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Thread: When car is about to move 1st gear gives a kick

  1. #1
    Join Date
    Feb 2019
    Location
    Cyprus
    Posts
    2
    My Cars
    630i

    Unhappy When car is about to move 1st gear gives a kick

    Hi fellow bimmers,

    I own a 630i convertible 2009 - automatic transmission.

    I have been facing an issue for a while now and even though the car has been in and out of the authorised dealer the issue hasn't been resolved.

    The issue is the following: When stopped at traffic lights and I release the brake for the car to move forward, their is a hesitation (dead moment) and then it seems like the car kicks into gear and then moves forward. Occasionally the car may even move in reverse and then the gear kicks in.

    This is so annoying and so obvious that all passengers coming in my car ask me what is wrong.

    I have recently changed the gear box oil, changed the sparks and the injectors but no improvement.

    I sometimes also get a pic of my gear knob in the display but then disappears.

    Any idea on what I must do?
    Last edited by Pavlos25; 02-22-2019 at 04:04 AM.

  2. #2
    Join Date
    Feb 2010
    Location
    Hampshire UK
    Posts
    8,867
    My Cars
    99 840ci Sport Indv
    That sounds like a failure of the two seals within the gearbox. Fortunately both seals are easy to get to during the fluid and filter change. The only additional stage is that the Mechatronik unit is dropped from the valve body to get access. Both of these parts are shown in the routine shown below in steps 4 and 7:

    http://www.meeknet.co.uk/E64/mecha.pdf
    Timm..2007 E64 650i Individual Sport..1999 E31 840ci Individual Sport..ex owner of 2000 E38 740..1999 E38 740i V8 M62..1998 E38 735i V8..1993 E32 730i V8..1988 E28 518i


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