Using a Key Programmer
Modern key fobs go beyond just keys. They communicate with a vehicle to start it and open the rear hatch, and so on. To accomplish this they must be programmed to work in conjunction.
All car dealerships, auto manufacturers, and auto locksmiths offer key programming. You can do it yourself using the right equipment.
What is a key developer?
A key programmer is used to recode the transponder in the fob or key for an automobile or truck, or any other vehicle. This procedure is necessary when the fob or key needs to be programmed. It's also common in the event that an existing fob or key has been stolen or lost. The device basically reprograms the digital signature of 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 stop theft by preventing the engine from running without the correct key or fob. The system checks to see whether the fob or key is digitally signed. If it doesn't then the system will shut down. This kind of system is efficient in reducing automobile 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 vehicle's engine or instrument cluster or ignition lock. In certain instances the modules require special keys that have been designed by experts to work with the antitheft system. This is typically done by a dealer or locksmith with a computer.
It is possible to reprogram certain fobs and keys yourself but it isn't recommended until you are an experienced technician in the field. This is because a wrongly programmed key could cause the vehicle to run, not start or be destroyed. The majority of auto manufacturers have a specific procedure for programming keys.
It is advised that if you intend to offer key programming as a part of your service offerings you acquire an LSID. This credential allows you access to a secure database of product information and immobilizer and key codes using the NASTF's Secure Data Release Model. This access permits you to create and test new keys for customers quickly and easily. It also provides essential documentation and support that can help you with your daily business operations.
How do I program the key?
Key programmer devices can be used to reprogram the keys in your car. It will read the information from the microchip inside your key and then write new information to the chip. This will allow you to use the key and will ensure it is working properly. However, the procedure of using a key programer can be somewhat complicated and requires some technical knowledge to make use of. Before you attempt to make this yourself, you must consult a professional locksmith or professional for guidance.
You can also purchase a key programmer and have it professionally programmed online at a lower cost than what you would have to pay an auto shop to do the job for you. But, remember that not all key programmers are compatible with your vehicle and you should make sure to check the compatibility of the product with your model of car prior to purchasing.
Dealers typically need 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 car to do this, and will charge fees. You could be able save money by giving the dealer a copy of your title that you can get through the DMV in most states.
For some cars, you can also try to reprogram your own key if you already have a working key that works on your car. This is called a master key method and it can be used to program a second key on certain vehicles. For example, if you have a GM vehicle, you can insert your working key into the ignition and switch it on until the security light turns off. Once this happens then you can remove your working key and then insert the new one to program it.
You can also purchase a specialized EEPROM key programmer, which is a more expensive but more effective way to program car keys. However this is a more advanced technology that requires removing the car and reading the information from the microchip inside the key. This kind of programming should only be done by trained automotive technicians who have extensive experience in electronic repairs.
What are the best choices for programmers with a high level of expertise?
There are many options available in the field of key programmers. Some are purely for use, focusing exclusively on creating new keys, while others include a wide range of diagnostic and service functions, making them a complete tool for the mechanic's workshop. XTool is a producer of key programming tools that are well-received among customers is among these manufacturers. Their products are easy to use and affordable, with a customer-focused focus.
One of the most well-known models from their range is the XTOOL Inplus IP616, rated as the top model in its class. It comes with an easy, user-friendly interface and super clear instructions that help users through the process of programming a new key. There are two ways to do this: by vehicle or by type. The former is more straightforward and is more suited to home mechanics and beginners, while the latter is more advanced and requires a bit more understanding.
Another option to consider is the Autel MaxiIM IM608 PRO Auto Key Programmer. It is a more recent model that provides more power and stability. It features an IMMO function that is powerful and full system diagnostics at OE-level which makes it ideal for professionals in the field of automotive mechanics.
This model can also bypass immobilizers on early Renault vehicles. car keys programmer has a range of other useful functions, including reading mechanical key codes and dealer tool security codes. In addition, it can read CAN data from certain Peugeot and Citroen vehicles and also has a long-lasting battery.
Despite its impressive capabilities, the XTOOL Inplus IP616 is still reasonably affordable. It's priced at less than $500, making it a great choice for any DIY or mechanic repairman. The device comes with a rechargeable battery as well as a quick boot-up time, and it can be used with both OBD and CAN protocols.
Autel XP400 Pro Auto Key Programmer is a more sophisticated option. It's an advanced IMMO device that includes a number of features, including the ability clone Freescale 9S12MCUs. It also supports a wider variety of vehicle manufacturers than the previous model and has an improved CAN bus communications engine that can work with the latest ECUs.
Which key programmer is the best for me?
It all boils down to what kind of work you perform and what you require from your key programmer. If you are an auto locksmith, then you may require a key programer that can be used on an array of vehicles. For example the Smart Pro or Autel IM608 Pro. They're designed to do everything from read/write on the key to ECU coding and some OE level programming.
There are more affordable options for mechanics who do not require the entire equipment. One of them is the Xtool Pad3 tablet key programmer. It is specifically designed for key programming, however it also has advanced special functions, like oil service light resets, battery resets EPB resets, and throttle body resets.