Dodge 2004 HB Durango - Manual (Page 104)

Interior Lights
Courtesy and dome lights are turned on when the front
doors are opened, when the dimmer control (rotating
wheel on the right side of the switch) is rotated to the
second upward detent position, or when the UNLOCK
button is pressed on the key fob. When a door is open
and the interior lights are on, rotating the dimmer control
104 UNDERSTANDING THE FEATURES OF YOUR VEHICLE