2007 Mondeo Titanium X Sony Head Unit Fault

[Oldbeforemytime]

Evening all,

Hoping you can shed some light on an issue I'm having with my car.

The head unit is not powering on, the 6 CD changer in it will eject disks but nothing else.

The Ford ConversePlus still knows there's something attached to it and keeps throwing a phone initialisation message up every few minutes.

Anybody had this issue before or is it gonna need replacing?

[Oldbeforemytime]

Now the battery is flat as anything for a second time. No lights left on, nothing left on. Car left for less than 24 hours and had no power at all, not even wanting to jump start.

Anything you guys have would be greatly appreciated.