I have a 2015 S and a similar vintage EZPass (not the newer one that the Amazon cover ^^ fits apparently). Since I've had the impression the windshield blocks the signal, at least the area forward of the rear view mirror where these are normally put, I've always kept it in the car and held it out the window when going through tolls. Well, I went through NYC last week in the pouring rain, so the previous approach was no good. To my surprise, mounting the big ugly white thing in the top left corner of the windshield worked fine. Now I'll shift it behind the blackened area right of the mirror ^^.
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