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How to Program a Car Key Modern cars have more than a key to start the engine, they also include a remote to lock and unlock doors. mobile car key programmer must be programmed in order to function. Certain keys for cars can be programmed by the owner, however it is recommended to consult a professional. This will avoid any damage to the computer system of the vehicle and ensure that the key functions correctly. How to program a key The majority of cars had basic keys systems prior to the turn of the 21st century. The keys themselves were just metal and had grooves that were connected to the internal parts of the ignition cylinder. However, as time progressed and technology advanced as it did, car manufacturers began blending physical and electronic protocols to prevent theft. These key systems are referred to as transponder keys or chip keys, and are designed to make it difficult for thieves to start the vehicle. The key chips contain an unique serial number that transmits a message to the receiver in your car. The signal is compared with a code in the car's computer when it is received. If the codes match then your car will begin. If the codes don't match, then your car will not even start. This is why you should keep an extra car key especially if the system is based on transponders. If you're looking to learn how to program keys, you'll need certain equipment. You'll also need to purchase a blank key for your particular model and make. They can be purchased from the dealership or through a locksmith but you must make sure that they are the right ones. If you use a key for another model, it will not work. Begin by putting the new key into the ignition and turning it “on”. You'll need to keep the new key in this position for about 10 minutes and 30 second. After the time has expired you can take out the key and observe whether the security light on your dashboard went out. If not then you'll have repeat the process the third time. This method is only compatible with GM vehicles and it's not completely secure. If you want a more secure and reliable option, you can visit a locksmith or a dealer to get your car programmed with an embedded chip. They will have the tools and equipment needed to access your car's onboard diagnostics port and make the change. Keyless Entry Systems Keyless entry systems give property access without requiring an actual credential. They make use of a combination of sensors and an onboard computer for security. It is possible to control and monitor the system from any place within the property. Keys and locks are not required. The system can also detect stolen or lost cards and deactivate them. The newest models also allow remote management and configuration as well as are cloud-based. Modern cars are equipped with keyless entry systems. The system works by sending radio signals which are picked up using the keyfob. The signals are then compared to the code that is stored in the computer of the car and if everything is well the car will start to unlock. The car will not start if the signals are not identical. There are a variety of steps you can take to program your new key fob if it's not programmed yet. The first step is to make sure that all doors are locked, with the exception of the driver's side. You'll need the original key fob along with any extras that you want to program. You can also try the local auto parts store, as they may have the appropriate programming tool for your car. If these steps don't work, you'll need to check the owner's manual, or an expert locksmith. Once you have the correct tool, you can follow the instructions of the manufacturer to begin changing the program of your key fob. This procedure is usually quick and easy. For instance, you could be asked to insert your new key into the ignition while keeping all doors closed and then press an appropriate button on the fob within a brief time. The car might then respond by adjusting the door locks or emitting a sound to signal that the key has been successfully programmed. Many locksmiths are equipped with special tools that permit them to bypass the built-in EEPROM security on the car's key fob or remote. This is a dangerous method and can corrupt the data on your car's computer. This is best left to a professional, who can lower the chance of data corrupting and ensure that your keys are correctly programmed. Transponder Keys Transponder keys are also referred as chip key. They are equipped with embedded microchips in the head of keys. The antenna ring transmits electromagnetic energy to the transponder whenever the key is put in the barrel of the ignition lock. This energy is absorbed by the chip, which then transmits an audio frequency signal that contains an identification code that matches up to the unique serial number of the car's computer system. This prevents an unauthorized attempt to start the car, since only the right key will be able to start the car. This technology is thought to be more secure than a conventional car key because it makes it difficult for a criminal to “hot wire” the vehicle and then start it. However, it's not foolproof and thieves have discovered ways to trick and defeat the system – which means that even cars equipped that have transponder keys aren't safe from theft. Depending on the brand and model of your vehicle You may be able to program a new transponder key by yourself with a key programer that is compatible with your particular car. The key programmer should come with a step-by-step guide that will guide you through the process of programming your key. Follow the directions and switch on the security light on your dashboard prior to beginning your engine. If you're not comfortable the use of a key programmer or if your vehicle includes more advanced features such as remote head keys or smart keys, you can go to a professional locksmith for assistance. They'll have the appropriate tools and equipment to cut your blank key, delete your old one from your computer in your car, and then program the new key so that it works correctly. This will save you money and time, and keep your car's safety system working exactly as it should. It is also safer than doing it yourself. Using the wrong key programmers or following unofficial guidelines could alter the information stored in the vehicle's system and result in the key not functioning. Remotes It is possible to change the programming of your car keys if they aren't working. It's an easy process for most modern cars which use keyfobs. However, certain models are more complex and require programming with the aid of a special device that's usually available from the auto locksmith or dealer. To reduce vehicle thefts Modern car makers have increased the security of their key systems. The key system is designed to avoid hot-wiring (the practice of using the key of another vehicle to start the engine) and other similar methods. This means that you'll require at minimum two working key fobs for your vehicle to make the process work. It's essential to have two spare keys available. The key fobs have electronic chips in them that communicate with the car's receiver via radio signals. The car's computer then compares the code on the key to the one stored in its database. If the codes are the same the car will begin. If the codes don't match then the car will not start or remain dead. Fortunately, the majority of electronic keys can be programmed and replaced by an expert auto dealer or a locksmith equipped with the proper equipment. If you're able to find a cheap car key programmer on the internet or in an auto parts store, the process will be relatively simple. You will need to follow a set of instructions which include inserting the ignition keys, turning it on without actually starting the vehicle, and then shutting off the key. You'll have to repeat this a certain number of times within a certain time frame for your vehicle to enter programming mode. The door locks will cycle or a chime will sound. Certain cars of the present can only be programmed with the aid of a device that is connected to the diagnostics port on the car's motherboard or an EEPROM programming process. Unfortunately, most of these tools are extremely expensive, and therefore unattainable for most car owners. Most car experts recommend consulting a reputable auto dealership or locksmiths to program your keys.