2008 R56 something is drawing down my battery!
Car goes to sleep in about 15 seconds(as it should), all interior lights go out etc.
If you pull the neg side of the battery something is using 10 volts of draw.
When you put the neg side back onto the battery it is a big spark!
(lot of draw)
We removed the power supply to the fueses under the hood and there is no spark there so whatever it is appears to being drawn from the fuses at the passenger footwell.
I assume all the computers to the car plug in at this footwell fuse box, i was not able to unplug the 5 or so of those.
I removed each fuse one at a time and watched the draw and nothing changed. All fuses are good.
We also removed the power supply going to the alternator and its not that.
Only codes are from a tpms issue and i wouldnt think thats it.