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The high-pitched whine during acceleration...

Discussion in 'Model S: Driving Dynamics' started by gg_got_a_tesla, Jul 16, 2012.

  1. gg_got_a_tesla

    gg_got_a_tesla Model S: VIN P65513, Model 3 Res Holder

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    Heard the same whine yesterday (initially blamed on traction control) in the non-perf Silver car in Palo Alto as my host, Nick, punched it in a straight line. Matt, our co-pilot, confirmed the frequency bit below and that they are working on changing it.

    Thought I'll put together posts from the Get Amped threads about this for discussion here:

     
  2. AnOutsider

    AnOutsider S532 # XS27

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    As mentioned, I rather liked the sci-fi-esque whine and, while I may not end up missing it hardcore, it was welcome.
     
  3. gg_got_a_tesla

    gg_got_a_tesla Model S: VIN P65513, Model 3 Res Holder

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    AO, not sure if you heard what we might be talking about here. It's not the 'regular' whine of the motor when driving; at higher speeds, when still accelerating, a second distinctive 'hollow sound' (don't know how else to describe it), distinct from the regular whine, could be heard. Wasn't nice to hear really; felt like something was going to come off somewhere!
     
  4. AnOutsider

    AnOutsider S532 # XS27

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    Oh, then my bad. I was talking about the nice scifi-sounding whine
     
  5. doug

    doug Administrator / Head Moderator

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    #5 doug, Jul 16, 2012
    Last edited by a moderator: Mar 13, 2016
  6. FlasherZ

    FlasherZ Sig Model S + Sig Model X + Model 3 Resv

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    To me it sounded like a muted warning tone - it wasn't variable with acceleration - it was fixed frequency and quiet. Sounded like it came from either beneath the 17" panel or beneath my seat. For me, it happened when I felt the traction control kick in, so I was wondering whether that was the cause.
     
  7. gg_got_a_tesla

    gg_got_a_tesla Model S: VIN P65513, Model 3 Res Holder

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  8. TEG

    TEG TMC Moderator

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    #8 TEG, Jul 16, 2012
    Last edited: Jul 16, 2012
    I hadn't noticed that in E's car in Fremont, but everyone in the Palo Alto car heard something and wondered about it.
    We had a theory that it might be the air suspension switching to lower ride height at a certain speed, but that could be wrong.
    It seemed to happen consistently when doing quick 0-60 acceleration runs, but never when just 'cruising'.
    Maybe, as mentioned, it is related to traction control?
    It was defiantly coming from the back of the vehicle down by the power-train. Also it was brief and not super loud, just noticeable as an "unusual noise."
    It sounded to me like it built up in frequency then suddenly would be done... "zzzssshoooweeeep".
    It sounded more mechanical than electrical to me, but I could be wrong. It almost sounded like a little "servo motor" or pump came on to adjust something.

    Reminded me a bit of some of the noises you hear in a jet plane when they are adjusting flaps...
     
  9. doug

    doug Administrator / Head Moderator

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    I was in the back seat and to me it sounded like it was coming from behind.
     
  10. MikeK

    MikeK R#129, TSLA shareholder

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    Our co-pilot in Palo Alto said they call it the "deflating balloon sound", which totally fit the next time Erik floored it. I was sitting in the back, and it was very definitely coming from the rear of the car.
     
  11. gg_got_a_tesla

    gg_got_a_tesla Model S: VIN P65513, Model 3 Res Holder

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    TEG, yes, I didn't hear it either while driving a non-perf car in Fremont but, everyone in the cabin heard it in a non-perf car in Palo Alto. It did sound like it was coming from the rear.
     
  12. CroDriver

    CroDriver Member

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    #12 CroDriver, Jul 16, 2012
    Last edited by a moderator: Mar 13, 2016
    We had a very similar noise coming from a high-current contractor under hard acceleration. It was a one-time problem with a contactor probably messed-up during production. If this is noticeable in only one car, it could be the same issue.

    However, the vibrating connector can also be the cause, we see "dancing cables" all the time during high-current bench-tests.
     
  13. brianman

    brianman Burrito Founder

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    I still can't hear it, in either video. :( Perhaps an audiophile on the forum can isolate it and raise the volume.
     
  14. TEG

    TEG TMC Moderator

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  15. brianman

    brianman Burrito Founder

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    All I hear is tire rumble. I don't hear a high-pitch other than the engine. Maybe there's some frequencies that I don't pick up these days. :(

    Thanks for trying though, TEG.
     
  16. TEG

    TEG TMC Moderator

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    Oh well, I hear "whirrrrrrrrrrrfff". Yes, a bit like a balloon letting out air through a kazoo... :redface:
     
  17. strider

    strider Active Member

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    I heard it in the video but did not hear it on my drive yesterday (Black/Pano/Perf) in PA. That was a weird sound. Doug, which car were you in?
     
  18. smorgasbord

    smorgasbord Active Member

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    I'm not Doug, but I drove the same car you did and we-all heard the noise very clearly and repeatedly.

    Maybe you weren't putting the pedal onto the floor?
     
  19. TEG

    TEG TMC Moderator

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  20. Vegi

    Vegi Member

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    I heard "both". I heard the tone that FlasherZ mention from the front dash (near the screen) and the noise from the back of the car. The tone from the front definitely seemed to be related to the traction control and the sound from the back related to hard acceleration. I heard the whine from the back several times when I accelerated hard but only heard the tone from the front when I felt the traction control really kick in.
     

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