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Jammed in gear

Discussion in 'Engine, Drivetrain, Fuel and Exhaust' started by swamprat, Oct 25, 2012.

  1. swamprat

    swamprat Member

    Messages:
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    Joined:
    Jan 11, 2010
    Location:
    welsh/english border
    Your Mercedes:
    1966 308D motorhome, w210 e240
    I have 52 w210 240 which has recently occasionally started to lock itself into gear after overrunning down hill. You feel a hefty thump as the box changes down and afterwards the gear is locked in and even using manual shift does nothing. The only way to unlock the box is to switch engine off and restart which clears it.
    Less than 500 miles ago I changed gearbox oil and filter hoping this would sort it
    Local garage suggest new box of electronics in box at cost of £1500-ouch!
    Any ideas please
     
  2. mattkh

    mattkh Senior Member

    Messages:
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    Joined:
    Aug 2, 2006
    Location:
    England
    Your Mercedes:
    W168 1999 1.6
    Hi
    Did you check the level at 85 degrees.
     
  3. brandwooddixon

    brandwooddixon Senior Member

    Messages:
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    Joined:
    Jul 31, 2006
    Location:
    Wolverhampton
    Your Mercedes:
    CL500 Bluefficency 2012
    Sounds like it's dropping into Limp mode.
    This will give you second and reverse.
    It could be an electroplate problem, but a STAR diagnostic would tell you what's wrong.
    Where abouts are you? Perhaps someone can recommend a good independent that you could use.
     
  4. malcolm210

    malcolm210 Senior Member

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    Joined:
    Aug 21, 2005
    As already said typical gearbox electrical plate symptoms mine did the same. Electric plate from MB and oil and filter change about £450 all in.
     
  5. television

    television Always remembered RIP

    Messages:
    164,074
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    Joined:
    Mar 14, 2005
    Location:
    Daventry
    Your Mercedes:
    2002 SL500, 216 CL500, all fully loaded
    MB have this fault listed, and my 129 would do that, the cure and worth trying is to clean the ECU connector plug on the box,,, the end CAN connections carry no current and they can lose contact, just try a good squirt of non drying switch clean from Maplins. This has fixed 3 cars on here so far but no all, and easy to try.
     
  6. OP
    swamprat

    swamprat Member

    Messages:
    18
    Likes Received:
    0
    Joined:
    Jan 11, 2010
    Location:
    welsh/english border
    Your Mercedes:
    1966 308D motorhome, w210 e240
    Thanks all, for the comments and suggestions
    I will try the switch clean first and see how it does
     

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