Just replaced the coolant reservoir tank (along with the water pump, thermo, pulleys and belts). I have a sensor at the bottom of the reservoir but it is/was not hooked up to any electrical connection? Did the connector come apart (and I just can't find the end). OR is this warning/monitor part of an upgraded package that I don't have?

Pretty basic, 04,3.0i

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2004, X5, 3.0, 202k+