B1LL

My passenger-side Headlight Washer assembly leaks. I removed the entire nozzle unit through the trap door and submerged it in water. With slight air pressure bubbles come out of the small mid-point vent hole.

I saw some old posts suggesting replacing the O-Ring inside, but I can't figure out how to disassemble this unit. Any suggestions on disassembly would be greatly appreciated, or any other ideas, or a source for a replacement part.

konigstiger

Replacement nozzle is part # 2218601447 (replaces 2218600247 installed at production) MSRP $72 to comparison shop, parts.com $51.60

B1LL

Thanks for the reply - the Parts.com site looks excellent.

I squirted silicone spray inside the unit and around the seam between the two halves and into the vent hole. I twisted around the two halves and pulled the plunger in and out with an aim to lubricate O-Rings, etc, inside.

I submerged it and retested - no bubbles! - It may be fixed, so I'll reinstall it and see if it leaks. I'll also purge the line because I'm in Florida and hardly ever use my headlight washers so there may be junk in the line.

I'll post what happens for anyone that stumbles upon this post. I've been a long time lurker on this site, stumbling upon much knowledge but not yet adding to the vast knowledge base.

B1LL

No more leaking! Here's my take on it -

The nozzle units are below the fluid reservoir, so if the internal o-rings get dirt under them, they'll leak. My guess is that simply twisting around the two halves of the unit are what cleaned my o-ring.

For anyone else with a leak that stumbles upon this post - I suspect it could be fixed without removing the unit. By reaching way back through the trap door to the sideways hose and moving it up and down, twisting the back half of the unit. It's worth a try.

S550v

B1LL,

You didn't happen to also take photos while you were investigating? Having a visual would help me see your description clearer. But regardless, I've bookmarked this thread for future reference. Thanks for sharing!

B1LL

Mine never leaked again after what I did 4 months ago (described above).

I didn't take photos, but if you Google 2218601447, you'll see drawings of the assemblies. Enlarge the drawings and you'll notice the sideways hose & nib on the back end of each assembly.

The entire rear half of the assembly can rotate and apparently it has one or more o-rings inside.

I suggest - hold the door open - without removing the assembly - try using something like a long BBQ fork reaching way back to the hose & nib and move it up and down, which will rotate the back half of the assembly clearing debris from the o-rings. Pulling the nozzle & plunger in and out may also help.

If that doesn't stop your leak, you can remove the assembly (it's held in with one screw) and try what I did. Good luck. Post your results.

Jason B

Bump for others with this issue. Good info. Are they still leak free?

B1LL

Not a drop.

1bad540

Not sure it helps but Bmws are notorious for this as well, Ive changed quite a few washer pumps, they usually leek out of a small vent hole. Ive found the pumps as low as 20-25.00 online they usually pull right out and a few connections slide back in.

Jason B

Cool. Mine is still under warranty and my dealer will fix it under warranty. I'm pretty sure they just will replace both tanks, but then the issue could come back? (deciding if I want to get my hands a little dirty, or take it in to them

Jason B

Is this the same issue with me having the leaking washer fluid "tanks" ? My blue fluid leaks when I haven't even used the wipers or squirted any fluid. It seems to happen when it's below 32 degrees. Or are you saying, when fluid leaks, it's come from the headlight washers? I've never used those and don't even know how.

B1LL

A leak in a headlight washer assembly (like I fixed) will create a puddle directly below a headlight. As you suspect, your leak looks like it may be coming from the washer fluid tank.

Jason B

Leaking again after dealer fixed last year... GO figure. Only when temps go below 30.

konigstiger

12 months or less, have them revisit repair.

Jason B

I can't remember where I saw the post, but someone mentioned putting s thicker rubber washer fixed the issue for good. Somewhere, Mercedes uses too thin of a washer and the post said the thicker washer fixes for good?

1bad540

frozen blue puddles under both sides of mine!! so sad ...so sad!!

Jason B

http://www.benzworld.org/forums/w221...sher-pump.html

Jason B

I'm still having this issue. Dealer replaced tank and stuff a while ago and everyone it's below 35° this happens.

1bad540

ewwwww wtf!!