Steering prob 06 CLS - Mercedes-Benz Forum
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post #1 of 3 (permalink) Old 08-25-2018, 04:10 AM Thread Starter
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Date registered: Sep 2008
Vehicle: 2006 CLS 500
Location: Burlington Ontario
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Steering prob 06 CLS

Hi all havent had to post to the forum before as I was always able to find a solution here or at the dealer/mechanic's, until now! A few weeks ago steering of the CLS started getting very heavy and hard. Brought in to my euro friendly mechanic and he replaced the coupling and then upper and lower control arm on the passenger side. No improvement! I dont mind taking the car in for service as long as it comes out fixed! But Im not getting the feeling I am getting near a solution on this so I thought id look here in hopes someone could point me in the right direction and avoid what I fear will become a mechanical game of 'charades' where the diagnosis is done by chance instead of knowledge and experience. The power steering pump seems to be operational the reservoir is full. Any thoughts?
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post #2 of 3 (permalink) Old 08-26-2018, 05:57 AM
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Date registered: Apr 2008
Vehicle: W219 320CDI -07 W220 320CDI -01 W210 270CDI -01 EX: W211 320CDI -04
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usually if one wheel speed sensor starts paying up, it disables parametric steering and steering starts to feel heavy. Solenoid valve fault of parametric steering causes same behavior.

Of course it may always be 'classic' power steering pump/fluid issue, have you checked fluid level and condition (should be pretty clear, not black)?
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post #3 of 3 (permalink) Old 09-13-2018, 08:26 PM
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You need to scan the car. This is a very complex piece of machinery. Wouldn’t try taking out a screw without the right screwdriver. Same concept. Either go buy or have a dealer scan it. Anything else and you’re wasting time throwing money at it.
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