I have a 2016 RDX. We got a new battery less than 2 months ago and started having a problem where the Check Charging System light comes on, then about 5-10 minutes later, the power steering starts to fail, and all sorts of warning lights come on. We got the alternator replaced, entire battery line replaced, and the HFL disconnected.
After having all of this done, the same things happened a few days later and this time, the car wouldn't drive (it would just rev), and it wouldn't come back on without waiting a while. And even when we waited a while, it would come back on with the same problems. We have poured so much money into this car. Please let me know if you have any experience with this, especially if it was fixed.

 

i'd check the drive belt and belt tensioner next