Memory Set Switch
WARNING: This page is about a different car, the 2002 Chrysler Town & Country. However, it is still accessible from the selected car via links, so may be relevant.
The memory switch has 3 momentary switch buttons labeled Set, 1 and 2. When the memory set switch is depressed, a resistance value is sent to the Body Control Module via hard wired connections. When the memory system is in "SET" mode a chime will be generated by the body control module.