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  #1  
Old 09-21-2009, 06:06 PM
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Pulling my hair out. How do you check and adjust power steering fluid level on 400E

Probably the simplest question in the world! Neither google, forum searching, nor the owner's manual give any answer!

There is a yellow stalk in the PS reservior that says "max 20c" and min 20c"

Does this mean PS fluid has to be checked at OP temp? Engine running? Engine not running?

Why is this so hard!

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  #2  
Old 09-21-2009, 06:40 PM
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20C is room temp (68F)....so engine off. Just fill it to the Max level marker when its cold with a normal power steering fluid like non-synthetic valvoline....that's what I use.
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  #3  
Old 09-21-2009, 06:41 PM
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It's not super picky. Just fill it so its between the marks, and keep the filter and fluid current

-Jason
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Old 09-21-2009, 07:21 PM
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With this thread being here....Do you drain/flush PS fluid at all? Or just get it all out of the tower and refill?
I need to do this on both my cars. Never done it before.
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Old 09-21-2009, 07:23 PM
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Rock on - thanks

It was not visible at the bottom, which I suspect is why it was groaning this morning.
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  #6  
Old 09-21-2009, 07:25 PM
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Quote:
Originally Posted by ps2cho View Post
With this thread being here....Do you drain/flush PS fluid at all? Or just get it all out of the tower and refill?
I need to do this on both my cars. Never done it before.
One thing I did find in my search were a couple threads about flushing. Sounds like you run a couple quarts through the system, turning the wheel back and forth, then filling. That's what I got out of it anyway.

I'm hoping I can limp my old, dried-out, heat-overexposed pump along indefinitely by just adding some fluid every few k
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  #7  
Old 09-21-2009, 08:29 PM
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Quote:
Originally Posted by Will_w202 View Post
One thing I did find in my search were a couple threads about flushing. Sounds like you run a couple quarts through the system, turning the wheel back and forth, then filling. That's what I got out of it anyway.

I'm hoping I can limp my old, dried-out, heat-overexposed pump along indefinitely by just adding some fluid every few k
I've been limping the pump on my SD that way for a couple years now.....it leaks about a reservoir full every 1000 miles....I even have a spare pump....I've just been too lazy to install it.
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'15 GLK250 Bluetec 88k - mine - (OC-91,200)
'17 Metris(VITO!) - 16k - wifes (OC-17k)
'01 E320 Wagon - 159k - mine (OC-160,000)
'01 E320 - 179k - dad's (OC-182,500)
'07 E350 Wagon - 133k - dad's (OC-132,500)
'01 SL500 - 52k - dad's (OC-52,000)
'16 E400 4matic Sedan - 70k - Brothers (OC-72,000)
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  #8  
Old 09-21-2009, 08:47 PM
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If you're brave and have two helpers you can unhook the return line, start the car, and keep pouring to keep the pump filled. Be warned... this makes a mess :crazy:

-Jason
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2013 Fiat 500E. 20,000 miles, 80 miles at a time.
2012 Passat TDI. 95,000 miles. More space, power, and fuel economy than the Benz
2004 Touareg V10 TDI. 150,000 miles. One of 450.
1999 Jetta TDI. 310,000 miles.
1992 Jetta ECOdiesel. 156,000 miles. 1 of 48. Sold.
1991 Jetta ECOdiesel. 430,000 miles. 1 of 700. Sold to VeeDubTDI, totaled in front of our house
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  #9  
Old 09-22-2009, 07:09 AM
LarryBible
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OP, don't get all worked up about it. As long as there remains fluid in the reservoir and it is not overflowing you're fine. Nothing to get your nickers in a twist over.


Flushing the P/S system properly is a very simple and quick job and is NOT messy if you do it correctly. I have written the proper procedure on this forum at least a couple of dozen times, so a quick search should pull it up straight away. If you have a drain pan to slide under the car and P/S fluid at hand it can be accomplished in fifteen minutes, a half hour at most.

Simply sucking the fluid out of the reservoir and pouring in fresh accomplishes very little more than nothing and is just a waste of time.
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  #10  
Old 09-22-2009, 04:24 PM
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I have the procedure at my fingertips.

Flush Power Steering Fluid Exchange

You'll need a helper. The steps are rather simple.

1. Lift front tires off the ground.
2. Disconnect the ps return line at reservoir, drain ps reservoir.
3. Plug open connection at the reservoir.
4. Secure the return line to a generously-sized container (at least one gallon). If needed, add a length of hose.
5. Fill reservoir with new fluid.
6. Line up your bottles of new fluid for quick pouring.
Here comes the fun part...
7. Have helper turn car on, and immediately have him go through full range of steering motion (left and right) and shut off car, all the while you are trying to keep the reservoir filled. Flush about two quarts from the bottles.
8. Button everything back up.
9. Clean up mess.
10. Top off fluid.

The front tires must be off the ground so the system is unloaded, otherwise a lot of fluid is forcefully pumped out. The return line must be secured to prevent a big mess. Keep at least a gallon of ps fluid on hand. The helper must know what they are doing.
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  #11  
Old 09-22-2009, 05:11 PM
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filter

One more thing ,,, Change the filter when flushing the pump.

Ben

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