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ccu

  1. J

    w203 Climate Control no A/C can't find errors

    Hi - This is my first post. I just bought a 2004 Mercedes c230 - with the manual climate control system. The A/C won't blow cold and I need help getting the error codes, and resetting the system. I have tried: REST + Defrost (buttons, holding down) this only produces two digit number on...
  2. S

    CCU bulbs not working W124

    My 1986 W124 has the vertical CCU buttons - 3 of them, and the lights don't work on them. Are the bulbs replaceable? If so how do I do it?
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