S-Class (W220) 1999-2006: S 320 CDI, S 320, S430, S 500, S 600

Power Steering

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Old Jul 10, 2007 | 01:50 PM
  #1  
jmiaebrown's Avatar
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2000 S430
Power Steering

I am experiencing a whining noise when I turn the wheel. I believe my power steering fluid may be low. I am not quite sure if I am looking at the correct area. Does the cap have a small dipstick? What I am looking at does. I don't see any fluid on it. What brand of power steering fluid should I use? Does it have to be Mercedes brand?

Thanks for you time.
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Old Jul 11, 2007 | 12:35 AM
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W220 M113K
yea thats the right one, mercedes has one they perfer
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Old Jul 11, 2007 | 01:42 AM
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Originally Posted by jmiaebrown
I am experiencing a whining noise when I turn the wheel. I believe my power steering fluid may be low. I am not quite sure if I am looking at the correct area. Does the cap have a small dipstick? What I am looking at does. I don't see any fluid on it. What brand of power steering fluid should I use? Does it have to be Mercedes brand?

Thanks for you time.
You should take it to the dealer. If it's low, you have a leak.
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Old Jul 11, 2007 | 11:32 AM
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From: Haleiwa on my mind
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Originally Posted by whoover
You should take it to the dealer. If it's low, you have a leak.
Correct......
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Old Jul 12, 2007 | 09:06 AM
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'00 S320 W220, '98 A160 W168/ sold in 2005 '86 260 E W124 '90 260E W124
There may be another reason also for that noise, if it does not go away by adding P/S fluid. It is a sound like "dry" plastic on plastic and comes from a bearing between the steering column and the top of the P/S gear. If this is it and you are out of warranty my guess $ 400 to fix it.
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Old Jul 18, 2007 | 01:24 AM
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Get it fix ASAP, this could cost you $$$ in the long run.

Big "H"
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Old Jul 18, 2007 | 12:19 PM
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Originally Posted by whoover
You should take it to the dealer. If it's low, you have a leak.
My dealer topped off the PS fluid and the sound was gone. The tech inspected the system and found no leak. No sound for over a year now. Nothing on the garage floor either.
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Old Jul 19, 2007 | 11:09 AM
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My car did the same thing. Had a noise and was low. Dealer checked and did not find a leak. They topped off the fluid and the problem went away. I think these cars must eat the fluid.
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