We hae a Ford Edge with the push button ignition. When setting up to pull place it in N step on the brake and push the button. Turn off everything inside, my Edge is a power hog, so I have a charge system to keep the battery charge going down the road.
I have the Roadmaster system because I like the added support of the bar and a the BlackHawk 2 All-Terrain 10,000lb Tow Bar. My Edge over the truck scale weighs right at 5050lbs with 2 inside so the 2011-2014 Explorer will weigh more, so pick wisely.
JR