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W221 front dropped to ground whilst driving.

Discussion in 'Suspension, Steering & Brakes' started by mycos, Jan 13, 2018.

  1. mycos

    mycos Active Member

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    Your Mercedes:
    S320 CDI 2006. CLK350 sport 2006
    So my bad luck with the W221 hasn’t come to and end. Whilst driving the amber suspension malfunction warning light came on. Which then turned red warning ride height too low. Upon checking the front has dropped to the ground on both sides. Rear is fine and will raise and fall when using the ride height lift button. I can hear the compressor running so I don’t think the fault lies there. The car is an 06 with 40k miles apart from this and the intermitsnt heavy steering it is mint (promise)
     
  2. John Laidlaw

    John Laidlaw Senior Member

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    As you’ve said elsewhere it needs on Star, sounds like one or more bags has developed a fault or a compressor valve. Don’t drive it would be my advice now (which is probably what you’ve already decided)
    What a shame, really nice cars and if your is mint it’s worth the effort to keep going
     
  3. bembo449

    bembo449 Senior Member

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    id try looking to see if the height sensor has failed !? just repaired the same car where the rear did just that , height sensor bar had rotted off , id also check the boost hoses , the drivers side one in this case and one of the large 40amp fuses in the box under the ECU
     
  4. OP
    mycos

    mycos Active Member

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    Your Mercedes:
    S320 CDI 2006. CLK350 sport 2006
    I had all 4 wheels off it just a few days back to have winter wheels re balanced. I had a look at all sensors struts etc and it all looked good, no rust anywhere or splits on the gators etc. I was driving on a rough road at the time. I live in Eastern Europe and the back roads are v bad hence wanting the airmatic which when working gives a fantastic ride even on the really bad stuff. It would be good if I could run the compressor without the engine on to see if I can hear a leak. It dropped pretty quickly almost like an air line had come off.
     
  5. John Laidlaw

    John Laidlaw Senior Member

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    Is West Midlands in Eastern Europe? ;)
     
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  6. OP
    mycos

    mycos Active Member

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    I moved from Wolverhampton to Hungary about 6 months ago. Although parts of where I used to live have some similarities
     
  7. OP
    mycos

    mycos Active Member

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    Your Mercedes:
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    Photos last weekend, it’s too good to just patch up and move on. Will be collected by an Indi on Monday. Will let all know what went wrong.
     

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  8. John Laidlaw

    John Laidlaw Senior Member

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    Lovely car, love that colour nice to see something different
     
    mycos likes this.
  9. OP
    mycos

    mycos Active Member

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    Workshop owner came out this afternoon as he was free and performed a scan with Launch. Didn’t find any fault code with suspension so will undertake a physical inspection tomorrow. However it did flag a couple of other codes. Rear wheel speed sensor. I think that will be the culprit ref stiff steering. Also Output speed on gearbox. . Oh well I went into s class ownership with my eyes open. More to follow....
     

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  10. OP
    mycos

    mycos Active Member

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    Dropped front end diagnosed, Ride height sensor arm had failed. I’ve had all 4 changed on the grounds that if one failed the rest are likely to in the near future. Now just onto speed sensor. I’ll update on the other thread ref this problem.
     

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  11. bembo449

    bembo449 Senior Member

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    2 points to me lol , I hope its easier to change than the rear as that one is a complete b******d
     
  12. OP
    mycos

    mycos Active Member

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    Yes, good call bembo449. I’m quite happy it’s this fault as I want looking forward I replacing expensive items, struts etc. These arms are about £20 each from Mercedes in Hungary.
     
  13. bembo449

    bembo449 Senior Member

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    nice easy fix pal ! they are £21 from MB here
     

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