace both rear pumps and the seals and mini filters. My 2005 X5 4.8iS was leaking like there was a hole in the box. Replaced one pump with seal and the leak slowed down to 1 gal in 48 hours. Replaced the second pump and seal ... problem solved. Removal of the tank is real simple:

Pull the electical connectors off the rear pumps (2x) If equipted.
Remove the headlamp pressure fluid line (cut clamp first) H/L Pump is the one on the side closest to the engine. The BIG ONE
unbolt tank from vehicle body
pull pumps from tank
Inspect all hose lines and the 90 degree plastic lines for breakage
pry out seals from tank
Clean tank with deluted clorox (1/2 cup per gal) let sit with mixture for 30 mins
Rinse. scrub tank and sealing cap with dawn dish detergent, Armour ALL
install new seals and pumps (cheap $$)
bolt back in and connect electrical connectors, clamp pressure line to headlamp pump.
add 2 gals of winshield solvent
problems solved

Last edited by Westie1; 05-03-2013 at 10:53 AM.
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