Why Your Car Key Does Not Work and What to Do

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It is useful to remind you at first that if your key is broken in the lock, the following text will be of no use to you.

However, contact a locksmith who knows how to extract a broken and/or stuck key in a lock.

Let’s begin:

1. Damaged lock

If your car key does not work when you try to unlock your car, there is a possibility that the lock itself is damaged.
If you are driving a relatively new car, you are less likely to have this problem due to the presence of keyless entry systems.

On the other hand, if you have an older car model that requires unlocking with a physical key, you will experience this problem.

It is likely that your car key is not working due to a faulty or damaged lock.

Car locks work in tandem with the keys, which results in simultaneous wear of the lock and the key.

This is not the only way to use your lock. Since the locks are on the outside of your vehicle, you should not underestimate the impact of environmental factors on the condition of your locks. This means that your lock can become blocked by the accumulation of debris and dust. On the other hand, beware of collisions that can cause great external damage.

2. Damaged key

One of the main reasons for the malfunction of your key is the wear of your key. When we think of damaged keys, the image of a key split in four comes to mind.

It is an exaggerated perception that does not do justice to reality. However, a damaged key is not always broken. If you look at how your car doors work, you can see why. The notches in the key correspond to internal mechanisms of the lock or contact.

Keys are physical components that do not stand the test of time. Most of us do not pay attention to how much wear and tear the keys and locks undergo over time. We add to the wear a lack of maintenance and we have a perfect recipe for a damaged key.

If the notches in your key deteriorate over time and the key is no longer able to operate the internal mechanism of the lock, it is potentially damaged and this is the reason why your car key does not work. more.

3. Defective Contact Cylinder

Your key is not only associated with your door locks, it also works in accordance with the engine contact.
Car keys have several functions.
For each key that exists, there is a lock or mechanism that works with it.

If your car key does not work when you insert it in your contact, that does not mean that your car key is necessarily damaged or defective.

Sometimes we are faced with a symptom of a larger problem: a faulty contact with your car.

Cars are units of mechanical components that are always mobile. All of these components degrade over time and contact is no exception. 

4. Car Key Batteries Are Dead

Sometimes you have to look no further than the batteries in your transponder key or electronic key chain. It is a common problem with an equally common solution.

Batteries die over time, so diagnosing this problem is relatively simple.

If you notice that your vehicle is not responding to commands and signals sent to your vehicle, there is a good chance that the batteries have run out of juice.

However, keep in mind that this may not be the only reason that your battery will no longer work.

When you realize that your chip key is no longer working due to the batteries, the easiest solution is to find the right batteries and replace them. Once this is accomplished, your key should work like new.

5. Internal Damage to Keyless Entry Systems

As I mentioned earlier, there are several types of keys that have their own characteristics and traits.

The chip key establishes communication between a transmitter and a receiver, so if one of the components is defective, your key will not function properly.


If the problem is in your car’s electronics or there is damage to your receiver or transmitter, the car key will not work.

Sometimes the elements of these electronic systems will wear out and this wear manifests itself more than often by bare, cut wires, etc.

In other cases, damaged internal wiring can result from external damage to the chip key itself.
These problems arise when we drop the key or it undergoes a hard shock which displaces the internal alignment of the key components.

6. The key has not been programmed

Even traditional keys must go hand in hand with a car. On the other hand, technological advances in the automotive industry have changed the way we see this pairing.

Now the way car keys are paired with cars adds a higher level of protection.

This is accomplished by transmitters which are set up to facilitate the interaction between the key and the car and thereby make car protection more difficult to bypass.

Traditional keys have no programming bugs as can be encountered with transponder keys and joysticks.

If your key does not work with your vehicle, it is possible that this key has not yet been programmed with your car.

It’s common to forget to reprogram your transponder key when you acquire a new one or when you make duplicates. If this is not done correctly, the functions of the key will be limited to opening your doors or your suitcase.

7. You Used a Duplicate Car Key

Duplicate keys are popular with drivers and with good reason. This gives you peace of mind that there is less chance of getting caught when you get stuck outside your car. You will have the luxury of sharing your keys with a family member when they want to use your car.

On the other hand, many people do not realize that any duplication of keys reduces the integrity of the original key.

This may seem difficult to grasp. Let me explain. Each time your key is duplicated, the duplicate you get differs from the original. It may seem less important, but this duplication has an impact on the way your key works.

In some scenarios, you find that your car key does not work because of the difference between the copy and the original.

Having a duplicate is often a more affordable option than getting a new custom-made key. However, this is not always the best scenario for your safety.

If you find yourself caught in any of the scenarios we’ve described above, the best thing to do is call a phoenix locksmith near you to help you out.

And to prevent it from happening this way in the future…

Key Copies and Key Duplicates

Have you ever lost your keys and wished you had made a spare set? Replacing a key to your home, business or automobile can cost hundreds of dollars. A spare key made now is cheap insurance against future key loss. At Advanced Lock Service, we have over 2,500 different kinds of keys including:

  • Home
  • Business
  • Automobile
  • Padlock
  • Gate
  • Storage Unit
  • Office Equipment
  • Master Keys
  • And Much More

Avoid paying high dealership prices for a copy of your transponder “computer chip” key or high security “laser cut” car keys. We can duplicate and program the same keys at a fraction of the cost.

We also offer designer house keys. From your favorite sports team to your favorite Disney character, a designer key helps stand out on your key ring, providing you safety with a quick entry instead of fumbling to find the right key.

Don’t rely on keys cut by unskilled employees at a hardware store or grocery store. Our professionally trained locksmiths use precision calibrated key machines, perfect for ensuring that your key copy is cut with extreme accuracy.