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Can You Program Your Own Car Keys? There are a handful of vehicles available that allow you to program your own keys. This is a risky procedure that could cause damage to the computer in your car. The transponder chip on the key creates a digital signature. The car's database of these signatures, and then matches them to start the car. How do program car keys program the keyless entry system With a key fob, you can lock and unlock your vehicle without the use of the traditional car keys. It transmits radio waves to the vehicle which trigger the onboard locking systems and ignition. The signal also allows the car to scan the ID of the key fob and determine whether or not you are close enough to open and operate the doors and trunk. These systems can be programmed at home, but the procedure can differ between different manufacturers and vehicles. Some manufacturers use a radio-frequency (RF) method for reprogramming and others require specialized equipment to access the internal memory of the system. It is essential to be aware of the instructions and follow them closely. If you miss a step, or executing it incorrectly could result in the new device not being properly programmed. Keyless Entry Benefits Remote keyless entry is an excellent option for those who own lots of vehicles. It is convenient for drivers and can save them time, while reducing the risk of theft. Furthermore it is usually easier to manage fleets when using a remote keyless entry system with integrated vehicle management software. The security benefits of keyless entry systems are also noteworthy, since it is much harder to duplicate keys that are digital than a physical one. The majority of newer vehicles come with an alarm system that informs the driver if the engine is running or operated by a different person. How to Program a Key Fob To program a keyfob you must first ensure that you have the correct type of key. Key fobs in blank form are available online or at a variety of dealerships. However, they must be specifically designed for the model and make of the vehicle you wish to add them. This information is available on the fobs that you receive or by searching for the vehicle's VIN. Once you have the right key, perform the following steps to enter programming mode: Get inside your vehicle on the driver's side and shut all the doors, with the exception for the driver's door. Insert and remove the ignition key multiple times until the hazard lights are both flashing. This means that you are in the programming mode and your vehicle is now ready to accept a new fob. Repeat the process for each of the new fobs that you wish to program. How to program a keyless entry remote? Car key fobs are handy and convenient however, they can be a hassle when they're not functioning properly. Replace the battery if yours is not functioning. This is usually able to fix the problem, but if it doesn't then you should think about taking your vehicle to professional. While the process is different based on vehicle make and model however, it is possible to program your own key fobs, without needing to take them to a dealer for assistance. It is important to keep in mind that not all vehicles are self-programmable. You will need to consult the owner's manual for your car or go on the internet for specific directions. First, you will need to gather all the fobs that you wish to program and have them in a convenient location. It is crucial to make sure that you have all the fobs you wish to program close by before you begin. Then, you'll need to get inside your vehicle and shut all of the doors. Press and hold the lock button on one of your new key fobs for several seconds. You'll then have to wait for your car to respond to the request, typically by cycling the locks or chiming. When you hear a chime, or the locks are cycling, you may begin programming your additional fobs. Repeat the process for each fob. Be sure to adhere to the time limit specified by the vehicle. Test the fobs once you have finished to ensure they function as intended. If the fobs do not perform as expected, you may need to repeat the procedure or seek out a professional. If you're having problems with your Mercedes it may be necessary for you to take it to the Mercedes dealer to program the keys. This is because the process for programming a Mercedes requires special equipment that many do not have access to. If you are able to find a local Eeprom locksmith, they might be able to help program your Mercedes key fob.