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Can You Program Your Own Car Keys? There are only key reprogramming that are available allow you to program keys yourself. However, doing so is very risky and can cause damage to your car's computer. The transponder chip in the key creates an electronic signature. The car's database of these signatures and matches them to start the car. How to program a keyless entry system With a key fob, you can lock and unlock your vehicle without a traditional car key. It transmits radio waves to the vehicle, that activate the onboard locking systems and ignition. The signal allows the car's identification to be read, so that it can tell whether you are close enough to operate the trunk and doors. The systems can be programmed at home, but the procedure may differ between manufacturers and vehicles. Some manufacturers use a radio frequency (RF) reprogramming technique and others require specialized equipment to access the internal memory of the system. It's important to read and follow the steps carefully in order to avoid a mistake or performing it incorrectly could result in the inability to program the new fob. Benefits of Keyless Entry Remote keyless entry is an excellent option for those who drive a lot of cars. It is easy for drivers and helps them save time and also reduces the chance of theft. Furthermore, it is often easier to manage fleets when using remote keyless entry systems that integrates vehicle management software. The security benefits of keyless entry systems are also noteworthy, since it is much harder to duplicate a digital key than a physical one. The majority of newer vehicles come with an alarm system that warns the driver when the engine is running 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 kind of key. Key fobs in blank form are available online or at most automotive dealerships. However they must be designed for the make and model of the vehicle to which you wish to add them. This information can be found on the key fobs or by searching for the vehicle's VIN. Once you have the correct 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. Remove the key from the ignition numerous times until the hazard light flash twice. This means that you are in program and your vehicle is now ready to accept a brand new key fob. Repeat this procedure for every new fob you want to program. How do you program a Keyless Entry Remote Car key fobs are useful and practical however they can be a hassle in the event that they're not working correctly. If you notice that yours is malfunctioning the first thing to try is replacing the battery. This will usually fix the issue, but if not, you should consider taking your car to professional. It is possible to program key fobs yourself dependent on the model and make of the vehicle. You don't have to bring them to dealers. It is important to keep in mind that not all vehicles are self-programmable. You will need to go through the owner's manual of your vehicle or go for specific instructions. You will need to first collect all the fobs you want to program and keep them close by. Most vehicles erase all previously programmed fobs during the programming process, so it is crucial to ensure that they are in the vicinity prior to starting. You'll then have to get into your vehicle and close all the doors. Press and hold the button to lock on one of your new key fobs for a few minutes. You'll have to wait until your vehicle responds to your request. This is usually done by cycling the locks, or emitting a sound. When you hear the locks cycle or sound, you can begin programming your additional fobs. Repeat the process for each fob you want to program, ensuring that you do so within the specified time frame of the vehicle. After you've completed the program 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 consult a professional. If you have problems with your Mercedes it may be necessary to take it to the Mercedes dealer to program the keys. This is because programming the keys of a Mercedes requires special equipment that the majority of people do not have access to. If you are in the market for a local Eeprom locksmith, they may be able to help you programme your Mercedes key fob.