Jeep 2012 Liberty - Manual (Page 14)

A WORD ABOUT YOUR KEYS
You can insert the double-sided keys into the locks with
either side up.
The authorized dealer that sold you your new vehicle has
the key code numbers for your vehicle locks. These
numbers can be used to order duplicate keys from your
authorized dealer. Ask your authorized dealer for these
numbers and keep them in a safe place.
Ignition Key Removal
Automatic Transmission
Place the shift lever in PARK. Turn the key to the ACC
position and then push the key and cylinder inward
slightly and rotate the key to the LOCK position. Then
remove the key.
Vehicle Key
12 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE