2017 CMax SE Energi new buyer questions

[michaelaland]

I just purchased a 2017 CMax Hybrid Energi SE and I have a few issues I thought I could throw out here to see if anyone has any solutions.

1- there is a faint humming type noise coming from the dashboard, I can hear it when car is idling and then when I turn car off, it goes on for 5 minutes or so. Any ideas? Possibly the computer shutting down? 

2- panoramic roof slide is broken, wont close, i imagine I have to remove the headliner to fix and its probably the motor or track?

3- can you leave the car plugged in all night and not worry about over heating or charging? Does it have a shutdown feature?

Thanks folks...

[justaguest]

1. I have no idea, sometimes I hear it too. Didn't really care, doesn't sound like an issue. 

2. Yes, I've heard this before. Have to disassemble the whole roof to fix it.

3. You can keep it on the charger as long as you want, doesn't charge more than it can.