I have a 2009 Jeep Liberty Limited 4 wheel drive with automatic trans. that I will be flat towing and want to know why the manual says to disconnect battery. I have had Cherokees, Grand Cherokees, and Wranglers and never had to disconnect battery. To my knowledge the steering wheel does not lock. The only thing I can think of is somehow the system goes on when the wheels turn and draws current from the battery. If that is true it seems all you have to do is run a battery wire from your harness to your car battery and that should do it. What am I missing here?