TMC is an independent, primarily volunteer organization that relies on ad revenue to cover its operating costs. Please consider whitelisting TMC on your ad blocker or making a Paypal contribution here: paypal.me/SupportTMC

SAS groans and creaks when raising/lowering

Discussion in 'Model X: Driving Dynamics' started by Stasla, Sep 24, 2016.

  1. Stasla

    Stasla Member

    Joined:
    Mar 30, 2016
    Messages:
    210
    Location:
    New York
    Anyone else notice their SAS make noise when raising or lowering when the car is stopped? Wondering if I should get this checked out by SC or if it's normal.
     
  2. Colby Boles

    Colby Boles Member

    Joined:
    Dec 29, 2015
    Messages:
    278
    Location:
    San Francisco, CA
    Are you talking about the compressor noise or something else? The compressor noise is "normal", although you should be on the lookout for it happening too frequently when the car is parked. My car had a leak in the air system and would give a little compressor "burp" every minute or so in order to maintain pressure. Now that it is fixed it is very rare that the compressor runs. I work 10 feet from my car so I have a pretty good idea what it does all day.
     
  3. Stasla

    Stasla Member

    Joined:
    Mar 30, 2016
    Messages:
    210
    Location:
    New York
    Doesn't sound like a compressor, more like a brake grinding type sound.
     
  4. hollyatl

    hollyatl Member

    Joined:
    Jan 19, 2016
    Messages:
    51
    Location:
    Atlanta, GA
    Mine makes noise too, as does my husband's 2.5 year old S. Guessing it is normal, though the sound can be a bit unsettling.
     
    • Informative x 1
  5. FarmerDave

    FarmerDave Member

    Joined:
    Sep 3, 2015
    Messages:
    338
    Location:
    Martinsburg, PA
    Do you have the car in park or have your foot on the brake when changing height? I think it is the sound of the brakes that you hear.
    Try changing the height while moving slowly. I never hear the sound under that condition.
     
  6. Stasla

    Stasla Member

    Joined:
    Mar 30, 2016
    Messages:
    210
    Location:
    New York
    It's harder to hear the noise while moving because of road noise. It's definitely not super loud, but when at a standstill with miminal surrounding noise it's quite noticeable.
     
  7. K-MTG

    K-MTG Sunshade Captain of TMC

    Joined:
    Oct 24, 2015
    Messages:
    2,383
    Location:
    Irvine, CA
    Mine is a compressor noise, when I slow down
     
  8. Pandamoanium

    Pandamoanium Member

    Joined:
    Jul 8, 2016
    Messages:
    121
    Location:
    Parker, CO
    To my knowledge this is normal. Not sure how it works but this is a sound I've al;ways heard with all of my other cars with an air suspension that can be changed. I think the clicking sound is the suspension getting to a, "checkpoint" where it may lock the position so if it were to fail, it can stay in that level.

    Sounds exactly the same as the other car manufactures and is actually less noticeable when compared to my previous RRS.
     
  9. hollyatl

    hollyatl Member

    Joined:
    Jan 19, 2016
    Messages:
    51
    Location:
    Atlanta, GA
    That must be it. When entering the rough gravel alleyway, I have the car in D and my foot on the brake when raising the suspension to High or Very High. Then, before entering my garage, I have my car in P when lowering the suspension back to Low or Very Low (trying to avoid anything hitting the garage door mechanisms inside the garage). I have not yet mastered the art of changing the suspension back and forth while navigating the narrow rough alley with side sensor alarms dinging constantly so therefore I stop before I do it. :)
     
  10. jeffro01

    jeffro01 Active Member

    Joined:
    Jan 30, 2013
    Messages:
    1,160
    Location:
    SF Bay Area
    Yeah if you happen to be in park or hill hold is enabled or your foot is on the break, the car will make some sounds while the suspension is raising or lowering as the the brakes "adjust" a bit during that process.

    Jeff
     
    • Informative x 1
    • Like x 1

Share This Page