Flashing sidelights, is this normal with LED types?

Discussion in 'Electronics' started by DSM10000, Sep 18, 2011.

  1. DSM10000

    DSM10000 MB Enthusiast

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    I have noticed that if I put the key into the ignition switch and do not turn it then after approximatley 15 seconds the dashboard lights and sidelights flicker. if I turn the key to any other position this does not happen.

    I am not sure if it is relevant but the sidelights are LED replacements( kindly supplied by a forum member) and are otherwise working as thye should
     
  2. markjay

    markjay MB Club Veteran

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    I just checked, and my C180K 2006 does not do that... all that happens if I plug-in the keyfob but don't turn it is that after a while the display on the instrument cluster goes out. No flickering lights and no drama... hope this helps.
     
  3. Gaz74

    Gaz74 Active Member

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    I get the same result as markjay and I too have LED sidelights (and no. plate lights) fitted and have had no issues whatsoever. Sorry if this isn't what you wanted to hear...
     
  4. OP
    OP
    DSM10000

    DSM10000 MB Enthusiast

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    Update:

    It only does it if it is daylight and the doors are closed!!
     
  5. markjay

    markjay MB Club Veteran

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    Well, that's how I tried it on mine, so it still shouldn't be happening?
     
  6. OP
    OP
    DSM10000

    DSM10000 MB Enthusiast

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    I suppose the next step is to go back to the original non LED bulbs and see if it happens. Not sure why the circuit is energised with the key in the igniiton but not turned. The lights are currently turned to automatic.
     
  7. bolide

    bolide MB Enthusiast

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    My BMW does that. It's the bulb fail system checking for bad bulbs. My irritating LED sidelight bulbs flicker but the incandescent bulbs don't react quickly enough for it to be visible

    Nick Froome
    the independent Mercedes Estate specialists
     
  8. OP
    OP
    DSM10000

    DSM10000 MB Enthusiast

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    Thank you, I had just come to the conclusion that it was probably the bulb checking system.
     
  9. markjay

    markjay MB Club Veteran

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    OK, if it only affects the car when the key is in the ignition and not turned... why not just live with it? Can't be that bad...
     
  10. OP
    OP
    DSM10000

    DSM10000 MB Enthusiast

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    I had intended to do just that, I merely wished to know if anyone thought it may be indicative of a fault elsewhere.
     
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