Lincoln 2001 LS Owner's Manual page 216

Maintenance and care
2. Remove the five pushpins that retain the passenger side portion of the
cowl screen. To release the pins, depress the center "button" of the pins
using a key or similar object. Note also that the cowl screen is retained
to the rubber hood hinge cover with Velcro. This must be released to
remove the cowl screen.
3. Remove the cowl cover.
4. Release the clips in order to remove the cabin air filter from the cabin
air filter housing. (Please note that releasing the clips might require a
slight downward force).
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