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Jerky gearbox - cause?

Discussion in 'F30, F34' started by mvaght87, Dec 31, 2018.

  1. mvaght87

    mvaght87 Club Guest

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    Model: 318i
    YOM: 2017
    Trim: Luxury

    The gearbox is very jerky/shudders at low speeds in Comfort mode, particularly around 80km/h at 1,500 rpm. Very troubling feeling from such a premium product!

    Problem goes away if gearbox is put into Sports gearbox (S) mode, or the car is put into Sport mode.

    SC says gearbox is "maintenance free" -- I call horse crap. Looking around the internet, it either needs to have the ATF flushed and replace, or it's a mechanical torque converter issue.

    Anyone had the same issue, and what was the solution?
     
  2. gendong

    gendong Moderator
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    Ur car is still considered new bro. Do send it back to the SC to sort things out.
     
  3. mvaght87

    mvaght87 Club Guest

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    Yup, I do intend to send it in when the nearest slot is available. I'm asking for my own knowledge, so I know going in what the SC should be doing.
     
  4. gendong

    gendong Moderator
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    With newer cars, most of the time its caused by the software. Prob goes away upon updating the software. Seldom its a mechanical issue.

    On ur own, u can clear the adaptation for the gearbox.

    1. Press start button once to turn on power (Do not start the engine)
    2. Press the accelerator down to the floor for at least 5 sec.
    3. Hit start button once to turn off power
    4. Remove foot from accelerator
    5. Wait for min. 2 minutes
    6. Start the engine and drive

    also, what i have noticed, if i wer to floor the accelerator from a standstill a couple of times, the gearbox jerkiness will go away too. I think the car need a bit of rempiting to make it happy.... hahaha....

    if problem still persist, SC is the way to go.
     
  5. mvaght87

    mvaght87 Club Guest

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    gendong, thanks for the tips. I was under the impression that this adaptive gearbox reset is only for E90?

    Btw, the car was bought from Premium Selection, so it is a used car.
     
  6. gendong

    gendong Moderator
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    Nope. it worked on my F10 too.

    oh Premium Selection. if a 2017, probably still hv the BSRI still intact.
     
  7. mvaght87

    mvaght87 Club Guest

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    Long story short, Ingress Damansara failed to correctly diagnose the problem TWICE. It fact, after the second time, they made it worse. The car's drivetrain failed literally the day after they said they "fixed" it aka took it in the workshop, let it sit aside for 4 days and then did nothing.

    Took it back to Wheelcorp and it turns out it's a faulty wiring harness -- apparently this is an issue with F30 318i's so FYI if you have one too. Causes the turbo to misbehave and result in jerkiness.

    p/s how do I file a complaint regarding Ingress' sh*tty service?
     
  8. gendong

    gendong Moderator
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    U may write to BMW Malaysia on your dissatisfaction with their dealers bro. There was a thread on this before.

    But glad Wheelcorp managed to sort your issues.
     
  9. leeky

    leeky New Member

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    My 328i msport have the similar problem recently, happen during low speed. From gear 1 change to gear 2.

    It happen while i release pedal before it change to gear 2. if i continue accerate without release padel it will feel fine. Is that normal?
     
  10. Roberto

    Roberto Club Guest

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    If you have transmissions issues which go away once you switch to sports mode, it is a software problem. Less likely to be a wiring harness - because both normal and sports modes use the same wiring harness, just shift points etc are commanded at different points.
     

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