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Reprogramming Car Keys Transponder keys are said to be more secure for cars and are more difficult to copy by thieves. However, a key might need to be reprogrammed in the event that it is damaged or lost. You can change the programming of your key fobs at home, however you need to be aware of the proper procedure. It is essential to have these items to achieve the best results: Keys Almost all modern cars require some kind of transponder fob or transponder keys to operate, ensuring security and protection against theft. These keys must be programmed to the specific car and its systems by an authorized locksmith or dealer. They are costly to replace in the event of loss and you should keep extras handy. You can find replacement key fobs in online stores as well as many brick-and mortar auto shops. But how do you know that the key fob you bought is genuine? Can you tell whether it has been programmed to work with another vehicle or if it is able to be programmed to work with your car? If you want to program a new key the first step is to make sure that your car is operating. Insert the key that you wish to reprogramme into the ignition, but do not turn it. You will only have a couple of seconds before the car's system resets commands and then exits programming mode. This is why it is essential to move quickly and not wait between steps. To avoid this happening, turn off the engine. You can test the car's security system by turning the key to the “on” position, then back to the “off” position. The door locks should cycle, and you'll hear a chime signalling that the process was successful. Certain newer vehicles have rolling key technology, which stops thieves from using a stolen vehicle's key to start it. This feature is still susceptible to a technique dubbed 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 counter this, manufacturers have added a security feature called CAN bus protocol to stop hacking attempts. Certain manufacturers also employ special encryption on their key fobs that cannot be decoded with an easy program. These types of cars will need to be programmed by a professional, so you should only try this with someone who has experience with electronics. Refer to the manual for your car or go to the website of the manufacturer to find out how to program it. The steps are different depending on the type of vehicle. Transponder chips Car keys with transponder chips require a specific reprogramming to function. While reprogram car key can cut a new key for you, the real problem is to make it work in conjunction with your particular car. The key you reprogrammed needs to match the exact identification number of your vehicle otherwise it won't even start the engine. Transponder chips, used to prevent car theft, are a common feature of modern automobiles. The chip is a tiny microcircuit that transmits a radio-frequency signal when the ignition key is placed. The car then detects the signal and then starts the engine if it matches the original one that was programmed into the vehicle. The car will also shut down if a frequency is invalid. This makes it more difficult for novice car thieves to hot wire a vehicle and start it. The key and the chip are connected via a circuit board that includes an induction coil. When the key is put in the ignition, a magnetic field is created around the transponder. This produces a signal which is amplified by the coil which transmits it to the key's identification number. The key's identification number is then returned to the car and the engine will start if the identification number matches. There are several ways to program a transponder keys, however, all require an appropriate tool. These tools are available online or from most automotive locksmiths. They're not cheap, but they're essential for programming the chip in your car. You may also utilize a transponder that is reprogrammable that has been previously programmed for another vehicle. In this scenario, ensure that the key hasn't been damaged or the transponder is not altered in any way. To accomplish this, you'll need scanners or computers equipped with a USB port to scan the chip and determine its identity. Reprogramming an transponder's key is simple, however it requires special software and a scanning tool. It's best to ask an auto locksmith for assistance in case you're not an expert. Don't buy used keys since they may already be programmed and will not work with your car. EZ Installer Until recently, car owners who wanted to replace their keys were required to go to a dealer to have it electronically paired with the vehicle. It is because to make modern keys function they must be “paired”. This required expensive and complex equipment that was available only to dealers. The EZ Installer by Car Keys Express simplifies the process of pairing modern keys to vehicles for locksmiths and retailers. 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 runs an application that is mobile to provide simple to follow instructions. The EZ Installer works with a wide range of modern vehicles, including those that have proximity keys or push-button start. Visit the compatibility guide on Tom's website to determine if your vehicle is compatible. A money-back guarantee of 100% is offered if the device does not successfully program a key or remote purchased from Tom's for a vehicle compatible. Unlike traditional programming equipment that can cost retailers and key professionals thousands of dollars through typical per-key “token” charges, the EZ Installer Pro doesn't charge these fees at all which means it can be used as long as a retailer or key professional wants to keep it. The EZ Installer eliminates the need for expensive monthly service contracts and software updates. This lets retailers save money while providing their customers the same top quality service as OEM equipment. It also offers an industry-leading warranty that covers all hardware and software for the life of the product. Tools Locksmiths, auto mechanics, and owners of vehicles can utilize car key programming tools to create new keys for vehicles. These tools connect to the immobilizer of the vehicle to program new keys and remote controls. These tools can be used to create duplicate keys and to make keys cloned. These tools are an essential tool for anyone who owns a car. One of the most admired car key programming tools is the Autel Maxisys MS906BT. This scanner for vehicle diagnostics has advanced features that are OE-grade and is compatible with most of the top brands. It comes with an essential programming feature that allows you to backup current key data. It also resets the immobilizer or clear immobilizer fault code. The OTOFIX IM1 is an important tool for reprogramming car keys. This auto diagnostic scanner can read passwords for most major brands and comes with advanced features that are OE-level. It also has the ability to perform online calibration, customization, and reading of EEPROM. The tool is also equipped with a feature that allows it to bypass the PIN code of BMW and Mercedes. It can also read EEPROMs, car MCUs and CAN-EEPROMs for most major models. The XToolUSA bidirectional scanner is another popular choice to reprogramme vehicles. This is a wonderful tool for auto repair shops as well as locksmiths because it can read key codes and other data from all vehicles in just a few seconds. It also has a live test feature that allows you to find the problem quickly. There are a variety of ways to reprogram a car it is essential to select the appropriate tools and know how to utilize them. Uncorrect programming can cause damage to the immobilizer on the vehicle and stop it from beginning. It is best to seek advice from a professional prior to trying to reprogram a car key. You can purchase a kit that includes keys, a key programmer, remote control key and transponder chip. This will ensure that you have everything you need to reprogramme your car key. However, this method takes longer and requires a basic understanding of electronic circuits and soldering.