You may try to press the button named DTC as long as you get the yellow warning it is off now in the display . 3-5 secs should be enough. But donīt press longer than 10 seconds (otherwise self destruction is started
), I dunno why but they write it in the manual (which is worth reading it folks...)
The x Drive is still active, but the electronic is not taking your power when the wheels go through or the car gets out of control, so please be carefull. But when there is lots of empty space and snow (or sand) you will enjoy it slidering around...
So long
Christian