Car keys open car door’s lock. Since these locks are on the exterior of the car, you have to think about; the effect that environmental changes and external force have on the lock. This means that the lock can have dirt and debris if it is not gets regularly cleaning. Your key is not only for your external car door locks; but it is also the tool that works with the ignition. For every key that exists, there is a lock or a mechanism that works with the key together.
If your car key does not work when it is inserted into the ignition; it does not necessarily mean that your car key is faulty or damaged. Sometimes, this is a symptom of a much larger issue, which might be damage to your car’s ignition.