FORD 2008 Crown Victoria - Manual (Page 208)

To help prevent the vehicle from moving when you change a tire,
be sure the parking brake is set, then block (in both directions)
the wheel that is diagonally opposite (other side and end of the
vehicle) to the tire being changed.
If the vehicle slips off the jack, you or someone else could be
seriously injured.
Do not attempt to change a tire on the side of the vehicle close
to moving traffic. Pull far enough off the road to avoid the
danger of being hit when operating the jack or changing the wheel.
1. Block the diagonally opposite
wheel.
2. Locate pry off notch (if
equipped) and remove the center
ornament from the aluminum wheel
with the tapered end of the wheel
nut wrench that came with your
vehicle. Insert and twist the handle,
then pry against the wheel.
3. If equipped with a full
wheelcover, remove the wheelcover
center ornament then loosen the five black plastic nuts which retain the
wheelcover using the lug wrench.
4. Loosen each wheel metal lug nut one-half turn counterclockwise but
do not remove them until the wheel is raised off the ground.
Before placing the jack under the vehicle, NOTE the jack location
markings:
2008 Crown Victoria (cro)
Owners Guide (post-2002-fmt)
USA (fus)
Roadside Emergencies
208