Hi and thanks for using 2CarPros.com.
As far as the CD, it can cause this issue. Take a look through the link below. It discusses things that can cause the battery to drain. One of the items discusses is exactly what you are dealing with. Additionally, it explains how to check if that is the actual problem. If you want an easy way to check if it is the CD player, remove the fuse for it and see if the battery still goes dead.
Take a look at this link:
I hope this helps. Let me know if you have other questions,
Saturday, August 25th, 2018 AT 8:33 PM