W204 paddle shifting from d to d1 everytime

Discussion in 'Engine' started by bain, Jun 15, 2017.

  1. bain

    bain New Member

    Messages:
    2
    Joined:
    Jun 15, 2017
    Car:
    c250 sport
    Hi all,

    Apologies if im posting in wrong area as this is my first time posting.

    Have a w204 c class 250 cdi sport 2009.
    Everything to my knowledge is fine. Had car on general diagnostic computer (snap-on but I know its not as good as STAR) a few times never with any issue but any time i ever try to downshift either using paddles or the gear stick the car jumps from d straingt to d1 even at high revs.

    I have only done this once or twice as I know the harm I could do. But the car shifts up through all gears fine. Gearbox has been serviced regularly including transmission.

    Short question - am i doing something wrong? Most likely me but I just dont know? Or is the car acting as it should and I am driving it wrong or does it sound like there is an issue here

    Many thanks for any help as I just cannot find anything similar to my issue on web
     
  2. Trickythemerc

    Trickythemerc MB Enthusiast

    Messages:
    1,076
    Joined:
    Feb 1, 2015
    Location:
    South Manchester
    Car:
    CLK 220 CDI Sport 2009
    It should not be shifting from D to 1st in one leap. The box will have over speed protection to prevent this happening, clearly this is not working. You need to get it on Star to get the gearbox live data looked at, it may be as simple as a lock out inhibitor not working. Either way it needs sorting before you blow it up.
     
  3. OP
    OP
    bain

    bain New Member

    Messages:
    2
    Joined:
    Jun 15, 2017
    Car:
    c250 sport
    OK thanks for the info Trickythemerc.

    Sounds like this could end up being a bit of a nightmare.
    Looks like its off to the dealer for the STAR diagnostics:doh:
     

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