No lock!
I tow a 2014 wrangler 4 door Sahara, trail rated. The instructions for 4 down towing require negative cable to be disconnected and key in acc to prevent steering column lock. I did it this way for a year. I have a charge line from the rv so even if battery disconnected you still get power on the key buzzer, dome lights etc. It turns out that this jeep does not show on the as delivered equipment list a steering column lock. In fact the column does not lock so I don't need to be in acc position. With the charge line I don't have to disconnect the negative cable either. Now I just follow the procedure to put the transfer case in neutral, transmission in park. Now I turn the key completely off, take it out and lock the doors. It tows great, easier to set up and more secure. Point is check your wrangler for a steering lock, it may not have one.
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