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.
A clicking sound when you try to start the car is a dead battery. It may be that the alternator is not charging it properly.
A bad starter
If your car makes a clicking sound when you try to start it, try to jump the battery. If that starts it, check the electrical system and if it was the battery, replace the battery. If jumping it does not fix it, have a mechanic look at it.
Jump start car and ensure alternator and battery are good.
You forgot to let your wife in
That could be the alternator or the battery. Try jump starting your car with another car's battery. If it still does not start, it is probably the alternator. If it starts, your battery is dead.
h/lamp & tns relay clicking when car is off & car will not start
The car won't start but it is clicking
Then your battery is still not charged. The clicking sound is the solenoid that has a little gear on it that engages with the ring gear of the engine to spin it. There is a certain amount of voltage needed to push that solenoid into the ring gear and your battery isn't putting out enough. You'll need a jump to get started and then need to consider the battery.
It's your car cooling down.....
AnswerIs the clicking sound from the engine? Try to check the oil.If this is happening when you try to start the car, it is most likely a weak battery or a bad starter. Oil would not have anything to do with this problem
Possible battery, starter or connection problem.