Modern vehicles use a special computer chip in the key fob to communicate with the vehicle. The key and computer have to be programmed so that they know each other.
Depending on the vehicle manufacturer the procedure can be completed by a locksmith or the dealership. The process varies slightly however, it is generally easy.
What is key programming?
It is best to have them reprogrammed professionally if your car keys aren't working because of an unrepaired or damaged key fob. The process can be complex and dangerous if not handled correctly. There are various procedures to be considered dependent on the type of vehicle. This is one reason why many prefer to have this service performed by a seasoned auto locksmith instead of attempting to do it on their own.
The reprogramming process for most vehicles is relatively simple. The professional will first assess the model and make of the car to determine the blank key fobs, tools and other components needed. They'll then program the new key or copy the chip that is already in the key using specialist equipment. They'll then test the key to verify that it is functioning properly.
Some vehicles require a sophisticated programming system that only a few car specialists have access to. This is a costly option that takes many hours of education to master. If you have an experienced and reliable auto locksmith with the appropriate equipment, they can complete this process quickly and efficiently for you.
Certain vehicles also come with programming procedures for EEPROMs that have to be handled by an expert. These procedures can take up to several hours and are difficult to follow. These methods can be dangerous and could damage the circuit board in the antitheft system of your vehicle.
You'll need a guide for your vehicle if need to change the programming of your keys. There are a few that work for all models however, they are not for all models. Most of these guides will recommend against DIY methods since they could result in the information stored on the security module in your vehicle being damaged.
In some cases manufacturers will not allow their dealers to reprogramme keys. They will require an encrypted connection to the factory computer which stores this information. This will stop other people from being able to use your vehicle if they were to gain access to your original key.
How do I program a key?
Car key reprogramming is a procedure that takes place when a new chip is put into the key and programmed to ensure that it suits the current configurations of your vehicle. Requesting a replacement key through the manufacturer of your car could be an option, but this will take time and while it's in the meantime, you will not have the convenience of being able to travel without difficulty. Car locksmiths can help!
Depending on the car you own, you may be able to reprogram your key with software you can purchase online. However these programs do not support every make or model and may be confusing to use. In general, it is recommended to hire an expert do this for you as they have the right tools and know how to program your key properly.
You'll need an empty set of keys that match the vehicle's make and model in order to do this. You can buy them on the internet at a bargain cost, but make sure they're not damaged. You can also go to a locksmith, but they will charge more since they must purchase their own software and tools to program your car keys.
These advanced car key programmers are costly and only accessible to professionals with the proper license. In addition, these cars typically have a 'token' system that allows only one attempt at programming to be made per day or hour. If car key programmer near me program the key repeatedly then the code in the car may become corrupted.
It is therefore recommended to only let an experienced auto locksmith complete the reprogramming of your keys for you. They will have a deeper knowledge of the software, security systems and other aspects involved. This can reduce the chance of errors or corruptions. Furthermore, they will be equipped with the most recent software and tools to use them which are much safer and more efficient.
What do I need to get a key programmed?
Modern vehicles require keys that have special chips that communicate with the car's systems. These chips must be programmed to work with your specific vehicle -- making it impossible to just use any key fob with your vehicle even if it's a duplicate. This makes it more difficult to steal your car but also means that you cannot replace your broken key with a new fob and expect it to work. Most people will have to get a locksmith's help to program the key to their vehicle however it's possible in some instances to do it yourself.
You will need two car keys that work. Once you have them, you can sit in the drivers' seat and turn on your car's ignition. Insert your new key in the ignition and turn to start your car. This will link the new key to your system and make it a functioning replacement for the lost one. The procedure may differ slightly depending on the manufacturer. Check the instructions that came with your key, or search online for the model/year/make you are looking for to discover the exact steps.
If you're looking to save money on your key programming expenses, think about buying a new key shell instead of a brand new key head. The shell is essentially the plastic piece with the key blade, and you can often buy key shells at a lower price from hardware or auto parts stores. However, you'll need to transfer the internals from the previous key head (the circuit board and chip) into the new shell prior to it being programmed.
It can be done by a professional, however it will cost you more than a standard spare key. The professional will have to have an advanced programmer to connect to your car's computer, and this device can cost thousands of dollars. On the internet, you might be able to buy a lower version. However, this is not compatible with your car.
Reprogramming a car key can be a difficult procedure. Certain models are more difficult to program than other. Some have a fairly simple process that can be done by hand or using an OBD2 reader, while other models need to be programmed using a specific tool known as an EEPROM reader. Some of these tools are only available through a dealer and they can be expensive, making this something you should leave to professionals.
How long will it be before a key is programmed?
It depends on what type of vehicle you own and whether it comes with special anti-theft features. Many cars have an electronic system that stops the key from working if not programmed to the vehicle. This is done in order to stop theft and will require that a locksmith professional be hired for each model. The key must communicate with the computer onboard to unlock the doors or start the engine. A professional auto locksmith can figure this out quickly.
Certain car brands are difficult to program even for a seasoned professional. For these models, the process could take hours or even days. This is because the process will require EEPROM programming procedures that a majority of locksmiths are not able to.
Other features of cars may also require programming to work properly. This could be a remote starter, automatic transmission or power windows. A professional auto locksmith can help you if your keys have gone missing or are broken.
Most professionals will need to assess the make and model of the vehicle they're working on before they are able to determine exactly what tools they'll need. They will also need a blank key compatible with their vehicle. Once they have both these items they can program the transponder chip or key fob, and also clone the key if needed. Once all the work is completed, they will test the key to confirm it's functioning.

The dashboard security light will remain in place until the key is programmed correctly. This is to notify the owner that the key isn't working properly and must be programmed by a professional.
It is crucial to have an extra key in case you lose or damage yours. It can be costly and time-consuming to program a broken key. A locksmith in your car can complete the job much more efficiently and at less cost!