M-Class (W166) Produced 2012-2015

Need advice. Pump Runs but Water very little washer fluid spraying on the windshield.

Old Nov 13, 2017 | 08:09 PM
  #1  
DanD.'s Avatar
Thread Starter
MBWorld Fanatic!
5 Year Member
 
Joined: Apr 2016
Posts: 1,124
Likes: 205
From: NW
2018 GLC 4MATIC
Need advice. Pump Runs but Water very little washer fluid spraying on the windshield.

Hi All,
Here is my problem: very little washer fluid spraying on the windshield. I did look under the hood by the wipers, all looks good and tight.
Looks like pump cant get enough pressure, or something is in the tank.
Whats your opinions?

here are some videos:

https://drive.google.com/open?id=1co...i9f_yqjfpCCToY

https://drive.google.com/open?id=1P6...egQ8pu0WXlSI43
Reply
Old Nov 13, 2017 | 09:05 PM
  #2  
Barry45RPM's Avatar
MBWorld Fanatic!
 
Joined: Mar 2004
Posts: 5,017
Likes: 16
From: Ft. Lauderdale Area, USA
2015 ML 350
Originally Posted by DanD.
Hi All,
Here is my problem: very little washer fluid spraying on the windshield. I did look under the hood by the wipers, all looks good and tight.
Looks like pump cant get enough pressure, or something is in the tank.
Whats your opinions?

here are some videos:

https://drive.google.com/open?id=1co...i9f_yqjfpCCToY

https://drive.google.com/open?id=1P6...egQ8pu0WXlSI43
I had this problem. Dealer said it was a clogged filter bottom of the tank. Had to remove fender liner to get to it.
Reply
Old Nov 13, 2017 | 11:31 PM
  #3  
DanD.'s Avatar
Thread Starter
MBWorld Fanatic!
5 Year Member
 
Joined: Apr 2016
Posts: 1,124
Likes: 205
From: NW
2018 GLC 4MATIC
Originally Posted by Barry45RPM
I had this problem. Dealer said it was a clogged filter bottom of the tank. Had to remove fender liner to get to it.
Did you buy the new filter or just washed it?
Did you remove the front wheel or just turned it?
Thank you.
Reply
Old Nov 14, 2017 | 10:23 AM
  #4  
Barry45RPM's Avatar
MBWorld Fanatic!
 
Joined: Mar 2004
Posts: 5,017
Likes: 16
From: Ft. Lauderdale Area, USA
2015 ML 350
Originally Posted by DanD.
Did you buy the new filter or just washed it?
Did you remove the front wheel or just turned it?
Thank you.
Dealer did it under warranty. I had coffee.
Reply
Old Nov 14, 2017 | 06:17 PM
  #5  
pcy's Avatar
pcy
MBWorld Fanatic!
 
Joined: Mar 2004
Posts: 1,175
Likes: 24
From: Boston, MA
'14 ML350, '13 C220 CDI, '07 C280, '98 ML320
It's likely the strainer on the pickup line (on the motor end) is clogged. Pull the fender liner, pull the motor out and you will see the strainer attached. Wash the strainer, clear the strainer and put it back.
Reply
Old Nov 14, 2017 | 06:32 PM
  #6  
DanD.'s Avatar
Thread Starter
MBWorld Fanatic!
5 Year Member
 
Joined: Apr 2016
Posts: 1,124
Likes: 205
From: NW
2018 GLC 4MATIC
Originally Posted by pcy
It's likely the strainer on the pickup line (on the motor end) is clogged. Pull the fender liner, pull the motor out and you will see the strainer attached. Wash the strainer, clear the strainer and put it back.
Yea, this my tonight project.
Wondering if any chemicals can be used as those what plumbers are using in bathtubs or showers ) it might damage pump.
Reply
Old Nov 14, 2017 | 10:22 PM
  #7  
DanD.'s Avatar
Thread Starter
MBWorld Fanatic!
5 Year Member
 
Joined: Apr 2016
Posts: 1,124
Likes: 205
From: NW
2018 GLC 4MATIC
Originally Posted by pcy
It's likely the strainer on the pickup line (on the motor end) is clogged. Pull the fender liner, pull the motor out and you will see the strainer attached. Wash the strainer, clear the strainer and put it back.
Just finished it. All works just perfect.
You were absolutely right, there was something in the filter.

Thank you all for your help.
Reply

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Thread Tools
Search this Thread
Rate This Thread
Rate This Thread:
You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 11:17 AM.

story-0
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-1
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-2
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-3
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-4
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-5
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-6
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-7
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-8
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE
story-9
10 Most Reliable Mercedes-Benz Models You Can Buy Used

Slideshow: From bulletproof sedans to surprisingly tough SUVs, these Mercedes models proved that the three-pointed star can go the distance.

By Verdad Gallardo | 2026-04-08 09:55:49


VIEW MORE