Sorta semi-highjack,
I was at a service center and they told me I needed rear brakes. I already knew this and have already purchased pads but I did not know this. They told me I had to replace the sensor at the same time - that the old sensor will not work after I change my pads. Is this true? I've already changed my front pads without changing the sensor. Do I need to put new sensors on the front as well?
And to mhajek18, it looks like you can get a new sensor at O'Reilly's:
List: Brake Pad Wear Sensor - 2005 Chrysler Crossfire | O'Reilly Auto Parts