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How to Program a Car Key Modern cars come with more than just a key to start the engine they also come with a remote that can lock and unlock doors These key fobs must be programmed to work Certain keys for cars can be preprogrammed by the owner himself but its best to consult with a professional This will help to avoid any damage to the cars computer system and also ensure that the new key works properly How to program the key The majority of cars had basic key systems prior to the turn of the 21st century The keys themselves were just metal and featured grooves that were connected to the internal parts of the ignition cylinder As time went on and technology improved and improved automobile manufacturers began to combine electronic and physical protocols to prevent theft Key systems like these also known as transponder keys or chips keys are designed to make it more difficult for thieves to open a vehicle reprogram car key contain an unique serial number which transmits a signal to the receiver inside your car When the signal is received it is compared to the code that is stored in the cars computer If the codes are similar the car will begin to begin to start If the codes arent compatible your vehicle wont start at all This is why you should keep an extra car key particularly if your system is transponderbased Youll need special equipment to learn to program keys Youll need a blank key that is compatible with the cars model and make They can be purchased from an auto dealership or from a locksmith but you must make sure that they are the right ones If you use a key that is for another model it wont function Start the process by inserting the new key in the ignition and turning it to on Youll need to keep the new key in this position for approximately 10 minutes and 30 second Once the time has expired you can take out your key and verify that the security indicator on your dashboard has gone out If it didnt go out then youll need to repeat the process three times Keep in mind that this method can only work on GM vehicles and its still not foolproof If youre seeking a more secure and reliable option you should visit a professional locksmith or dealer to have your car programmed with chip They have the tools and equipment to access your cars onboard diagnostics port and make the change Keyless Entry Systems Keyless entry systems permit access to property without the requirement for a physical credential Security is achieved through the combination of sensors and an onboard computer This lets you control the system and monitor its activity from any place on the property and does away with the need for locks or keys The system is also able to detect and deactivate lost or stolen cards In addition the latest models are cloudbased and permit remote management and configuration Modern cars come with keyless entry systems This system works by emitting radio signals that 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 in the event that the signals are not the same If your key fob isnt already programmed it is possible to follow a few steps to program it First youll need to ensure all the doors are locked except for the drivers side Youll also require the original key fob and any other accessories you want to program You can also visit your local auto parts shop to see if they have the appropriate tool for your vehicle If these steps dont work you will need to consult your owners manual or a professional locksmith Once you have the right tool follow the manufacturers instructions to begin changing the program of your key fob The process is typically quick and easy For instance you may be directed to insert your new key into the ignition while keeping all doors closed and then press a button on the key fob within a short time frame The car may respond by cycling door locks or emitting an audible chime as a sign that the key has been successfully programmed Many locksmiths use special tools to get around the EEPROM security that is built into the remote of your car or key fob However this is a risky method and has the potential of destroying the data on your cars computer Its best to have an expert handle this because they will be able to reduce the risk of data corruption and ensure that your keys are programmed correctly Transponder Keys Transponder keys are also referred as chip keys They are equipped with embedded microchips in the head of the keys When the key is inserted into the ignition lock barrel and turned to ON the antenna ring emits a burst of electromagnetic energy through the transponder chip The chip absorbs the energy and then transmits a radio frequency signal that includes an identification code The code is matched to the unique serial numbers that are stored in the computer system of the car This stops any attempts by anyone else to start the car as only correct keys will be able This type of technology is thought to be more secure than a conventional car key because it makes it more difficult for a thief hot wire the vehicle and start it Its not foolproof and thieves have found ways to evade detection and defeat the system So even cars with transponder key are not safe from theft Depending on the make and model of your car you may be capable of programming a new transponder key yourself using a key programmer thats compatible with the car you own The key programmer should come with a stepbystep guide that will walk you through the procedure of programming your key Once you have your key and a key programmer follow the directions carefully and make sure the security light on your dashboard is turned ON before turning your engine ON You can ask a professional locksmith to help you if you are not confident using a key programmer or if you own a car that has more advanced features such as remote head keys or intelligent keys Theyll have the appropriate tools and equipment to cut your blank key erase your old one from the cars computer and then program the new one so that it will work correctly This will save you time and money and will ensure that your cars security system functioning as it should Plus its a lot more secure than doing it yourself Utilizing the wrong key programming software or following unofficial guidelines could corrupt the information in the vehicles system and result in the new key not functioning Remotes If your car keys dont work it could be necessary to change the programming Its a simple procedure for the majority of modern cars that use keyfobs However certain models are more complex and require programming with the aid of an additional device thats typically available from a dealer or auto locksmiths To prevent theft of vehicles Modern car makers have enhanced the security of their key systems The key system was designed in a way to prevent hotwiring which is the act of using a key from another vehicle to start the engine of your vehicle Therefore youll require at minimum two working key fobs for your vehicle to make the process work This is one of the reasons why its a good idea to always have at least one spare key on hand The keys have electronic chips in them that communicate with the cars receiver using radio signals The computer examines the code of the key with the database If the codes match the car will be able to start If not the vehicle will remain dead or refuse to start Fortunately the majority of electronic keys can be replaced and programmed by an experienced auto dealer or a locksmith equipped with the proper equipment The process is fairly simple if you can find a lowcost key programmer on the internet or in an auto parts store Youll need to follow a setup that includes inserting the ignition key turning it on without starting the car and then turning off the key Youll have to repeat this procedure a specific number of times within a specific time frame for your vehicle to enter programming mode The door locks will cycle or chime Certain modern vehicles are only programmable with a tool connected to the onboard diagnostic port or EEPROM programming The majority of these tools are very expensive and therefore unaffordable by most car owners So many experts in the field recommend that you consult with an expert locksmith or auto dealer for key programming services