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Can You Program Your Own Car Keys? There are only a few cars that are available allow you to program keys yourself. However, doing so is extremely risky and could cause damage to your car's computer. The transponder chip on the key creates an electronic signature. The car's memory holds these signatures and matches them up for the car to start. How to program a Keyless Entry System A key fob allows you to lock and unlock your car without using traditional keys. It transmits radio waves to the vehicle, which trigger the locking system onboard and ignition. The signal also allows the vehicle to scan the ID of the key fob to determine whether or not you're close enough to operate the trunk and doors. These systems can be programmed at home, however the procedure may differ between different manufacturers and vehicles. Some manufacturers use a radio-frequency (RF) method of reprogramming, while others require special equipment to access the internal memory of the system. It is important to read the instructions and follow them carefully. Incorrectly or executing it incorrectly could result in the new fob not being programmed. Benefits of Keyless Entry Remote keyless entry is an excellent option for those who drive lots of vehicles. It is easy for drivers and can save them time, while reducing the risk of theft. In addition it is usually easier to manage fleets when using remote keyless entry systems that integrates vehicle management software. The security advantages of a keyless entry system are also notable, as it is much harder to duplicate a digital key than a physical one. Most newer vehicles have an alarm system that warns the driver if the engine is started or operated by someone else. How to Program a Fob Fob The first step in programming the key fob is to make sure that you have the correct type of key. Key fobs that are blank can be purchased on the internet or at many dealerships for cars. They must be made specifically for the make and the model of the vehicle to which they will be attached. This information can be found on the key fobs themselves or by searching for the vehicle's VIN. Once you have the right key Follow these steps to enter the programming mode. Get into your car on the driver's side. Close all the doors, except for the driver's. Insert and remove the key from the ignition several times until the hazard light flash twice. This indicates that you're in programming mode and the vehicle is now ready to accept the new fob. Repeat see this for each new fob you wish to program. How do I program a keyless remote They're useful and convenient but they can be a headache if they don't work correctly. If you notice that yours is malfunctioning the first thing you should try is replacing the battery. If this isn't enough to solve the issue then you might need to take your vehicle to an expert. It is possible to program key fobs on your own, depending on the model and make of the vehicle. It is not necessary to take them to an authorized dealer. It is important to keep in mind that not all cars are programmable by themselves. You will need to go through the owner's manual of your vehicle or search for specific instructions. It is essential to collect all the fobs you would like to program, and keep them close by. Most vehicles will erase all previously programmed fobs during the programming process, which is why it is essential to ensure that they are in the vicinity prior to starting. You'll then have to get into your vehicle and shut all the doors. Press and hold the lock key on one of your new keys fobs for a couple of minutes. Then, you'll need to wait for your car to respond to the request, typically by cycling the locks or emitting a chime. When you hear the locks cycling or a chime, you can then begin programming your additional fobs. Repeat the process to program each fob. Be sure to follow the time limit specified by the vehicle. Examine the fobs after you have finished to ensure they function as intended. If the fobs are not functioning correctly, you will need to repeat the test or consult a professional. If you're having issues with your Mercedes it could be necessary to bring it to a Mercedes dealer to program the keys. This is because reprogramming a Mercedes requires special equipment that most people do not have access to. However, if you are able to find a local Eeprom locksmith, they may be able to help to program your Mercedes key fob.