2000
Lincoln LS
V8

check the terminals for corrosion or a bad connection.

Check your starter.

Fuse, or starter.

Is the car turning over at all? If not, start by looking at the starter. Otherwise we will need more details to figure out the problem.

Hey, TARD!! Did you try putting the key in the ignition????? LMAO.

There are more things that have to be in good working conditions to start a car besides the battery, starter itself, computer, relays, wiring, good connections at the battery,ignition switch

Check the battery for corrosion
Examine the spark plugs for corrosion
Examine the spark wires for damage or arcing
Check to make sure the fuel pump is working
Make sure the car is in 'Park'

The trigger wire on the starter may be loose or could be a relay bad.

If u r still having car troubles e-mail me.
What l need to know is.
1-Is the check engine light on?
2-If the check engine is on, is it flashing?
3-Does the engine turn over?
4-Is there gas in the gas tank?
5- Are u using the right key to start the car?
6- Are using a new key to start the car.
7- Are u using a old key to start the car.
8- Is the cars anti-theft light on & is it flashing?
9-How many keys do have for this car?
10- Did u have any work done to the car? before the problem showed up?

If it cranks and does not start.check the fuel pump.

You could have a defective key. try taking the car to a dealer they will be able to diagnose properly and advise you of repairs needed.