Many of us travel and leave our vehicles in our garage for short periods of time. In my case I will be in Europe for four weeks this year and have very little information on what I should do with my 2011 RX450h for these four weeks. It will be in my garage and not be started or driven. Can some of the battery load electical systems be disabled manually so as to not drain the 12V battery? I do not want to unhook the 12V battery for this period since so many features will have to be reset when the battery is hooked back up. I am hoping there is a master switch that can be turned off that will not disrupt all the memory settings but will keep the battery from discharging. Any experience or suggestions?