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How to Program a Car Key Modern cars come with more than just a single key to start the engine they also include a remote to lock and unlock doors These key fobs have to be programmed to work It is possible to preprogram some car keys by the owner but it is recommended to speak with a professional This will help prevent any possible damage to the computer system and also ensure that the new key functions properly How to Program a Key Before the turn of the 21st century the majority of cars had basic key systems Keys themselves were metal and featured grooves that corresponded to the internal parts of the ignition cylinder As technology advanced more and more automobile makers began to mix electronic and physical protocols to avoid theft These key systems are known as transponder keys or chip keys and are designed to make it more difficult for thieves to get into the vehicle The key chips inside the keys have a specific serial number which transmits a signal to the receiver inside your car When the signal is received it compares it to the code that is stored in the cars computer If the codes are compatible then the car will start If not it will not start at all This is one of the main reasons why you should always keep a spare key on your car especially if you have an electronic transponder Youll require specialized equipment to learn to program keys Youll need a blank key that is compatible with your car model and make These can be purchased at the dealership or through a locksmith but you must make sure that they are the correct ones If you use a key from another model it wont work To begin the process simply insert the new key into the ignition and switch it to the on position You will need to leave the new key in this position for around 10 minutes and 30 seconds Once the time has expired you can take out your key and check if the security indicator on your dashboard has gone off If it did not you will need to repeat the procedure for the third time Be aware that this method will only work on GM vehicles however it isnt completely secure If youre looking for a reliable and secure solution go to a locksmith or a dealer to have the car programmed with an embedded chip These professionals have the necessary tools and equipment to connect to your cars onboard diagnostics port and then make the change Keyless Entry Systems Keyless entry systems grant access to properties without the requirement for a physical ID They utilize sensors in conjunction with an onboard computer to provide security click through the next article allows you to control the system and monitor its activity from anywhere on your property and it eliminates the requirement for locks or keys The system can also detect lost or stolen cards and then deactivate them Additionally the most recent models are cloudbased and permit remote management and configuration Modern cars are equipped with keyless entry systems The system works by emitting radio signals that are received by the keyfob The signals are compared to the code that is stored in the computer of the car and if all is well the car will start to unlock If the signals do not match then the car wont start There are a variety of steps you can take to program your new key fob if its not already programmed Youll first need to make sure that all doors except the drivers door are locked Youll need to have the original key fob as well as any other devices you wish to program You can also try your local auto parts store because they might have the right programming tool for your car If none of these options work you will have to consult your owners manual or an expert locksmith Once you have the right tool follow the instructions of the manufacturer to begin changing the program of your key fob This process is often relatively quick and easy You might be told to put the new key in the ignition when all doors are shut and then press the button on the keyfob after a specific time The car may respond by reversing the door locks or emitting an audible chime which is a sign that the key has been successfully programmed A lot of locksmiths have tools that allow them to bypass the builtin EEPROM security on the cars key fob or remote However its an extremely risky option and has the potential of destroying the data on the computer in your car It is best to let an expert handle this task as theyll be able to minimize the chance of data corruption and make sure your keys are properly programmed Transponder Keys Transponder keys also known as chip keys come with a microchip built into the head of the key When the key is placed in the barrel of the ignition lock and then turned into the ON position the antenna ring transmits an electromagnetic energy blast through the transponder chip The chip absorbs this energy and then sends a radio frequency signal which contains an identification number The code is matched to the unique serial numbers that are stored in the computer system of the car This stops unauthorized attempts to begin the car as only the proper keys will be able to do so The technology is believed to be more secure than traditional car keys because it makes it difficult for thieves to hot wire a vehicle and get it started Its not foolproof and thieves have found ways to trick and defeat the system Therefore even vehicles with a transponder key are not safe from theft Depending on the make and model of your car depending on the make and model of your car you might be able to program a new transponder by yourself using a key programmer thats compatible with the car you own The key programmer should include an easytofollow guide to walk you through the process of programming your key Follow the steps and turn on the security light in your dashboard prior to starting your engine You can ask a professional locksmith to help you if you are not confident with a key programmer or if you own a car that has more advanced features such as remote head keys or intelligent keys They will have the tools and equipment required to cut a blank key delete the old one from the computer of the car and then program the new key to function properly This will save you time and money and will ensure that your cars security system functioning exactly as it should Additionally its much more secure than doing it yourself If you choose the incorrect key programming software or follow unofficial instructions and the data in your cars computer could be corrupted and the new key will not work Remotes If your car keys arent working you may need to reprogram them Its a straightforward process for most modern vehicles which use keyfobs Certain models are more complicated and require a special programming device which is normally available from the dealer or from auto locksmiths Fortunately most modern car manufacturers have improved their key systems to be more secure in order to reduce vehicle thefts The key system was designed in a way to prevent hotwiring which is using a key from another vehicle to start your cars engine This means that youll need at minimum two working key fobs for your vehicle in order to ensure that the process works Its essential to have at minimum two spare keys on hand Key fobs are equipped with electronic chips that transmit radio signals with the cars receiver The computer checks the code of the key with the database If the codes are the same the car will start If not the car will not start or fail to start Most of these electronic key can be programmed and replaced by an expert locksmith or dealer in the field with the right equipment The procedure should be fairly simple if you can find a lowcost key programmer on the internet or in an auto parts store Youll have to follow a specific set of steps that include inserting the key into the ignition turning it on without running the engine and then turning the key off Youll have to repeat this procedure a specific number of times within a specified time frame for your vehicle to enter programming mode The door locks will cycle or chime Some modern vehicles are capable of programming using a device connected to the onboard diagnostic port or EEPROM programming Unfortunately most of these tools are incredibly expensive making them unaffordable for the majority of car owners Many experts in the field recommend consulting with a professional auto dealership or locksmiths to program your keys