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Occasional rattle from back of car.

Discussion in 'Model S: Interior & Exterior' started by St Charles, Oct 5, 2016.

  1. St Charles

    St Charles Member

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    My Model S just rolled over 10K and I'm starting to look into the first annual maintenance.

    I noticed that, very occasionally, at low speeds, I will get a rattling that sounds very much like my rear wheels are throwing small bits of gravel at the wheel well. The problem is I am on clean pavement and not going nearly fast enough to actually sling rocks from my tires. I've looked through some sites that catalog common tesla sounds and I can't find anything that matches. I don't have anything in my trunk that is rolling around but even if I did, nothing is back that that could make that sound.

    I get nothing on hard accel/decel. I've noticed it on slow turns from a stop as well as coming up to a stop.

    P90DL | Air susp | UHFS | Prem seats | Pano | Cold weather |
     
  2. habanero69

    habanero69 I Dont Need Cialis. I Drive an EV.

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    Probably just the exhaust pipe/muffler heat shielding rattling. :p Just kidding. I hear something once in a while similar but haven't been able to pinpoint. I'd bring it up to the SC especially if it is easily reproducible...
     
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  3. St Charles

    St Charles Member

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    I can't reliably repro the issue yet. It seems to come and go which makes me think it's possibly some loose component or wire bundle.
     
  4. habanero69

    habanero69 I Dont Need Cialis. I Drive an EV.

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    Does it do it it only driving straight or only during turns? Do Tesla's have CV joints? Could it possibly be related to limited slip doing something? I personally would love to know how the motor shaft connects to the wheels. I know there is no transmission per se, but there must be some sort of gear reduction and/or CV function I would think.
     
  5. St Charles

    St Charles Member

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    I don't believe it is only on turns. I am about 99% sure that there are CV joints attaching the wheels to the drive units. I wonder if those are considered suspension or drivetrain?
     
  6. ceric930

    ceric930 Member

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    I noticed the same in my refreshed S RWD too. It's more obvious when I came to a stop at very low speed. It also seems only noticeable when my air suspension is set to very high. Maybe you can try very high setting and see if it's more likely to re-produce that way assuming you also have air suspension.

    I plan to talk to SC when they get to my punch list items from delivery.
     
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