I had to panic stop and noticed that the rear wheels skidded. Later, I noticed the check brake light messaage in the MID, sure enough the passenger-side tail light is out. Then the "auto" A/C mode stopped working. I could set the temperature absurdly low (outside 80F+) and the fan would not change speed.
To top it all off, I got the first chip in the paint after opening the door into a low cement fixture!
So it looks like a trip to the dealer for warranty service is in order, grrr...