Definitely go by the owners manual. There may be other steps to take. We have a 2005 Jeep Liberty that requires the transfer case to be in Neutral and the transmission to be in Park. Ignition has an Off position that allows power to 12 volt plug. Some Ford 4WD with the electronic switch for the transfer case cannot be towed 4 down. But with the actual manual lever they can. Each model is different.
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