Rebooting this old thread, I hope that's OK.
I'm having the dreaded power drain issues and was going to whip out the Bluetooth module, but I'll be blown if I can find it?
I've scrabbled around in the footwells, I've popped off the vents as shown above, but it's nowhere to be seen.
Any hints as to where it is on an petrol 04 2.4 folks?