Hi my GC 2013 did not automatically lock all doors once it reached 15 miles. Found this tweak for wrangler which worked on my ride.
1. Insert key and turn to ON mode (1 click only) & off mode simultaneously 5 times. Do not switch on the car. End the key at ON position
2. Quickly press the unlock button on driver's door twice.
Repeat steps to disengage auto lock.
I tried tweabto have doors locked when the gear is shifted to D and unlock when on P. Didn't work on my car.
This is not an Easter bunny but will help someone.
JG Cherokee 2013 V8 Limited Cherry Red.