What Causes the Clicking Sound When Turning the Key but Failing to Start the Car?

[Shaun]

The common reasons for hearing a clicking sound when turning the key but failing to start the car are: 1. The clicking sound is the noise from the relay or starter working, indicating that the starter has responded but cannot turn the flywheel, resulting in failure to start. 2. Insufficient battery power. Forgetting to turn off the headlights when parking or connecting too many external devices can drain the battery. 3. Low voltage can also cause the car to fail to start with a clicking sound. The reason for low voltage is usually an old battery that has degraded over time, reducing its stored power. 4. The gear is not in the P position when starting. Starting the car in the wrong gear can prevent it from starting.