2004 Windshield Washer Reservoir
Thread Starter
Member
Joined: Oct 2009
Posts: 76
Likes: 0
2004 E320
2004 Windshield Washer Reservoir
How do you get to this fluid reservoir? I discovered that mine leaks and never realized that until today. I was doing a pre-winter check on all my fluids and after filling it fluid started dripping on the garage floor. I see where the white translucent filler tube goes into the fender well. Is this a DIY project and what would have caused this to leak? Any ideas or solutions to my leaking solution?
tarheel76
tarheel76
Thread Starter
Member
Joined: Oct 2009
Posts: 76
Likes: 0
2004 E320
Thanks for the email pictures. Before I decide IF I want to take on this project what should cause this to leak? Is there bottom drain plug/seal that may be defective? Have you ever had this problem and how labor intensive is this? Thanks....
tarheel76
tarheel76
Senior Member
Joined: Oct 2011
Posts: 314
Likes: 29
From: Coastal Georgia, USA
2007 E350 Sedan
I did this fix in my 2007 E350. Not sure if your configuration is the same. That being said, though, the hardest part by far was gaining access. Had to remove the right front tire and remove/peel back the wheel well covers. Once I did that, though, access was okay.
I had suspected a worn out grommet where the pump goes into the tank-apparently that is a common source of leakage. I replaced that, but my leak remained. On further investigation, I found that my pump itself was leaking, which surprised me. I replaced that, and the leak was gone. The grommet is cheap, the pump not so much so. But I got tired of seeing the puddle on the floor.
I had suspected a worn out grommet where the pump goes into the tank-apparently that is a common source of leakage. I replaced that, but my leak remained. On further investigation, I found that my pump itself was leaking, which surprised me. I replaced that, and the leak was gone. The grommet is cheap, the pump not so much so. But I got tired of seeing the puddle on the floor.
Thread Starter
Member
Joined: Oct 2009
Posts: 76
Likes: 0
2004 E320
Thanks for your response... The previous forum member sent me (4) detailed email pix files in the removal/replacement of the pump assembly. As per the owners manual the reservoir holds 4.8 qts. I started with a full 1.2 gallon container of RainX washer fluid and used 1.5 qts to bring it to the top of the "filler tube". Per my calculations that meant that there was 3.3 qts still in the reservoir. There has to be an "O ring" where the "filler tube" joins the reservoir and my first guess is that is the problem area. I siphoned all of the fluid from the "filler tube" (approx 1 pt.). I will keep watching my garage floor for any signs of leaking fluid. What the heck Columbus took a gamble. I live in extreme Eastern NC.
tarheel76
tarheel76
Senior Member
Joined: Oct 2011
Posts: 314
Likes: 29
From: Coastal Georgia, USA
2007 E350 Sedan
If yours stops leaking after a while (once it gets lower than where the filler neck goes in), that may be right. Mine would go all the way down until the system would flash at me telling me to add washer fluid.
Thread Starter
Member
Joined: Oct 2009
Posts: 76
Likes: 0
2004 E320
I have never had any signals that my fluid was low. Having owned the car for two years I doubt if I have used the washers more than 3-4 times. If the leak goes away I'll just add a qt if I get a light on the dash. Only time will tell.
tarheel76
tarheel76
Trending Topics
MBWorld Fanatic!
Joined: Jan 2009
Posts: 3,182
Likes: 15
From: Northern VA
W211
i have the same issue, Fill to the top and it leaks, but still have some fluid when i do use it to spray the windsheild. I dont get the low on washer fluid, So must be the filler tube oring??
MB World Stories
The Best of Mercedes & AMG
Dubai Tuner Gives the Mercedes G-Class An Entirely New Look
Verdad Gallardo
Six Gift Ideas Your AMG Loving Dad or Grad Will Cherish
7 Craziest Things AMG Gas Ever Built
Verdad Gallardo
New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know
Verdad Gallardo
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)
Verdad Gallardo
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Senior Member
Joined: Oct 2010
Posts: 341
Likes: 4
From: Columbia, MO
E320 & X166
I'm having the same issue as above. I get the check fluid warning, but still has fluid. I added fluid but leaks down to where there is probably only one cup. konigstiger, would you be able to post pics on this thread? 3 years ago I paid the dealership $129 to fix this, the part listed @ only $1! even the name of the part I need to replace, bottom or (if any) top grommet would help. Thank you
Senior Member
Joined: Oct 2011
Posts: 314
Likes: 29
From: Coastal Georgia, USA
2007 E350 Sedan
I'm having the same issue as above. I get the check fluid warning, but still has fluid. I added fluid but leaks down to where there is probably only one cup. konigstiger, would you be able to post pics on this thread? 3 years ago I paid the dealership $129 to fix this, the part listed @ only $1! even the name of the part I need to replace, bottom or (if any) top grommet would help. Thank you
