Freelander2 flat battery problems.
I've just had this problem and after a lot of trips back to the Dealership and many call outs to the Landrover recovery service I found the problem and hope this helps.
The antenna that picks up the keyfob signal, its just inside the main dash facia, also picks up other signals on 2.4 Gz hence telling the BCU to start to awake a few items ready for the main engine ignition. My Freelander2 showed a too high battery drain in my drive but not at the Dealership, eventually a new receiver for the antenna was installed and the drain is now correct. If your battery is draining after a few days and upto a week or so, check the drain with a currant clamp, if you have the services of Landrover recovery, call them out as they are now aware of this happening on Freelander2's and they will verify if this is the problem>
I hope this is of help.