Using a Key Programmer

Modern key fobs aren't simply keys; they can communicate with vehicles to start it, open the rear hatch, and more. To do so they must be programmed to work with each other.

Car dealerships, your car manufacturer, and auto locksmiths can all provide key programming services. You can do it yourself using the right tools.

What is a key programmer?

A key programmer is a tool used to recode the transponder in the car or truck fob or key. This is required when a new key or fob needs to be programmed. This process is typically required when a key or fob is lost or stolen. The device reprograms the chip inside the key to match the digital signature of the vehicle and allows 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 car's system examine to ensure that the key or fob has the correct digital signature. The system will shut down in the event that it doesn't. This type of system is effective in reducing theft of automobiles, and was made mandatory for various models of automobile by the manufacturer.

The majority of these anti-theft systems are controlled by a module installed in the vehicle's engine instrument cluster, 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 using computers.

While it is possible to reprogramme some keys and fobs by yourself, it is not recommended unless you're an skilled automotive technician. The reason is that a poorly programmed key can cause the vehicle to fail to start, run or even be destroyed. Most auto manufacturers have a particular procedure for programming these types of keys.


If you're looking to add key programming to your offerings it is recommended you obtain an LSID (Locksmith Service ID). This credential gives you access to a database of key and immobilizer codes, as well as information about the product. This access allows you to swiftly and easily program and test a new key for customers. Additionally, it provides you with important assistance and documentation to help you with your day-to-day business operations.

How do I program the key?

Key programmer devices can be used to reprogram the keys of your car. It will read the information from the microchip inside your key and write new data to the chip. This allows you to use the key, and ensure that it is functioning properly. However, the process of using a key programmer is a bit complicated and requires some technical knowledge to make use of. Therefore, before you attempt to do this yourself you should first talk to an expert or locksmith for guidance.

You can also purchase a key programer and get it professionally programmed online at a cost that is lower than what you would pay an auto shop to do the work for you. However, keep in mind that not all key programmer models will be compatible with your vehicle and you must confirm the product's compatibility with your vehicle's model before purchasing.

Dealers will usually need to reprogramme your key fob. The key fob has to be reprogrammed in order to include the specific information needed for the anti-theft system of your vehicle. Dealers typically require the VIN number for your vehicle in order to do this, and usually charge a fee for it. You might be able to save money by giving the dealer a copy your title which is available through the DMV in most states.

For certain vehicles, you can also try to reprogram your key if you have another working key that works with your vehicle. This method is called the master key method and it can be applied to some vehicles to program the secondary key. For instance, if you are driving a GM vehicle, you can insert your working key into the ignition and turn it on until the security light goes off. Once that happens then you can remove your working key and then insert the new one to program it.

You can also buy an exclusive EEPROM Key Programmer. This is more expensive, but more efficient method of programming a car key. However it is a more advanced technology that requires dismantling the car and reading the data from the microchip in the key. This kind of programming is ideal for skilled automotive technicians with vast experience in electronic repair.

What are the best programming options for key programmers?

There are a variety of options in the field of key programmers. Some are purely for use, focusing exclusively on creating new keys, while others offer a variety of diagnostic and service functions that make them an all-in-one tool for the mechanic's workshop. XTool, a manufacturer of key programmer products that are well-received among customers is one of these manufacturers. The products are affordable and have a focus on the customer which makes them simple to use.

One of the most adored models from their range is the XTOOL Inplus IP616, rated as one of the top in its class. It has a user-friendly interface with super clear instructions that guide users through the process of programming. There are two ways to do this: by vehicle or by type. The first is easier and better suited to home mechanics and beginners while the second is more advanced and requires some knowledge.

Autel MaxiIM IM608PRO Auto Key Programmer is another great alternative. It is a more recent model that has more performance and stability. It is equipped with a powerful IMMO feature and OE-level diagnostics. This makes it ideal for automotive technicians who are professionals.

This model also has the ability to bypass immobilizers on earlier Renault vehicles. It also comes with other useful features, like reading mechanical key codes, or dealer tool security codes. It also reads CAN data from a variety of Peugeot and Citroen automobiles, and comes with an extremely long-lasting, rechargeable battery.

Despite its impressive features, the XTOOL Inplus IP616 remains relatively affordable. It is available for less than $500, making it an excellent choice for any DIY or mechanic repairman. The device is equipped with rechargeable batteries and a speedy boot-up process and supports both OBD CAN protocols.

Autel XP400 PRO Auto Key Programmer is a more sophisticated option. automotive key programming is an advanced IMMO device that comes with a number of features, including the ability clone Freescale 9S12MCUs. It also supports a wider range of vehicle manufacturers than the previous model and has an enhanced CAN bus communication engine that can work with the most recent ECUs.

Which key programmer is right for me?

It all depends on what kind of work you perform and what you expect from your key programmer. If you're an auto locksmith, you might need an instrument that can program the broadest variety of vehicles, such as the Smart Pro or Autel IM608 Pro. They can be used for everything from reading/writing on the key, to ECU coding, and some basic programming for OE.

For mechanics that don't need the full-on rig, there are simpler alternatives such as the Xtool PAD3 tablet key programmer. It's designed to do key programming but also offers advanced special functions including oil service light reset as well as battery reset, EPB reset, and throttle body reset.