This is copied and pasted from another post I replied to. Towed our 2014 over 10K miles this way.
You won't find this in the manual, but I can tell you how to do it without draining the battery or having a charge line. It's one of the easiest vehicles to tow, I have towed our '14 Explorer thousands of miles. First, the steering does not have an interlock...go ahead and try it. Second, leave the key out of the ignition....I actually carry mine in the RV. To put in neutral, take out the tray lining the junk holder in the center console just in front of the shifter. Once the tray is out you'll see a little plastic door about 2"x3". Open the door by releasing the small catch. Reach inside with your finger and in front of the shift mechanism you'll find a small "button", use your finger nail and pull the button out and you can then shift the lever into neutral. Easy Peasy. The release is there for tech's and tow truck people to release the shifter without a key or the battery is dead etc. Because you're not turning on the key, you're not running the battery down. Still follow the 65mph and 6 hour limit. Just start it every 6 hours -max to refill the tailshaft trans fluid reservoir as the manual states.
I also used diodes and hooked up the rear lights to a 4-wire plug attached to our Blue Ox baseplate. Good Luck !
1999 American Dream 40DVS
Spartan Chassis, Cummins ISC 330