Trouble with wipers in auto setting. First the wipers stopped coming on in the auto setting when it rained, wouldn't even work in auto setting. Noticed the grn light on dash isn't lit when I have the wiper in auto mode. Then one day they activated BUT it wasn't raining. So basically the wipers work and activate when it is dry out. The sensor had been changed but still have same issue. Any suggestions before I go back to dealer. FYI my windshield was replaced and calibration was done.