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Why does my car have a clicking sound and wont start?

If your car is making a clicking sound and won't start, it could be due to a few common issues, such as a dead battery, a problem with the starter motor, or an issue with the electrical system. In this article, we'll explore the potential causes and provide guidance on how to troubleshoot and address the problem.


Potential Causes of a Clicking Sound and Failure to Start


There are several reasons why a car might make a clicking sound and fail to start. The most common causes include:



  • Dead or Weak Battery: A dead or weak battery is one of the most common reasons for a car not starting and making a clicking sound. The battery provides the necessary power to start the engine, and if it's not holding a charge, the starter won't have enough power to crank the engine.

  • Faulty Starter Motor: The starter motor is responsible for turning the engine over and starting the car. If the starter motor is failing or has an issue, it can cause a clicking sound and prevent the engine from starting.

  • Electrical System Problems: Issues with the car's electrical system, such as a problem with the alternator, wiring, or other electrical components, can also lead to a clicking sound and the car not starting.

  • Immobilizer or Security System Issues: Some cars have an immobilizer or security system that prevents the engine from starting if it doesn't recognize the key or key fob. If there's an issue with the immobilizer or security system, it can cause a clicking sound and prevent the car from starting.


It's important to note that the specific cause of the clicking sound and failure to start can vary depending on the make, model, and year of the vehicle, as well as the overall condition of the car.


Troubleshooting and Resolving the Issue


If your car is making a clicking sound and won't start, here are some steps you can take to troubleshoot and resolve the issue:



  1. Check the Battery: Start by checking the battery. Use a voltmeter to test the battery's voltage. If the voltage is low (below 12.6V), the battery may need to be recharged or replaced.

  2. Test the Starter Motor: If the battery is in good condition, the next step is to test the starter motor. You can do this by having someone try to start the car while you listen or tap the starter motor. If the starter motor is faulty, it will need to be replaced.

  3. Inspect the Electrical System: Check the wiring, connections, and other electrical components to ensure there are no issues. If you suspect an electrical problem, it's best to have a professional mechanic diagnose and repair the issue.

  4. Check the Immobilizer or Security System: If your car has an immobilizer or security system, make sure the key or key fob is working properly and that the system is not preventing the engine from starting.


If you're unable to resolve the issue yourself, it's recommended to have a professional mechanic inspect and diagnose the problem. They will have the necessary tools and expertise to identify the root cause and provide the appropriate repair solution.

Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.