Best way to disconnect Battery / "Sleep Mode"



What is the best way to disconnect the battery and where in the car do I do this?
Also, I have heard about Sleep Mode or Standby Mode or Hibernation Mode, would this be adequit to "unpower" the car so I can remove the airbag? And how do you put the car in one of these modes?
I saw somewhere that you unlock the car or something, move the key far enough away so it's "out of range" of the car and wait 20-30 minutes and the car will "go to sleep"....
Any help would be greatly appreciated!
What is the best way to disconnect the battery and where in the car do I do this?
Also, I have heard about Sleep Mode or Standby Mode or Hibernation Mode, would this be adequit to "unpower" the car so I can remove the airbag? And how do you put the car in one of these modes?
I saw somewhere that you unlock the car or something, move the key far enough away so it's "out of range" of the car and wait 20-30 minutes and the car will "go to sleep"....
Any help would be greatly appreciated!



Where in the trunk area is the battery? Towards the back of the car or towards the front, on which side?



