defog

So before I picked up my used Genesis, the dealer "kindly" replaced the windshield with a new, aftermarket one. The automatic wiper sensor didn't really work, so I figured it was due to the black marks covering the sensor's lens. When I took the rain sensor off, though, I heard something...

Does anybody have an estimate of time it takes to start seeing side mirrors defrost/defog? How long does it take to start defog of rear window - time till windowbegins to clear along lines? I just bought a 2012 Geness V6 sedan and it seems to take 15 to 20 minutes to defog rear windows and 6...