2006 Dodge Ram 1500 Pickup Owner's Manual - Page 320

320 STARTING AND OPERATING NOTE: If steps 1 or 2 of either the Preferred or Alternate Procedure are not satisfied prior to attempting the shift or if they no longer are being met while the shift attempt is in process then the desired position indicator light will flash continuously while the original position indicator light is ON, until all requirements have been met. NOTE: The ignition key must be ON for a shift to take place and for the position indicator lights to be operable. If the key is not ON then the shift will not take place and no position indicator lights will be on or flashing. NOTE: If your are leaving your vehicle stored for longer than 21 days, refer to the section on "Vehicle Storage." Electronically Shifted Transfer Case Operating Information/Precautions (4 Position Switch)-If Equipped Transfer Case Switch This is an electric shift transfer case and is operated by the 4WD Control Switch (Transfer Case Switch), which is located on the instrument panel.