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Vibration at 3-4 mph at the end of regenerative braking

Discussion in 'Model S: Driving Dynamics' started by Tuan, Aug 20, 2015.

  1. Tuan

    Tuan Member

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    #1 Tuan, Aug 20, 2015
    Last edited: Aug 20, 2015
    I was able to repeat this vibration at least 10 consecutive tests yesterday to make sure what I observed was a real. I had the radio turned off so I could hear the vibration as well as feel it. The regenerative braking setting was on "Standard." I have not tested it on "Low." During the test, I did not apply the brake in order to feel the vibration. I also turned off "Lane departure" to ruled it out. This vibration is much more subtle than the "Lane departure" vibration, which can be felt during highway speed. It seems to occur right at the end of regenerative braking during the meter transition from green to orange. It seems to be coming from the front of the car.

    I have not contacted service yet.

    My hypothesis: Vibration damper of front motor is seated improperly.

    85D coil - March 2015 with 12k miles
     
  2. MarcG

    MarcG Active Member

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    Did you recently upgrade to 2.5.36?
     
  3. Max*

    Max* Autopilot != Autonomous

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    Yep. I was in for service today (not related to this), and brought this up. They're aware of it. They send it off to engineering. Likely a bug from the latest firmware.

    It happens exactly at 4mph, repeatable, only using regen. It seems to be coming from the back.


    This is what my invoice said "Test drove vehicle, verified concern, This is a known issue and a solution is coming soon."

    - - - Updated - - -

    Here's someone else who has it: http://www.teslamotorsclub.com/showthread.php/44971-Firmware-6-2/page183?p=1118191&viewfull=1#post1118191
     
  4. richardl007

    richardl007 Member

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    #4 richardl007, Aug 20, 2015
    Last edited: Aug 20, 2015
    Since 2.5.36 I am getting the same thing. 85D
     
  5. Top

    Top Member

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    Same here since 2.5.36 on 70D
     
  6. WattUpDE

    WattUpDE New Member

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    Me too on 70D
     
  7. Buzzz

    Buzzz Member

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    Just noticed the same thing on my 70D on 2.5.36 coming back from work.
     
  8. Sosius

    Sosius a.k.a. Uptown Frunk

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    Same thing with my 70D. I have Creep Mode on, and it makes a low vibration/shuttering around 5 mph. Since it's a known issue, I'll wait and see if they come up with a solution.
     
  9. Max*

    Max* Autopilot != Autonomous

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    FTR I have creep mode off, so it's not related to creep mode.
     
  10. mspohr

    mspohr Active Member

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    So nice to have a car which is simple mechanically and all of the complexity it built into the software which is updated regularly. I haven't noticed this problem (I am probably less "sensitive" than others) but nice to know that it will be addressed.
     
  11. Tuan

    Tuan Member

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    I do have 2.5.36. You're right Max. My creep mode was off when that happened, so it doesn't seem to be related.
     
  12. travwill

    travwill Member

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    I have this I think. Is it at really lows speeds at the end of a stop really just creeping along (not actually with creep on though)? It is a low rumble for me that is very brief and has happened more lately.
     
  13. ACVolt

    ACVolt Member

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    Low Speed Shuddering

    Shortly after .21 was installed on my 85D I noticed when going slowly that it would start shuddering as the speed dropped from 4MPH to 3MPH. It feels like it is coming from the back. Turning on range mode seems to prevent the shudder. To recreate the issue I had to:
    • Get the car to something greater than 4MPH, say 5MPH and fully release the accelerator pedal.
    • If going uphill or if the break is pressed the problem doesn't present as the speed goes down too quickly.
    • Slight downgrades make the shudder more noticeable

    The issue continues even after the update to .36. Has anybody else experienced this?


    Thanks,
     
  14. Max*

    Max* Autopilot != Autonomous

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    There's another thread, I'm mobile or I'd link it.

    I was at Tesla aboutt something else, they are aware of this
     
  15. !S4

    !S4 Member

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    I've noticed this too on my 70D. It's especially noticeable in downgrades when I'm coasting with no accelerator input.
     
  16. Max*

    Max* Autopilot != Autonomous

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  17. !S4

    !S4 Member

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    Same, especially while coasting on a slight downgrade.
     
  18. wk057

    wk057 Senior Tinkerer

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    Sounds like the issue I had... right before my P85D shut down.

    My issue was due to a bug in a firmware update... that took something like a week to fix.
     
  19. ACVolt

    ACVolt Member

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    Didn't think to search for Vibration or shuttering. I searched for shuddering and shudder which resulted in some really old posts so I thought I would make a new thread.
     
  20. ACVolt

    ACVolt Member

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    I found with range mode enabled the shuddering was reduced/eliminated on my 85D. Can anybody else confirm?
     

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