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Can You Program Your Own Car Keys? Only a few vehicles on the market allow you to program keys by yourself. This is a risky procedure that can damage the car's computer. The transponder chip inside the key creates a digital signature. The car's memory holds these signatures and matches them for the car to start. How to program a keyless entry system A key fob allows you to lock and unlock your car without having to use a traditional key. It transmits radio waves to the vehicle, which trigger the locking systems on board and ignition. The signal also allows the vehicle to identify the key fob's ID to determine whether or not you are close enough to open and operate the trunk and doors. These systems can be programmed at home, however the procedure may differ between different manufacturers and vehicles. Some manufacturers employ a simple RF (radio-frequency) method of reprogramming, while others require specialized equipment to access the system's internal memory. It is essential to read the instructions and follow them closely. Incorrectly or executing it incorrectly could cause the new fob not being reprogrammed. Benefits of Keyless Entry Remote keyless entry is a fantastic alternative for those who drive lots of vehicles. It saves time and provides an improved level of convenience for drivers and reduces the possibility of theft. It can also be easier to manage fleets using remote keys which integrates with vehicle management software. The security advantages of keyless entry systems are also notable, as it is much harder to duplicate a digital key than the physical one. In addition, most modern vehicles come with an alarm that alerts the driver of any unauthorized attempts to start or operate the engine. How to program the key fob The first step to program the key fob is to make sure that you have the right type of key. Blank key fobs are available through the internet or from many automotive dealerships. They must be made specifically for the make and the model of the vehicle to which they are to be fitted. This information is available on the fobs for keys or by searching for your vehicle's VIN. Once you have the correct key Once you have the correct key, follow these steps to enter programming mode. Enter your vehicle on the driver’s side. Close all doors, except for the driver's. Insert and remove the ignition key several times until both hazard lights are flashing. This indicates that you're in the programming mode and your vehicle is ready to accept a new fob. Repeat this procedure for every new fob you want to program. How do I program a keyless entry remote? Car key fobs are handy and practical, but they can also be a hassle in the event that they're not working properly. If see this page notice that yours is malfunctioning the first thing to try is replacing the battery. This usually resolves the problem, but if it doesn't, you should consider taking your vehicle to professional. It is possible to program key fobs by yourself dependent on the vehicle model and make. You don't have to take them to a dealer. It is important to keep in mind that not all cars can be programmed by themselves. You will need to read the owner's manual for your car or go on the internet for specific directions. You will need to first gather all the fobs that you want to program and keep them close by. Most vehicles will erase all previously programmed fobs during the program process, which is why it is essential to keep them in place prior to starting. After that, you'll have to enter your vehicle and shut all of the doors. Press and hold the lock key on one of your new key fobs for a couple of seconds. You will need to wait until your vehicle responds to your request. This is usually done by turning the locks on and off, or emitting a sound. If you can hear the locks cycle or buzz, you are able to begin to program your additional fobs. Repeat the process for each fob you have to program, making sure you do so within the specified time frame of the vehicle. Once you are done check the fobs to make sure they work properly. If the fobs don't perform as expected, you may require a repeat of the process or seek out an expert. If you have problems with your Mercedes it may be necessary to take it to a Mercedes dealer to program the keys. The reason for this is that the process of reprogramming Mercedes requires special equipment, which the majority of people don't have. If you find an Eeprom Locksmith in your area, they could be willing to help you programme the Mercedes key fob.