First time this has happened, 21k miles.
1. Backing out of my driveway, I stopped, then put the car in drive. I hear a loud thunk from under the car when I gave it some gas.
2. Between 3200RPM and 4000RPM, there was a whining noise from the front of the car. Sounded like a tea kettle going off. Got louder as the RPMs neared 4000. This was in CVT mode. The blue thermometer light already turned off, so the engine was warmed up. I put the car in manual mode to try and replicate this and I could not. I put it back in CVT mode and could not replicate this. I made a few stops and still could not replicate it.