okay then dont forget that both remaining doors have two latches each. The rear door panel you would have to take it off the get access to the sensors. You might want to unplug it and the plug it back in you should be able to hear the ding. If not the the sensor contacts (two small metal blades)may be dirty. A handy Q-tip would work here. I am not sure how to get into the sliding door panels. I sprayed some gun oil on the sliding doors latches. Here is a website to get access to the door panels if you ever needed it:
http://www.carstereohelp.com/stereo...dstarFDrSpk.htm But, again spray the latches and work them with a screwdriver to make sure they fall all the way back and lock. Then pull the handle to release it. Hope this helps prevents you fomr going to the dealer to replace the sensors.