2003 a4 quattro 1.8t
when i turn the car off theres a noise that sounds like the cd player shuffling through the 6 disc cd changer. got a new battery a month ago and its dead already. i removed the radio fuse and the sound persists. bought the car 6 months ago and its been doing it ever since but not draining the battery, the previous owner said the ABS module is broken, anyone have an idea of what this sound is?