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Slower acceleration and vibration/loose parts? in front motor

Discussion in 'Model X' started by DrivingTheFuture, Nov 12, 2016.

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  1. DrivingTheFuture

    Joined:
    Oct 21, 2015
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    I noticed this only recently that under hard acceleration there is now a disconcerting noise and vibration feel that seems to be coming from front motor. It did happen to be on one of the first cold days of the season for us... Is it maybe limiting the torque, or should we take it in to service asap?
     
  2. gavine

    gavine Petrol Head turned EV Enthusiast

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    There's already lengthy discussions about this. We are calling it "shudder". It's a common issue but I don't know if there's a fix for it. Some had their axels replaced with mixed results.
     
  3. Vrso

    Vrso Member

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    At least in one case Tesla replaced front motor because of vibration but it did not help
     
  4. DrivingTheFuture

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    I thought I had read about it before but couldn't find the thread, so I started one. I'm glad im not the only one. It really takes away the enjoyment from the smooth quiet acceleration that I've enjoyed previously
     
  5. DrivingTheFuture

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    Also is it only an issue on Model X? Or has model S experienced it too?
     
  6. wanaxnow

    wanaxnow Member

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    Bellevue, WA
    I had the exact thing happen with our X. After 3 trips to the SC we finally solved it. The noise I was hearing was in the attached file. This was the most frustrating issue which literally kept our X at the SC for a full week. I insisted it get solved once and for all. They ended up needing to replace the half shaft out of the drive train on the passenger side. According to them, I wasn't the first to bring this to their attention.
     

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  7. Shipbldr200

    Shipbldr200 Member

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    Columbia, MD
    I have it as well.... My appointment to get it fixed is in late December. My Service Center rep seemed to have never heard of the issue.... I have both the noise and the shudder.
     
  8. Mjølner

    Mjølner Member

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    Midgard (Norway)
    Here is what they did with mine, and solved the problem.

    Corrections:
    Front Drive Unit General Diagnosis Test drove car, when accelerating you can clearly hear a knocking sound and vibrations from what seems to be front right side.
    Hub replacement did not make any difference.
    Found missing shear plate. Installed shear plate, most of the knocking noise are now not present anymore. Remain one big knock. Replacement of the front right halfshaft will be performed.
    Found movements in rear bushing on right hand side motor mount. Replaced motor mount. Works as designed now.

    Dissassembled right front motor mount, installed new type shear plate ( had no plate from before). Reassembled.
     
    • Informative x 1
  9. aesculus

    aesculus Still Trying to Figure this All Out

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    Somebody on the line has some 'splainin' to do.:eek:
     
    • Funny x 1
  10. DrivingTheFuture

    Joined:
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    Thank you all so much for input, will definitely be making a trip to service center. Did they provide a loaner while they did repairs?
     
  11. carlshome

    carlshome Member

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    Los Altos, CA
    After ten days in the Sunnyvale, CA, service center I got my MX back. Long list of repairs under warranty. Ok, my VIN is 0017XX so I'm not totally surprised. But when I went down the list I see that they replace BOTH front half shafts. Wow. I didn't have any vibration or other issues as described by others. They just replaced them. They also replaced the door latches, again I didn't have any issues. They invoice says replace door latches with updated part. So it appears they are just replacing these things as a matter of course without any complaints from me. Way to go Tesla.

    Regarding the length of time. I did bring it on Dec 26 so they were down people, plus then the New Years holiday. So I was Ok that it took so long.
     
    • Like x 2
  12. eHeyMan

    eHeyMan Member

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    I started having a front-end vibration or shudder occur after 9 mo's in my Model X under normal acceleration at 30-35 mph and at the standard height setting. Seems to be more pronounced when going up hill. I took it in to be serviced two weeks ago and they performed a suspension and powertrain inspection and verified all components are ok. Service said vibration under heavy acceleration in normal and higher settings is expected due to the increased angle of the front axles and recommend using the lower suspension levels to lessen the possibility of vibration. There is a problem with using lower suspension settings. I've had in the past issues with uneven rear inside tire wear using prolonged low suspension settings. I find Tesla Service's response unacceptable. Most of my city driving is at 30-35 while encountering hilly roads (in Seattle area). I will monitor the vibration and see if it gets worse. Perhaps on my next service visit I will insists something be done to correct the issue. I will mention the missing shear plate, half shafts, etc. More thoughts any one?
     
  13. DrivingTheFuture

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    They finally repaired ours after I showed it to the service rep in person and I do believe they ended up replacing some parts.
     
  14. Peteybabes

    Peteybabes redneck drivin' a tesla...

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    EXACTLY!!!!!!

    i have the same car as you to (non-ludicrous) and i'm SN#: 6868

    just had my car in to get the 2 front axles replaced on Wednesday!
     

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