Lincoln 1997 Town Car Owner's Manual page 35

The Trip Remaining distance is set by first selecting
the TRIP REMAIN indicator then pressing the
RESET button at which point the HUNDREDS
(100's) digit will be flashing. To set the 100's digit,
press the <SELECT button until the desired value is
reached then press SELECT> to go to the TENS
(10's) digit. Repeat the same procedure for the
ONES. Press the RESET button to set the value you
selected and return to the regular display.
Check Air Suspension Light
This light glows momentarily when the ignition is
turned to the ON position. With the ignition on
this light will remain on to indicate that the air
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suspension switch (located in the trunk on the right
side) is off or to indicate a possible system fault.
If the light is displayed while driving and the air
suspension switch is not turned off, safely pull off
the road as soon as possible. Turn the ignition
switch from ON to OFF and to ON again. If the
light continues to be displayed after flashing five (5)
times, turn the air suspension switch (located in the
trunk on the right side) off and take your vehicle to
a dealership for service as soon as possible.