# 2017 Mercedes-Benz C-Class - Weak stream

**URL:** <https://community.cartalk.com/t/2017-mercedes-benz-c-class-weak-stream/164590>\
**Category:** Maintenance/Repairs\
**Tags:** mercedes-benz\
**Created:** [May 20, 2020, 3:00am UTC](https://community.cartalk.com/t/2017-mercedes-benz-c-class-weak-stream/164590 "2020-05-20T03:00:37Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![Ron35](https://avatars.discourse-cdn.com/v4/letter/r/e9bcb4/32.png) [@Ron35](https://community.cartalk.com/u/Ron35)\
**Post date:** [May 20, 2020, 3:00am UTC](https://community.cartalk.com/t/2017-mercedes-benz-c-class-weak-stream/164590/1 "2020-05-20T03:00:37Z")

</div>

Hi, windshield fluid tank is full. When I try to use it, it only will splash a little bit of fluid on the glass and the won’t do more. Need help to fix it

---

<div class="post-metadata">

**Author:** ![davepsinbox\_157004](https://avatars.discourse-cdn.com/v4/letter/d/73ab20/32.png) [@davepsinbox\_157004](https://community.cartalk.com/u/davepsinbox_157004)\
**Post date:** [May 20, 2020, 3:09am UTC](https://community.cartalk.com/t/2017-mercedes-benz-c-class-weak-stream/164590/2 "2020-05-20T03:09:09Z")

</div>

If the pump is working correctly either there’s a break in the line/line has come loose or the nozzles are aimed too low. Open the hood and check the lines. If possible have someone else run the washers and look for leaks. If the lines look all right and there are no leaks try reaiming the nozzles.

---

<div class="post-metadata">

**Author:** ![Ron35](https://avatars.discourse-cdn.com/v4/letter/r/e9bcb4/32.png) [@Ron35](https://community.cartalk.com/u/Ron35)\
**Post date:** [May 21, 2020, 12:14am UTC](https://community.cartalk.com/t/2017-mercedes-benz-c-class-weak-stream/164590/3 "2020-05-21T00:14:16Z")

</div>

How do I know If the pump is working correctly?  
It splashes 1 time an small amount of washer, I have to keep hitting multiple time.  
Also the lines are hidden

---

<div class="post-metadata">

**Author:** ![davepsinbox\_157004](https://avatars.discourse-cdn.com/v4/letter/d/73ab20/32.png) [@davepsinbox\_157004](https://community.cartalk.com/u/davepsinbox_157004)\
**Post date:** [May 21, 2020, 12:22am UTC](https://community.cartalk.com/t/2017-mercedes-benz-c-class-weak-stream/164590/4 "2020-05-21T00:22:09Z")

</div>

Yeah, there’s a problem somewhere, possibly with the switch for the pump. I don’t own a Mercedes but on every car I have owned or driven the pump kept spraying as long as you held the switch in place. Either the pump is quitting or it’s running out of fluid, which would happen if there were a leak in the system. If it’s no longer under warranty take it to a good independent shop, possibly one that specializes in German cars.

---

<div class="post-metadata">

**Author:** ![Ron35](https://avatars.discourse-cdn.com/v4/letter/r/e9bcb4/32.png) [@Ron35](https://community.cartalk.com/u/Ron35)\
**Post date:** [May 21, 2020, 1:22am UTC](https://community.cartalk.com/t/2017-mercedes-benz-c-class-weak-stream/164590/5 "2020-05-21T01:22:57Z")

</div>

Sounds good, Thank you!