Using a Key Programmer
Modern key fobs do more than just act as keys. They communicate with the vehicle to start it up and open the rear hatch and more. To do this, they have to be programmed together.
Car dealerships, your vehicle manufacturer, and auto locksmiths can provide key programming services. You can do it yourself with the right tools.

What is a key programer?
A key programmer is a tool used to change the transponder code in the car or truck key or fob. This is needed when the fob or key has to be programmed. It is also often necessary in the event that an existing fob or key has been lost or stolen. The device essentially reprograms the digital signature on the chip inside the key to match the signature of the vehicle and enable it to start.
Some vehicles come with electronic immobilizer systems that prevent theft by preventing the engine from running without the correct fob or key. This is accomplished by having the car's system check to make sure that the key or fob has the right digital signature. The system will shut off when it isn't. This kind of system has been found to be effective in reducing the incidence of theft and has been made mandatory for various models of vehicles by the manufacturer.
Most anti-theft systems are controlled by a module installed in the engine compartment or instrument cluster or ignition lock. In certain instances they require keys that have been specifically programmed by an expert to work with the anti-theft system. This is usually carried out by a dealer or locksmith through the use of a computer.
It is possible to reprogram certain keys and fobs by yourself however it is not recommended until you are an experienced technician for automotive. This is because the wrong programmed key could cause the vehicle to fail to run, not start or be destroyed. The majority of auto manufacturers have a very precise procedure for programming keys.
If you are planning to add key programming to your service offerings It is recommended that you get an LSID (Locksmith Service ID). This credential grants you access to a secure database of information about the product and keys and immobilizer codes via the NASTF's Secure Data Release Model. This allows you to swiftly and easily program and test a new key for customers. It also provides essential documentation and support that can assist you in your everyday business operations.
How do I program a key?
A key programmer can be used to reprogram the keys in your car. It reads information from the microchip in your key, and write new information to the chip. This will allow you to use the key and ensure that it functions correctly. However the process of using a key programer is a bit complicated and requires some technical expertise to utilize. Therefore, before you attempt to accomplish this by yourself you should first talk to an expert locksmith or locksmith for directions.
You can also buy an online key programmer and get it professionally programmed at a much lower price than you would pay to have a dealership do the work. However, keep in mind that not all key programmers are compatible with your car and you should make sure to check the compatibility of the item with your vehicle's model prior to purchasing.
Dealers typically need to reprogram your key fob. The key fob needs to be reprogrammed in order to include the information specific to your car's anti theft system. Dealers will usually need the VIN number of your vehicle to do this, and they charge fees. You can save money by giving your dealer a copy which you'll be able to obtain from the DMV of the majority of states.
For certain cars you may also be able to reprogram your own key if you have a second working key that works with your vehicle. This is referred to as master key method and can be used to program a different key on some vehicles. If you have a GM car, for example put your key in the ignition until the security light goes out. After the security light is out, you can remove the working key and insert the new one.
You can also purchase a specially designed EEPROM key programmer which is a more expensive, but more efficient way to program a car key. This is a more advanced technology, which requires you to disassemble the car and read the data from the chip in the key. This type of programming is best for professional automotive technicians who have extensive experience in electronic repair.
What are the top programming options for key programmers?
There are a number of choices when it comes to key programmers. Some are single-purpose, focused only on the creation of new keys, whereas others provide a range of diagnostic and service functions that make them a comprehensive tool for a mechanic's workshop. XTool is a producer of key programmer products which are highly rated by customers is one of these manufacturers. Their products are affordable and feature a customer-focused approach making them easy to use.
One of the most well-known models from their range is the XTOOL Inplus IP616, rated as one of the top in its class. It offers an easy-to-use interface and super clear instructions that guide users through the process of programming a new key. There are two ways to do this: via vehicle or by typing. The first method is easier and more suitable for beginners and home mechanics, whereas the second one is more complex and requires more expertise.
programming car key is a great alternative. This device is an upgrade from the previous model, bringing greater power and stability. It has a powerful IMMO function and OE-level full system diagnostics, which makes it ideal for professionals in the field of automotive mechanics.
This model also has the ability to bypass immobilizers that were installed on earlier Renault vehicles. It also comes with additional useful features, including reading mechanical key codes or dealer tool security codes. Additionally, it is able to read CAN information on certain Peugeot and Citroen vehicles and also has a long-lasting battery.
Despite its impressive features, the XTOOL Inplus IP616 remains relatively affordable. It is available for less than $500, which makes it a fantastic option for any DIY or mechanic rvinepairman. The device comes with a rechargeable battery, as well as a quick boot-up speed, and it is compatible with both OBD and CAN protocols.
If you're looking for an even more advanced option, you should consider the Autel XP400 Pro Auto Key Programmer. This is an advanced IMMO device that has several features, including the ability clone Freescale 9S12MCUs. It has a greater range of features than the previous model and comes with an CAN bus communication system that can be used with ECUs.
Which key programmer is right for me?
In the end, it all comes down to the kind of work you perform and what you want from your key programmer. If you're an auto locksmith you might need an instrument that can program the largest range of vehicles, such as the Smart Pro or Autel IM608 Pro. They can perform everything from reading/writing on a key, to ECU programming, and even advanced programming at the OE level.
There are more affordable options for mechanics who don't need the entire rig. One of these is the Xtool Pad3 tablet key programmer. It is designed to perform key programming, but it also has advanced special functions including oil service light reset and battery reset, EPB reset, and throttle body reset.