how are you hearing the rear bags click if you said the car has been converted to coils all the way around??? the springs cant click!!! just shut the switch off in the trunk, or, take the passenger side front tire off, pull the plastic liner out of the wheel well, and reach in to the compressor and unplug it, i cant see how the compressor would still come on unless all 3 of your height sensors are still hooked up, but even then, if they were, and the compressor kicks on but sense's the car isnt airing up, you would get a fault message on the center screen.