A clicking sound when you turn the key could mean your battery is dead. It could also indicate the starter is going out.
Probably a weak battery or the starter drive is stuck.
that's a sure sign of a dead battery.
check your voltage to the solenoid
Check your battery.
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Bad Battery: the clicking is the starter solenoid relay making contact but the battery is not putting out enough amps to turn the starter
If it does it when you turn the key and the engine does not turn over, it is a weak battery or possibly a loose connection on the cables.
It is a clicking sound
A car with a flat (dead) battery usually sounds dead - as in no sound. If you turn the key, trying to turn the engine on, chances are it will make no sound at all, or may make a sort of 'clicking' sound, or possibly a faint intermittent sound.
your engine wont turn over but it makes a clicking noise or if you turn the key to the notch before the one that turn on your car then turn on your radio and if it doesn't turn on you have a dead battery.
You usually can suspect that the starter is bad if you turn the ignition key and nothing happens. You hear a clicking sound but the engine does not turn over. The dash lights should come on.