Using a Key Programmer
Modern key fobs do more than just act as keys. They communicate with the vehicle to start it up, open the rear hatch and more. To do so, they need to be programmed to work in conjunction.
Car dealerships, your car manufacturer and auto locksmiths all provide key programming services. However, you can also do it yourself, if you have the right equipment.
What is a key programmer?
A key programmer is a tool used to change the transponder code in the car or truck fob or key. This process is required when a new fob or key has to be programmed. This process is often required when a fob or a key is stolen or lost. The device basically reprograms digital signature on the chip inside the key to match that of the vehicle and allow it to start.
Some vehicles come with electronic immobilizer systems that prevent theft by stopping the engine from running without the correct key or fob. This is done by having the system check to make sure that the key or fob has the correct digital signature. The system will shut off in the event that it doesn't. This type of system is efficient in reducing automobile theft, and was made mandatory for many models of car by the manufacturer.
The anti-theft system can be controlled by a device that is placed in the vehicle's engine compartment or instrument panel or ignition lock. In reprogram car key , these modules require special keys that are created by a professional to function with the anti-theft system. This is usually performed by a dealership or locksmith through computers.
It is possible to reprogram certain keys and fobs yourself, but it is not recommended until you are an experienced automotive technician. This is because the wrong programed key could cause the vehicle to fail to run, not start or be destroyed. Most auto manufacturers have a very specific procedure for programming these types of keys.

It is advised that if you intend to offer key programming as a part of your service offerings you get an LSID. This credential allows you access to an inventory of immobilizer and key codes, as well as details about the product. With this access, you are able to program and test new keys for customers quickly and easily. Additionally, it provides you with important assistance and documentation to aid you in your day-today business operations.
How do I program a key?
A key programmer is a piece of equipment that allows you to change the key codes in your car. It will read information from the microchip inside your key, and write new information onto the chip. This will allow you to use your key and ensure that it functions correctly. However the process of using a key programming device can be a bit difficult and requires some technical expertise to make use of. Therefore, before you attempt to accomplish this on your own you should first talk to an expert or locksmith for instructions.
You can also purchase a key programer and have it professionally programmed online at a cheaper cost than what you would have to pay a dealership to do the work for you. But, remember that not all key programmer models will be compatible with your car and you must confirm the compatibility of the product with your model of car before purchasing.
Dealers will usually need to reprogramme your key fob. The key fob must be reprogrammed in order to include the specific information for your car's anti theft system. A dealer will typically require the VIN number for your vehicle to perform this, and will usually charge a fee for this. You can save money by providing your dealer a copy of the VIN, which you are capable of obtaining from the DMV of the majority of states.
You can also reprogramme your car's keys when you already have a working key. This is known as the master key method, and it can be applied to some vehicles to program a secondary key. If you have an GM car, for example, insert your key into the ignition until the security light goes out. Once that happens then you can remove your working key and then insert the new one to program it.
You can also purchase an specialized EEPROM Key Programmer. This is more expensive, but more effective method of programming the car key. However it is a more advanced technology that requires removing the car and reading the information from the microchip in the key. This type of programming should only be performed by trained automotive technicians who have extensive experience in electronic repairs.
What are the best options for key programmers?
There are a number of alternatives when it comes down to key programmers. Some are single-purpose, focused exclusively on creating new keys, whereas others offer a variety of diagnostic and service functions that make them a complete tool for mechanics' workshops. XTool is one such company, producing a selection of key programmer devices that have been well-received by customers. The products are affordable and are based on a customer-centric approach making them simple to use.
One of the most adored models in their range is the XTOOL Inplus IP616, rated as the top model in its class. It offers an easy-to-use interface with super clear instructions that assist users in the procedure of programming a new key. There are two ways to accomplish this: by vehicle or via type. The former is more straightforward and more suitable for 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. This is a brand new model that provides more stability and power. It comes with a powerful IMMO feature and OE-level diagnostics. This makes it perfect for professionals who work in the automotive industry.
This model can also bypass immobilizers in early Renault vehicles. It 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 has an extremely long-lasting battery.
Despite its incredible capabilities, the XTOOL Inplus IP616 is still reasonably affordable. It is available for under $500 which makes it a good choice for any mechanic. The device comes with a rechargeable battery and a fast start-up time, and supports both OBD and CAN protocols.
Autel XP400 PRO Auto Key Programmer is a more advanced option. This device is an advanced IMMO tool that has a number of additional options, including the ability to duplicate Freescale 9S12 MCUs. It also supports a greater range of vehicle manufacturers than the previous model, and features an upgraded CAN bus communication engine that works with the latest ECUs.
Which key programmer is right for me?
It all depends on the type of work you do and what you need from your key programmer. If you are an auto locksmith, then you may require an instrument that can program the entire range of vehicles. For instance the Smart Pro or Autel IM608 Pro. They can perform everything from reading/writing on a key, to ECU programming, and even basic programming for OE.
For mechanics that don't need the entire rig, there are simpler options like the Xtool PAD3 tablet key programmer. It's designed to do key programming, but it also has advanced functions like oil service light reset, EPB reset, battery reset and throttle body reset.