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Can smart key programming Program Your Own Car Keys? There are only a handful of automobiles on the market that allow you to program your own keys. However, it is extremely risky and could cause damage to the computer in your car. The transponder chip in the key creates digital signatures. 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 using the traditional car key. It transmits radio signals to the vehicle which is then used to activate the ignition and locking systems that are built into the car. The signal allows the vehicle's identification to be read so that it knows if you are close enough to be able to open the trunk and doors. The method of programming these systems could differ based on the model of vehicle and the manufacturer. Some manufacturers employ a simple RF (radio-frequency) method of reprogramming, while others require special equipment to access the system's internal memory. It is important to read and follow the steps with care in order to avoid a mistake or performing it incorrectly could cause the failure to program the new fob. Benefits of Keyless Entry For those who must frequently drive a fleet of cars, remote keyless entry offers many advantages over traditional keys. It is easy for drivers and saves them time and also reduces the chance of theft. It is also easier to manage fleets with a remote keyless system which integrates with vehicle management software. A keyless entry system also provides significant security advantages, as it's much more difficult to duplicate a digital key than a physical key. Most newer vehicles have an alarm system that warns the driver if the engine is running or operated by someone else. How to program the key fob of a key The first step to program a key fob is to make sure you have the correct type of key. Key fobs with blanks are available on the internet or at most auto dealerships. They must be designed specifically for the make and the model of the car to which they will be added. This information is available on the key fobs themselves or by searching for your vehicle's VIN. Once you have the right key, follow these steps to start programming mode: Step into your vehicle on the driver's side and close all doors, except for the driver's door. Insert and remove the ignition key several times until both hazard lights are flashing. This indicates that you are in programming mode and the vehicle is now ready to accept an additional fob. Repeat this process for each new fob you'd like to program. How do I program a keyless entry remote? Car key fobs are useful and convenient however, they can be a headache when they're not functioning properly. If you notice that yours is malfunctioning the first thing you should try is replacing the battery. If this isn't enough to fix the problem, you may need to take your vehicle to an expert. It is possible to program key fobs yourself according to the model and make of the vehicle. You do not need to take them to a dealer. However, it is important to note that not all vehicles support self-programming. You'll have to refer to your owner's manual or look up your vehicle online for detailed instructions. First, you will need to gather all of the fobs that you wish to program and have them nearby. Most vehicles erase previously programmed fobs during the programming process, so it is crucial to ensure that they are in the vicinity prior to starting. After that, you'll have to enter your vehicle and close all doors. Press and hold the button to lock on one of your new key fobs for a couple of seconds. You will then need to wait for your vehicle to respond to your request, typically by cycling the locks or chiming. Once you hear the locks cycle or a chime, you can then begin to program your additional fobs. Repeat the procedure for each fob you want to program, making sure that you do it within the time limit of the vehicle. Check the fobs after you have finished to ensure they function as intended. If the fobs are not functioning properly, you'll need to repeat the test or seek advice from a professional. If you're having problems with your Mercedes it may be necessary to take it to the Mercedes dealer to reprogram the keys. The reason for this is that programming Mercedes requires specialized equipment which the majority of people don't have. If you are able to find a local Eeprom locksmith, they may be able to help program your Mercedes key fob.