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Can You Program Your Own Car Keys?There are only a handful of cars on the market that allow you to program your own keys. This is a risky process that can damage the car's computer.The transponder chip on the key creates a digital signature. The car has a library of these signatures and matches them to start the vehicle.How do I program an entry system that is keylessA key fob allows you to lock and unlock your vehicle without using the traditional key. It transmits radio signals to the vehicle, which activate the locking systems on board and ignition. The signal allows the car's ID to be read, meaning that it can tell whether you are close enough to be able to open the trunk and doors.The systems can be programmed at home, however the process can vary 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's important to be sure to follow the steps carefully, as missing a step or doing it incorrectly can result in the inability to program the new fob.Benefits of Keyless EntryFor those who must frequently operate several cars remote keyless entry provides a number of advantages over traditional keys. It is convenient for drivers and can save them time and reduces the risk of theft. It is also easier to manage fleets with remote keys that integrates vehicle management software.The security advantages of keyless entry systems are also noteworthy, since it is much more difficult to duplicate the digital key than the physical one. Most newer vehicles have an alarm system that informs the driver if the engine is started or operated by a third party.How to Program a Fob FobThe first step to programming a key fob is to make sure that you have the correct type of key. Blank key fobs are available through the internet or from many automotive dealerships. They should be specifically designed for the make and the model of the vehicle to which they will be attached. This information is available on the fobs that you receive or by locating the vehicle's VIN.Once you have the right key, follow these steps to enter programming mode. Get into your car on the driver's side. Close all doors except the driver’s door. Insert and remove the ignition key multiple times until the hazard lights flash. This indicates that you are in the programming mode and your vehicle is now ready to accept the new fob. Repeat the process for all of the new fobs you wish to program.How to Program a Keyless Entry RemoteThey're convenient and useful but they can be a headache when they aren't working properly. Replace the battery if the one you have isn't working. This will usually fix the problem, but if that doesn't work then you should think about taking your car to professional.While the process varies depending on the make and model of the vehicle however, it is possible to program your own key fobs, without needing to take them to a dealer for assistance. It is important to remember that not all vehicles are programmable by themselves. You'll need consult the owner's manual for your vehicle or search on the internet for specific directions.You will need to first gather all the fobs that you would like to program, and keep them in a safe place. Most vehicles will erase all previously programmed fobs during the programming process, so it is crucial to have them nearby before starting. After that, you'll have to enter your vehicle and close all of the doors. Press and hold the button to lock on one of your new key fobs for several seconds. You will need to wait until your car responds to the request. This is usually accomplished by cycling the locks, or emitting an audio. When you hear a chime or locks are cycling, you may start programming the additional fobs.Repeat car key programming for each fob you have to program, making sure that you do it within the specified time frame of the vehicle. Once you are done check the fobs to make sure they work properly. If the fobs are not functioning properly, you'll need to repeat the test or seek advice from an expert.If you're having problems with your Mercedes it may be necessary to take it to a Mercedes dealer to reprogram the keys. The reason is that reprogramming Mercedes requires special equipment, which the majority of people don't have. If you are in the market for a local Eeprom locksmith, they might be able to assist you program your Mercedes key fob.