Jeep 2011 Grand Cherokee Owner's Manual page 37

THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 35
3. Repeat steps 1 and 2 for the opposite rear door.
2
Child-Protection Door Lock Function
Child-Protection Door Lock Location
WARNING!
Avoid trapping anyone in a vehicle in a collision.
Remember that the rear doors can only be opened
from the outside when the Child-Protection locks are
engaged (locked).