We tow our 2010 Ford Edge with no problems. Start the car, make sure that everything is off (I always turn the headlights off, too - I don't leave them on the automatic position). Move the shift from Park to Reverse to Neutral to Low, then back to Neutral. All my research indicates that you should NEVER go from Reverse to Neutral. The Edge manual does not say that you should run the vehicle any length of time before towing, but the manual for our previous dinghy (Honda CRV) suggested running it 3 minutes in neutral, so I do that with the Edge as well. You turn the car off while in neutral (be CERTAIN that your parking brake is OFF), but only turn it one click (that will leave it in accessory 1 position) so that the steering wheel is free to move. Be sure all your windows are closed, as well. We have found that the Edge does great for 6 hours, but even though everything is OFF it killed the battery during one nightmare trip that ended up 9 hours.
Had we stopped and run the car a bit I think it would have been fine, but at the time that we stopped our windshield wipers on the coach were broken and it was pouring rain . . . we had a few other things on our mind.
The edge tows great and is a very comfortable vehicle to run around in when you reach your destination. It easily holds two sets of golf clubs, and lots of cargo.