miketc

I tried to top off the windshield fluid yesterday for the first time. After putting in nearly a gallon into the reservoir, it still didn't top off and a lot of the fluid are spilled/dripped onto the floor. What am I doing wrong? How much fluid does the reservoir hold? Is there a way to check the reservoir level? The reservoir is not visible and I couldn't find it in the owner's manual. Kind of embarrassing to ask these questions but I don't want to keep putting in fluid and have it spilled onto the floor.

Plutoe

Post your VIN!

miketc

Don't know if this matters but here it is: 55SWF4KB2FU040894.

Plutoe

Look under the hood above the rear left front fender----you will see an oblong flap to the 5 liter reservoir------how to fill, when you see fluid running out of the flap one would assume that its full.

Gungaslow

What if fluid just keeps on disappearing after putting in 3 gallons? How is that possible?

ItalianJoe1

The tank is down the back of the fender. If it's not filling and runs out, I'd assume it's broken somehow. Remove the rear half of the fender liner and look for what's broken. Or take it to the dealer if you're still under warranty, but if you ran over something and damaged it, that's on you and won't be covered. It holds a little more than a gallon but unless you spill it everywhere, you shouldn't see it all over the ground, it should just fill up.

Gungaslow

It’s like a bottomless pit!!!

miketc

That's exactly my point. No way of knowing if it's full or not. Dumb MB design.

ItalianJoe1

No, when it isn't leaking, it will fill up right to the top.

Gungaslow

I put the garden hose in there this morning just to see how much fluid it could take..I let it run for 2 minuets on full and it never filled up but nothing was leaking out the bottom either.. where can all this fluid be going? It’s like something from magic show?

miketc

^^^ This is crazy!!

StanNH

Mine fills up easily and is no different than any other car I've ever owned. Takes just over a gallon before it tops off.

Caveman183

Bro. You’re freaking me out with the hose now. Where did you put the hose ??? Take a pic!

auditoamg

Same place the blinker fluid goes....

Caveman183

Lol ^^^

Mr_marko77

Im pretty sure you fill the blinker fluid from the underside while car is in motion 😂

Crankster

5 liters is still a pretty large tank. I don't think I have ever had a car that would take more than 3/4 of a gallon.

auditoamg

Sorry.... You're right. I was thinking my old B8.5 Audi....

ItalianJoe1

Most newer cars take a full gallon once the warning comes on, so when you get the washer fluid warning you can add a full gallon without keeping a half full bottle left over.

netboy

i checked my c450, when i opened the washer fluid cap, there's no fluid inside BUT the warning message never pop up.
should i wait before refilling ?

ItalianJoe1

The cap will only show a little bit, the tank is way down on the bottom, so you won't see anything until it is full 100%. You can't hurt it by filling it, but unless you use it all the time, you have plenty left if you get the message to fill it at the next opportunity. It's not gonna be an emergency.