start small, could be a few things check battery terminals and wires. . then attempt to get a jump, if it starts. . you can check the alternator by disconnecting the negative battery cable while the car is running (if the car shuts off u need a alternator) if it stays running or if it wont start you might need a starter or a crank sensor which are both in the same location with the 3.5 or behind the harmonic balancer on other engines
solenoids are what clicks, yes it will click if the battery is low.
Bad starter solenoid? Loose or corroded battery terminals? Weak battery? Bad neutral switch?
Check for bad connections or fusable link
Bad battery, starting motor or both.
Dead battery or a bad connection to the battery.
If the battery is bad, you may only hear clicks. It could be the starter, but I would check the charge on the battery first.
If it does nothing you have a loose or corroded battery connection. If it clicks and will not start then the starter may be frozen and or defective. I would also try jump starting it to make sure the battery is good even though it shows full charge.
First guess; the battery is dead. Second; a break in the ignition switch wiring. NOTHING happens? No noise, no clicks, NOTHING? Check to see if the ceiling light comes on when you open the door.
Battery dead
dead battery
It could be a dead battery.
Battery is dead.