Question about 2001 Mercedes-Benz C-Class

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Air con On start up the climate control clunks and clicks for about 20 secs before settling down. Plus there is a noise like a noisy tacho cable behind the dash that doesn't go away. Help please

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  • Strac May 27, 2008

    Thanks my friend.
    Sounds like a expensive job. any Idea how long this would likely to take.
    Could there be a short cut?




  • Strac May 28, 2008

    Thanks Bryce

    You are a star.

    Steve


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There is probably a worn arm on one of the flaps inside the heater box. The noise you hear will be one of the motors turning and wearing away one of the flaps, dash out job im afraid.

Posted on May 25, 2008

  • Bryce Cunningham May 27, 2008

    The problem with this fault is that there are five to eight motors and arm on the heater box so it could be one easily accessable or it could be the hardest one to get to. The two most easily accesssible are above the passenger kick panel. (Three screws). If not it is about a four hour job to remove the dash plus the cost of the actual motors and arms. If its not getting done at an MB dealer you will need to reset and personalise the motors, this is done by switching the ignition on and pressing the recirculation and rear window defrost buttons at the same time until they both start flashing, this will last 20 to 30 seconds.



    Hope everything goes okay



    regards

    Bryce

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