Using a Key Programmer
Modern key fobs are more than just keys. They communicate with a vehicle to start it, open the rear hatch, and much more. To accomplish this, they need to be programmed to work with each other.
Car dealerships, your vehicle manufacturer, and auto locksmiths can all offer key programming services. You can do it yourself using the right equipment.
What is a key programmer?
Key programmer is a device used to recode the transponder in the key of a truck or car key or fob. This process is required when the fob or key needs to be programmed. It's also common when an existing key or fob has been stolen or lost. The device reprograms the chip inside the key to match the digital signature of the vehicle, allowing it to start.
Some vehicles have electronic immobilizer systems that stop theft by preventing the engine from starting without the correct key or fob. The system checks to see if the key or fob is digitally signed. If it doesn't it will shut down. This type of system has been found to be effective in reducing automotive theft and has been made mandatory for various models of vehicles 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 programming car key require specific keys that have been programmed by professionals to function with the anti-theft system. This is usually carried out by a dealer or locksmith through computers.
It is possible to reprogramme certain fobs and keys yourself, but it is not recommended until you're an experienced technician for automotive. The wrongly programmed key could cause the vehicle not to start, fail to run or even be destroyed. Most auto manufacturers have a specific method for programming these types of keys.
It is recommended that if you want to provide key programming as part of your service offerings you get an LSID. This credential allows you access to an inventory of key and immobilizer codes along with information about the product. This access lets you quickly and easily program and test a new key for customers. In addition, it also offers you support and documentation that can aid you in your day-today business operations.
How do I program an electronic key?
A key programmer can be used to reprogram the keys in your car. It reads data from the microchip inside your key, and write new information onto the chip. This will allow you to use the key and ensure that it functions properly. However the process of using a key programming device can be somewhat complicated and requires some technical expertise to utilize. Therefore, before you attempt to do this on your own, you should first consult an expert or locksmith for directions.
You can also purchase an electronic key programer and have it professionally programmed at a lower cost than the cost you would pay an auto shop to do the work for you. It is important to know that not all key programming products will work with your specific vehicle. Before making a purchase it is important to determine if the item is compatible with the model you have.

Dealers typically need to reprogramme your key fob. This is because the key fob will need to be reprogrammed with the specific information required by your vehicle's anti-theft system. Dealers will usually need the VIN number of the car to do this, and they will charge an amount. You can save money by giving your dealer a copy, which you will be able to obtain from the DMV of the majority of states.
For some cars you can also try to reprogram your own key if you already have a working key that is compatible with your car. This method is called the master key method, and it is applicable to certain vehicles to program a secondary key. For instance, if you have a GM vehicle, 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 purchase a specialized EEPROM key programmer which is a more expensive but more effective way to program car keys. This is the most advanced technology available, which requires you to disassemble the car and read the data from the chip inside the key. This kind of programming is best suited to professional automotive technicians who have vast experience in electronic repair.
What are the best choices for the most experienced programmers?
There are a variety of choices when it comes to key programmers. Some are solely focused solely on generating new keys, while others offer a variety of diagnostic and service functions that make them a complete tool for mechanics' workshops. XTool, a manufacturer of key programmer products that are well-received among customers, is one of these companies. Their products are easy to use and cost-effective with a focus on customer service.
One of the most well-known models from their range is the XTOOL Inplus IP616, rated as the top model in its class. It features an intuitive user interface and super clear instructions to guide users through the process of programming. There are two ways to do this: by vehicle or by typing. The first is easier and better suited to novices and home mechanics while the second is more sophisticated and requires some knowledge.
Autel MaxiIM IM608PRO Auto Key Programmer is another great alternative. It is a more recent model that offers increased stability and power. It has an extremely powerful IMMO function as well as OE-level full system diagnostics, which makes it ideal for professional automotive technicians.
This model also allows for bypassing immobilizers that were used in earlier Renault vehicles. It has a range of other functions that are useful, including reading mechanical key codes and dealer tool security codes. In addition, it can read CAN data on some Peugeot and Citroen vehicles and has an extremely long-lasting battery.
Despite its impressive capabilities, the XTOOL Inplus IP616 is still relatively affordable. It's priced at less than $500 which makes it a good choice for any mechanic. It 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 advanced option. This is an advanced IMMO device that comes with many features, including the ability duplicate Freescale 9S12MCUs. It has a greater range of features than the previous model, and also has an CAN bus communication system that can be used with ECUs.
Which key programmer is the best for me?
It all comes down to what kind of work you do and what you require from your key programmer. If you're an auto locksmith you might need an instrument that can program the widest range of vehicles, such as the Smart Pro or Autel IM608 Pro. They can perform everything from writing or reading on the key, to ECU programming, and even advanced programming at the OE level.
For mechanics who don't need the full equipment, there are more basic 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, EPB reset, battery reset and throttle body reset.