Model X

Acceleration shudder

I'm starting to feel fairly frustrated that there still isn't a fix for the shudder the car does when accelerating quickly. Service center told me about 20% of model x cars have this issue and that they are working on a fix. Meanwhile it's been months and there still isn't a fix. Considering a spent my entire life savings and then some on a 120K car, I feel like it should be fixed within a certain amount of time or it should be replaced with a car that fits in the 80% group. (I love Tesla and this is my first negative thread. I still love my car, but I like to accelerate often and a car that shakes this much, or at all, while accelerating is not what I thought I was paying for. My shudder is bad!).

Your thoughts?
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Comments

  • edited September 2017
    Don't floor it from a full stop. Step on the accelerator and then ramp up after it gets going.
  • I bought the 90D over the 75D specifically because the 75D wasn't fun enough for me to floor it from a complete stop. The point is I like flooring it and do it often, and the shudder is a acknowledged issue that should be fixed right? Would this constitute a lemon?
  • edited September 2017
    I'm sure they will fix it. What I'm trying to do is to help you enjoy your car in the meantime. Another thing you can try is to set the suspension to low or even extremely low. Some have said that helps. Definitely don't set it to standard or above when you're out to play Fireball Roberts.

    Just trying to help.
  • Thank you for the help, and I do still enjoy it. The service center told me to try setting it to standard, because usually I have it set to low, but I'll try switching it up again. I can handle waiting, but considering it's already been months, I feel like if they don't have a fix within another few months, then they should replace the car with one that doesn't have the issue. (Wow I hate myself for complaining, that's Joe much I love Tesla! If it were a BMW I would be way more pissed. Hahaha!)
  • edited September 2017
    I had the shudder on my P90DL they replace both front shafts about 10 months ago which fixed the problem and Im still shudder free
  • edited September 2017
    By the way I floor it from a full stop on ludicrous often
  • Thanks Triggerplz! I'll ask them if they can try that on mine!
  • edited September 2017
  • They scheduled me for a test drive to show the technician on Monday and they do have the parts in stock incase they need to replace the front shafts. Gotta love Tesla service!
  • edited November -1
    You normally have your air suspension set to 'always low' and service suggested setting it to "low"instead? I would think that would make the shudder worse. That's what it does for me...

    Anyway, let us know the outcome...
  • No, service center suggested I set it to "standard" instead of "low", which was what I usually set it to. However, the issue is the same no matter what I set the suspension to.

    I will report back once I take the car in :)
  • edited November -1
    I agree, I have shudder daily upon accelerating when car is "cold", meaning I have just driven off. My car has been set to standard suspension for past 6 months since I read on the forum that setting it to low would degrade my tires faster. If I have been driving it for a while, and then accelerate, I have no shudder. It is scary. It feels like car is going to break down, and by "accelerating" I mean increasing from 15mph out of my residential street to 40mph onto a medium traffic street, not a freeway, when the shudder happens.
  • So I took @dmm1240's advice and set the suspension to low again, thank you! Shudder is improved, but not gone. Which is very odd because the original shudder started when the suspension was always on low. Hopefully it continues to be less drastic at the low setting. Still taking it in, because I'd highly prefer no shudder at all.
  • edited September 2017
    Suspension on low will wear tire tread faster. I'd rather have suspension on normal without any shudder. Will bring this to attention of SC upon my annual inspection coming up.
  • edited November -1
    Strange I never got the shudder in my low VIN P90DL with everything original. I know the Tesla god always takes care of me.

    PXChanel That's interesting. Could it be the tire pressure that did it? I can't think of anything else that could make the difference between a cold and warmed up car.
  • edited September 2017
    carlk,

    Good point. In the Summer there's nothing to warm up on a BEV except the tires.
  • edited September 2017
    I know of a 2016 Model X owner that had a similar issue, maybe same or different, but could not reproduce in any other Model X, replaced all shafts without improvement. He described it as more a rapid pulsation of power reduction as opposed to a mechanical issue.

    After extensive dialogue with Service, many of it apparently was aggravating for the customer and full of Tesla trying to "manage expectations", he eventually initiated a Lemon Law process.

    Now he doesn't say much about his 2017 Model X, same color and layout, but he does have AP2, although not happy about it.

    I guess you need to decide if you are willing to accept what may be a normal variant (20%) or could be a manufacturer defect.

    This is an example of the risk of not having access to vehicle service independent of the automaker.
  • edited September 2017
    I know of a 2016 Model X owner that had a similar issue, maybe same or different, but could not reproduce in any other Model X, replaced all shafts without improvement. He described it as more a rapid pulsation of power reduction as opposed to a mechanical issue.

    After extensive dialogue with Service, many of it apparently was aggravating for the customer and full of Tesla trying to "manage expectations", he eventually initiated a Lemon Law process.

    Now he doesn't say much about his 2017 Model X, same color and layout, but he does have AP2, although not happy about it.

    I guess you need to decide if you are willing to accept what may be a normal variant (20%) or could be a manufacturer defect.

    This is an example of the risk of not having access to vehicle service independent of the automaker.
  • Yes, if they can't fix it in a reasonable amount of time, I will be considering the lemon law route. Not sure how difficult that would be though...
  • edited November -1
    I am a huge fan of Tesla but I fear there will be no permanent solution. The talking points have changed from
    'Engineering is working on a solution' to 'Some shudder is normal for this car, but it does it less on lower suspension settings'. Sub-optimal to say the least. I hope I am proven wrong. They have had well over a year to determine root-cause and devise a permanent fix.

    Way more that 20-percent of 'X's have this shudder.....way more. I would venture an educated guess (I actually did a poll) that more than 80-percent have it to some degree. I would love to see anyone on this forum put their suspension on High or Very High, perform a maximum acceleration from a standing stop to 60, and report back no shudder.
  • edited September 2017
    Took mine into service and asked if the shudder was normal. Technician said to leave the suspension on low if you are going to launch it. Put it in Standard for longer tire life. The reason is that the angle of the shaft from the motor to the wheel changes with the suspension height setting. The drive shaft is level when the suspension is in low. In Standard it is no longer horizontal, but slightly angled upward toward the motor.
  • Took the car and test drove with a tech to show him the issue. Got the car back the same day. Here's what the description of work says, "Verified client's concern. Proactively replaced both front axle shafts and jack shaft to attempt to alleviate vibration under launch conditions. Please inform client that launching at high suspension settings will aggregate the problem on new shafts as well. Tesla is currently looking into a solution to this concern. Please inform the client that their vehicle is still safe to drive, and is functioning and performing as designed." So far no shudder, but I'm not going to try launching on anything besides the low setting.

    As always, I was blown away by the Tesla service! Santa Barbara service center has their act together. I will miss my signature red P90D loaner! Wish they had taken more time with my 90D! Hahaha

    Side note: The problem originally started at low suspension, when I switched to starndard it helped and slowly got worse on standard. When I switched back to low a couple days ago, the issue was dramatically reduced. It seems like switching the suspension helped in my case.
  • edited September 2017
    I have a MX 90D and had the same issue...accelartion shudder at around 30-40 mph during quick acceleration. Took it into Tesla, they replaced the drive shaft, now it hasnt done that since.
  • edited September 2017
    P90D, no L. Half shafts just replaced, no more shudder, for now. Started at 10k miles, by 20k it was present at Low suspension. Launches happened rarely. Original response from SC was that replacing half-shafts was a temp fix and that it was not dangerous so they asked me to wait. That song changed after “escalation” to “a third rev. part which should solve it”.
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