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Reprogramming Car Keys Transponder keys for car keys are thought to keep cars more secure and are more difficult for thieves to duplicate Keys may need to be reprogrammed in event of damage or lost You can change the programming of your key fobs at home however you should be aware of the correct procedure You must have these things to get the best results Keys Modern cars require a transponder key to operate This gives security and protection against theft These keys are programmed by a locksmith or an authorized dealer to work with your cars systems and the specific model Its expensive to replace them if they become lost so its best to have spares available You can purchase key fobs that can be replaced in online stores and many brick and mortar auto shops How can you ensure that the key you purchased is authentic Can you tell whether the unit has been programmed to work with another vehicle or if yours can be programmed again If you are planning to program a new key the first step is to ensure that your vehicle is operating Insert the key you want to reprogram into the ignition without turning it There are only a few seconds left before the system will reset all commands and exits the programming mode For this reason it is essential to move fast and not pause between steps Turn off the engine to avoid this Switch the key from on to off to test the system The door locks should be able to cycle and you will hear a chime signalling that the process was successful Certain vehicles of recent years use rolling key technology to prevent thieves from using stolen keys to start the car This feature is still vulnerable to a technique called a replay attack It allows thieves to record and then reproduce the signal from the key fob of the vehicle to open the car To prevent this manufacturers have added an additional security feature known as the CAN bus protocol to thwart attacks on hacking Certain manufacturers also have special encryption on their key fobs which are not decoded by an easy program It is best to only attempt this method if your previous experience is with electronic devices Refer to the manual for your car or go to the website of the manufacturer to learn how to program it The steps are different according to the type of vehicle Transponder chips Transponder chip car keys require a specific reprogramming to function Any hardware store can make you a new car key however the real challenge lies in integrating it with your car The key must be programmed to match the exact identification number of your car otherwise it wont be able to start Transponder chips used to prevent car theft are a standard feature of modern cars The chip is a small microcircuit that emits a radio frequency signal when the ignition key is inserted The car is able to detect the signal and starts the engine only if it matches the original that was programmed into the vehicle The car will also shut down if a frequency is invalid This makes it harder for thieves with no experience to wire a vehicle hot and then turn it on The key and the chip are connected via an electronic circuit board that contains an induction coil When the key is put in the ignition the magnetic field is created around the transponder This creates a signal which is taken up by the coil before being sent to the keys identification The keys ID number is transmitted back to the vehicle and if it is in line with the engine will start There are several ways to program a transponder however each requires an instrument that is specifically designed for You can buy these tools online or at most locksmiths in the automotive industry These tools arent expensive but they are essential for programming the chip in your car You can also use an resettable key that was programmed for a different vehicle In this case make sure the key isnt damaged or that the transponder has not been altered in any way You can read the chip by using a scanner or a computer with a USB connector Reprogramming an transponder is a simple procedure but requires specialized software It also requires a scanner tool Its best to ask an auto locksmith for assistance if youre a novice Also avoid buying secondhand keys as theyre likely to be programmed and will not work with your vehicle EZ Installer Until recently those who wanted to replace their key fob had to go to an agent to have it electronically paired with the vehicle This is because modern keys have to be paired to the vehicle of the owner in order to function which required expensive and complex equipment that only dealers could access The EZ Installer from Car Keys Express solves this issue for locksmiths and retailers by simplifying the process of connecting modern keys to vehicles The EZ Installer is a basic plug and play OBD device that pairs new keys to vehicles without the need for complex equipment or programming tokens It connects directly to the standard OBD port on the vehicle and uses an application that is mobile that provides easytofollow instructions The EZ Installer is compatible with most newer vehicles that have proximity keys or push button start Check the compatibility guide at Toms website to see if your vehicle is compatible A full moneyback guarantee is offered in the event that the device fails to successfully program a key or remote purchased from Toms for a compatible vehicle Unlike traditional programming equipment which can cost key professionals hundreds of thousands of dollars in token fees per key the EZ Installer Pro does not charge these fees It is able to be used for as long as a key professional or retailer requires The EZ Installer eliminates the need for costly monthly service contracts and software updates This lets retailers save money while providing their customers the same highquality service as OEM equipment It also offers a top warranty that covers both hardware and software for the duration of your life Tools Car key programming tools can be used by locksmiths auto technicians and owners of vehicles to programme new keys for their automobiles These tools connect to the vehicles immobilizer system to program new keys and remote controls These tools can be used to make duplicate keys and clone keys These tools are a valuable tool for anyone who owns an automobile Autel Maxisys MS906BT is among the most popular tools to program keys for cars This vehicle diagnostic scanner is compatible with the major brands and provides advanced OE features It features an essential programming feature that can backup the current key information It is also capable of resetting the immobilizer as well as clearing immobilizer fault codes Another important tool to reprogramme car keys is the OTOFIX IMM1 This auto diagnostic scanner is able to read passwords from all major brands and comes with advanced features that are OElevel It also has the ability to perform online calibration customization and EEPROM reading how to program a car key is also equipped with a feature that allows it to bypass the PIN code for BMW and Mercedes It is also able to read EEPROMs car MCUs and CANEEPROMs for all major models The bidirectional scanner XToolUSA is another popular choice for reprogramming vehicles This is a fantastic tool for auto repair shops and locksmiths since it can read codes and key data from most vehicles within seconds It also features an active test feature that helps find the problem quickly There are a myriad of ways to reprogram your car it is essential to use the right tools and to know how to use them Incorrect programming could cause damage to the vehicles immobilizer system and prevent it from starting It is best to seek advice from a professional prior to attempting to reprogram a car key You can also purchase a kit that includes the key programmer a remote control key and transponder chip This will help ensure that you have everything you need to reprogramme your car key This method is more timeconsuming and requires knowledge of soldering and electronic devices