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  1. Les Sanders says:

    Hi thanks for your video. where is the air con pump control relay please?

    1. Micheal Shawn says:

      There is no air con pump control relay on a 2000 Mercedes E320. The compressor is powered directly from the air conditioning control panel in the dash. If the compressor is not working, the common issues are low refrigerant or a faulty evaporator temperature sensor.
      I hope this help!