Lincoln 1997 Town Car Owner's Manual page 174

A shutoff switch is located in the trunk on the right
hand vertical trim panel. If this switch is in the
OFF position, the automatic leveling system will not
operate. The switch should be OFF whenever
hoisting, towing or jacking up the vehicle. "CHECK
AIR SUSPENSION" will appear in the message
center when the ignition switch is in the ON
position, and either the shutoff switch is in the OFF
position, or a system fault has been detected.
Normal vehicle operation does not require any
action by the driver.
The air suspension switch — located in the
trunk on the right-hand vertical trim panel
171