Instrument cluster lights issue

Discussion in 'Electronics' started by CJK, Jul 29, 2017.

  1. CJK

    CJK New Member

    Jul 17, 2017
    Hi All,

    New here and first post (although not new to MBs), please be gentle.

    I'm fitting LEDs lamps to the instrument cluster on my '99 CLK-230 W208. The original bulb behind the temperature display was blown so I thought I might as well do the lot while I was in there. All was going well (a few needed to be removed and turned through 180 degrees as I progressed because of the polarity) and then for some reason I lost all the lights in the centre of the dash - for the speedo, turn signals and central LCD display.

    I've read elsewhere that having the key in the ignition whilst doing this (I'm 99.9% sure that I didn't at any point) can cause a fault which needs to be reset by the dealer, does anyone know if that's the case, or have experience of a similar problem? A couple of the LEDs were pretty loose and I had to bend the terminals on some of them to get a good tight fit, is it possible that a poor connection might have caused a surge?

    I'm dearly hoping that someone can tell me this is a simple case of holding a button down to reset it!

    Fuses are all checked and ok by the way.

    Thanks in advance.

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