Why is Your Car Key Not Functioning?

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Why is Your Car Key Not Functioning? The modern cars are mainly available with transponder keys. The transponder key means that the car is paired with the key in a more secured manner. There is a transmitter embedded with the key that corresponds to a receiver installed within the car. In order for the car to work in the ignition, the transmitter and the receiver have to exchange a series of signals that serve as a verification that the right key is in place. So, in order to have no issues during the starting of your engine due to the non-functioning of the car key, it is better to read about the possible reasons why your car key might not be functioning.

Damaged locks One of the most common reasons that people need new car keys is because they have actually damaged the stem of the key in a lock. In other words, the lock is probably not working properly and causes the key to break the moment turning pressure is applied. The car door locks work in conjunction with the keys which states that when you are regularly using the car key to physically unlock your car door, the internal mechanism of the lock will wear down with time. So, in order to avoid problems, it is needed to frequently maintain the locks with appropriate lubricants and keep them free of dirt and debris.

Damaged keys The keys are the physical and they also wear out over time. A key may stop working due to various reasons such as the key is bent or worn and mechanical issues with modern key fobs. Remember, they are little electronic gadgets and if you crush them, expose them to too much moisture or electrical impulses, they may cease to function. Dead batteries can actually even cause the electronic code to reset. You usually get some warning signs that this is about to occur, such as having to click a few times to open a door.

Using a duplicate key Duplicate keys are popular among drivers as it gives the peace of mind knowing that your chances of being stuck in a car lockout are much less, simply because you have spare keys that you can utilize. It also gives you the luxury of being able to share your car with members of your immediate family. However, many people do not realize that every consecutive car key duplicate that is carried out reduces the integrity of the original key. There might be the chance that you will find that your car key is not working, simply because you might be using a duplicate car key that does not function the same as your original key. Obtaining a duplicate car key is a much cheaper option that getting a new key cut to code, but it is not always the best option, nor is it the most secure.

Ignition cylinder problems The car key that is used to start the car may cease working if the cylinder it unlocks and turns is damaged. Just like the external locks on the car doors, the ignition is prone to wear and tear. If your key is fine when used to open the doors or trunk, yet fails to work with the ignition, it may be that there is a problem with the cylinder.


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. The mechanical components are prone to wear and tear, so it is common for things to break down such as the ignition cylinder.

Damage to the key fob The electronic car keys that come attached with a fob can also encounter problems. While crushing them, dropping them in water or exposing them to other risks may cause them to malfunction, there are other issues that might affect the key fob. Just consider the wiring inside of the tiny fobs can fray over time, and this can cause a failure in communication between the transponder in the fob and the receiver in the car. The receiver that is actually inside of the car may also be the reason for a function-less key.

Conclusion Car keys are an integral part of a car activities, so whenever your car key is not working, it can be a costly hassle. Taking the time to read through the points listed out above will help you properly diagnose the reason why your car key is not working.


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