Using a Key Programmer
Modern key fobs do more than just act as keys. They communicate with the vehicle to get it started, open the rear hatch, and more. To do this, they must be programmed.
All car dealerships, auto manufacturers and auto locksmiths can provide key programming. But you can do it yourself if you have the right equipment.
What is a key programmer?
A key programmer is used to reprogram the transponder on the fob or key of a car, truck or other vehicle. This process is required when a new fob or key must be programmed. It is also necessary in cases where an existing fob or key has been stolen or lost. The device reprograms the chip inside the key to match the digital signature of the vehicle which allows it to begin.
Some vehicles have electronic immobilizer systems that stop theft by stopping the engine from running without the correct key or fob. reprogram car key is done by having the car's security system examine to ensure that the key or fob has the correct digital signature. The system will shut down when it isn't. This type of system is very effective in reducing car theft and was made mandatory for many models of car by the manufacturer.
Most of these anti-theft systems are controlled by a module installed in the engine compartment or instrument cluster or ignition lock. In some instances, these modules require special keys that have been specifically created by an expert to work with the anti-theft system. This is usually done by a dealership or locksmith via computers.
Although it is possible to reprogram some fobs and keys by yourself however, it is not recommended unless you're an skilled technician in the field of automotive. This is because a wrongly programmed key can cause the vehicle to fail to start, run or even be destroyed. The majority of auto makers have a very precise procedure to program these keys.
It is recommended that if you want to provide key programming as part of your service, you obtain an LSID. This credential allows you access to a secure database of information about the product and keys and immobilizer codes via the NASTF's Secure Data Release Model. Having this access allows you to create and test new keys for customers quickly and easily. It also provides essential documentation and support that can assist you in your day-to-day business operations.
How do I program the key?
A key programmer is a piece equipment that can help you change the key codes in your car. It reads the information from the microchip inside your key and write new information to the chip. This allows you to use the key, and ensure that it works correctly. However, the process of using a key programmer can be somewhat complicated and requires some technical expertise to utilize. Before you attempt to program the key yourself, consult a professional locksmith or professional for instructions.
You can also purchase an electronic key programer and have it professionally programmed at a lower cost than what you would pay an auto shop to do the work for you. Be aware that not all key programmer models are compatible with your car and you must ensure the product's compatibility with your vehicle's model before making a purchase.
Dealers usually have to reprogram your key fob. This is because the key fob will need to be reprogrammed with the specific data for your vehicle's anti-theft system. Dealers will usually need the VIN number of your vehicle to do this, and they charge an amount. You might be able to save this cost by giving the dealer a copy your title that you can get through the DMV in the majority of states.

For certain cars, you can also try to reprogram your key if you already have a working key that works with your vehicle. This is referred to as master key method and can be used to program a second key on some vehicles. For instance, if own an GM vehicle, insert your working key into the ignition and switch it on until the security light turns off. After that then you can remove the working key and insert the new one to program it.
You can also buy a specialized EEPROM key programmer, which is a more expensive, but more efficient way to program a car key. This is an advanced technology which requires that you remove the car from its frame and read the information from the chip inside the key. This kind of programming should only be performed by trained automotive technicians who have extensive experience in electronic repairs.
What are the best choices for key programmers?
There are a variety of options when it comes to key programmers. Some key programmers are created to serve a single use, like generating new keys. Others have diagnostic and service features to make them a multi-purpose tool for a mechanic's shop. XTool is one such company offering a variety of key programming devices that have been well-received by customers. Their products are easy to use and cost-effective and have a focus on the customer.
One of the most well-known models in their range is the XTOOL Inplus IP616, rated as one of the best in its class. It comes with an intuitive user interface and super clear instructions that guide users through the process of programming. It has two methods of accomplishing this: by vehicle or by typing. The first method is easier and is suitable for beginners and home mechanics, whereas the second is more advanced and requires more experience.
Another option that is worth considering is the Autel MaxiIM IM608 Pro Auto Key Programmer. This device is an upgrade of the previous model, bringing greater power and stability. It is equipped with a powerful IMMO feature and OE-level diagnostics. This makes it perfect for professional automotive technicians.
This model also has the capability to bypass immobilizers on early Renault vehicles. It also has other functions that are useful, including reading mechanical key codes and dealer tool security codes. It also reads CAN data from a variety of Peugeot and Citroen cars, and it comes with a long-lasting, rechargeable battery.
Despite its impressive features, the XTOOL Inplus IP616 remains relatively affordable. It's priced at less than $500, making it a great option for any mechanic. The device comes with a rechargeable battery, as well as a quick boot-up time, and it is compatible with both OBD and CAN protocols.
If you're looking for an even more advanced solution, consider the Autel XP400 Pro Auto Key Programmer. This device is an advanced IMMO tool with numerous additional features, including the ability to copy Freescale 9S12 MCUs. It has a greater range of features than the previous model and also has a CAN bus communications system that can work with ECUs.
Which key programmer is the best for me?
It all boils down to the type of work you perform and what you need from your key programmer. If you are an auto locksmith, then you may need a key programmer that covers an array of vehicles. For instance, the Smart Pro or Autel IM608 Pro. They're designed to do everything from read/write on the key to ECU programming and some OE level programming.
There are more affordable options for mechanics who don't require the whole equipment. One of these is the Xtool Pad3 tablet key programmer. It's designed to do key programming, but it also has advanced special functions including oil service light reset and battery reset, EPB reset, and throttle body reset.