Tonight for the first time I had to use the front windshield defroster on my new MDX and was appalled about how poorly it performed.
Outside vent was open and I tried with the AC on and off, increased/decreased the temperature and almost nothing. After about 15 minutes it started a mild defrosting of the top portion of the windshield. The bottom third was never removed.
I am puzzled because on my 2013 MDX the defrosting was almost instantaneous.
Is this a common problem with 2019 models or is it just mine?

 

what temp do you have it set at?

 

Started at 67, 70 and 72.
Outside temperature was about 74 very humid.

 

On my MDX Adv, there is a heated windshield button located below the driver's air vent. It might be only designed for near freezing temps? It could work with the A/C to help de-fog faster on humid days until the cabin air is dry enough?