Mercedes W205 Front washer jets do not work...
Mercedes W205 Front washer jets do not work...
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Discussion

Megaflow

Original Poster:

10,820 posts

246 months

Wednesday
quotequote all
It's a 2019 C Class, the front jets do not work, but the rears do.

A quick search of Google says it is a single pump that does both front and rear outlets, which suggests the pump is fine and the jets are blocked, but disconnecting the hose from the jets and nothing comes from it. Blowing down the hose in both directions suggests no blockages either...

What am I missing?

snotrag

15,433 posts

232 months

Wednesday
quotequote all
Megaflow said:
What am I missing?
Whats the temperature outside?

Megaflow

Original Poster:

10,820 posts

246 months

Wednesday
quotequote all
snotrag said:
Megaflow said:
What am I missing?
Whats the temperature outside?
A fine question I should included, when the problem first appears it was around zero, but it is 6 degrees today and no change. I can also blow through the jets.

They are fan style jets if that makes a difference.

snotrag

15,433 posts

232 months

Wednesday
quotequote all
Megaflow said:
A fine question I should included, when the problem first appears it was around zero, but it is 6 degrees today and no change. I can also blow through the jets.

They are fan style jets if that makes a difference.
I only ask as the Washer jets on my Merc have seemed very prone to freezing up this week, more than I'd expect. had to swtich to neat screenwash to prevent it.

Megaflow

Original Poster:

10,820 posts

246 months

Wednesday
quotequote all
Interesting. I have put some stuff neat into it as well thinking that might be the issue, but I am now wondering if I have got the dreaded sludge from mixing screen wash brands...

Either way, it seems I need to dig the pump out for a look later.

Joy.

fooman

768 posts

85 months

Wednesday
quotequote all
Can you hear the pump working?

Megaflow

Original Poster:

10,820 posts

246 months

Wednesday
quotequote all
Yes, pump is running, and it is a single pump, with two outlets that supplies the rear as well.

Which actually now I have just typed that, means it can't be sludge...

scratchchin

Megaflow

Original Poster:

10,820 posts

246 months

Wednesday
quotequote all
Turns out it was sludge. Pump goes one way for the front screen and the other for the rear, somehow the front rotation is a lot more powerful than the rear, and it was getting just enough fluid to make the rear work, of a fashion, now it is back to full health the rear is better than it was.

Judging by the colour of the sludge, it was my own fault for putting ready to use screen wash from Tesco, to improve the freezing point, on top of my usual stuff…

Lesson learned.