Bebe9803

I filled washer fluid full. Tried using fluid by pressing button and waitong for I think 15 wipes...

Nothing ever sprayed. Not sure if they open.

What's the easiest thing to check.

​​​​​​Fuse, pump etc.

Thanks.

BOTUS

a likely issue you have is because Mercedes specify a designed to fail washer pump - it has lower quality seals - and around the 7 to 10 year mark, these weep allowing the washer fluid to leak by and seize the electrical motor - theses pumps cost around $55 for another short life cycle replacement

or you buy one from ebay for $9 and it functions in exactly the same way, but lasts for 20 to 25 years

konigstiger

See attachments to better understand system and to start checking.

MBKarma

Can you share where you got these .pdfs? I am starting to wrench more on my car and these service manuals are very useful. Thank you!

Jaap

Mercedes WIS (Workshop Information System).
You cannot buy it legally AFAIK.
But you can get if (for free) if you know how to search for that stuff.