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How to Program a Car Key Modern cars come with more than just a key that will start the engine They also come with a remote control that can lock or open doors These key fobs must be programmed to work It is possible to program certain keys for cars by the owner but it is best to consult an expert This will help protect against any possible damage to the cars computer system and also ensure that the new key is working properly How do you program a key The majority of cars had basic key systems prior to the turn of 21st century Keys were made of metal and featured grooves that match the internal components in the ignition cylinder However as time progressed and technology advanced more and more automobile manufacturers began blending physical and electronic protocols to protect against theft These key systems are called transponder keys or chip keys and are designed to make it harder for thieves to get into the vehicle The key chips come with a unique serial code that transmits a message to the receiver in your car The signal is compared to the computer of the car when it is received If the codes are similar your car will start If not it will not start at all This is one of the main reasons to keep a spare key on your car especially when you use an electronic transponder Youll require special equipment to be able to program keys Youll also require the blank key that matches your specific model and make You can purchase these at a locksmith or a car dealership but its essential to purchase the correct keys If you try to use a key from another brand it will not work To start the process you need to insert the new key into the ignition and turn it to the on position Youll need to leave the key in this position for around 10 minutes and 30 seconds Once the time is up you can remove the key and check whether the security light on your dashboard was gone If it did not you will need to repeat the process three times This method is only compatible with GM vehicles and isnt 100 secure If youre seeking a more secure and reliable method you should seek out an expert locksmith or dealer to have your car programmed with chip They will have the tools and equipment to connect to your cars onboard diagnostics port and then make the change Keyless Entry Systems Keyless entry systems allow access to properties without the need for a physical ID They utilize a combination of sensors and an onboard computer to provide security It is possible to manage and monitor the system from anywhere in the property Keys and locks are not required The system can also identify stolen or lost cards and disable them The most recent models also permit remote management and configuration and are cloudbased Modern cars come with keyless entry systems To make this work it emits radio signals which are picked up by a specific key fob The signals are then compared to the correct code in the cars computer and when everything is in order the car will unlock The car will not start when the signals arent identical If your key fob isnt already programmed it is possible to follow a few steps to program it The first step is to make sure that all doors are locked with the exception of the drivers side Youll need the original key fob along with any other devices you wish to program You can also check your local auto parts shop to see if theyve got the right tool for your vehicle If none of these methods work youll need to consult your owners manual or an expert locksmith Once you have the proper tool You can begin the reprogramming of your key fob by following the manufacturers instructions The process is usually quick and easy For example you might be directed to insert your new key into the ignition while keeping all doors shut and then press the button on the key fob within a brief time period The car may then respond by turning off the door locks or generating a chime to indicate that the key has been successfully programmed Many locksmiths use special tools to get around the EEPROM security built into your cars remote or key fob This is a risky method and could cause data corruption on your cars computer This should be left to a professional who can minimize the risk of data corrupting and ensure that your keys are correctly programmed Transponder Keys Transponder keys also referred to as chip keys have an embedded microchip in the head of the key The antenna ring transmits electromagnetic energy to the transponder when the key is put in the barrel of the ignition lock The chip absorbs this energy and then sends a radio frequency signal which contains an identification number The code is matched to the unique digital serial numbers in the computer of the car This helps prevent unauthorized attempts to start the car since only the right key will be able to do so This technology is believed to be more secure than traditional car keys because it makes it much more difficult for thieves to hot wire a vehicle and start it But its not foolproof and thieves have found ways to evade and defy the system so that even vehicles with transponder keys are not safe from theft You may be able program a transponder key on your own with an instrument that works with your vehicle The key programmer should include an instruction manual that will guide you through the process of programming your key Follow the directions and turn on the security lights on your dashboard before you start your engine If youre not comfortable programming keys or if your vehicle includes more advanced features such as remote head keys or smart keys you can go to a professional locksmith assistance They will have the tools and equipment needed to cut an uncut key erase the old one from the computer of the car and then program the new key to work correctly This will save your time and money and will ensure that your cars security system operating exactly as it should Plus its a lot more secure than doing it yourself If automotive key programming near me use a 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 dont work it could be necessary to reprogram them This is a simple procedure for most modern vehicles that have key fobs Some models are more intricate and require a specific programming device which is normally available at the dealer or from auto locksmiths To prevent theft of vehicles modern car manufacturers have increased the security of their key systems The key system is designed to stop hotwiring which is using a key from another vehicle to start your cars engine As a result youll require at minimum two working key fobs for your vehicle to be able to use the system This is one of the main reasons why its recommended to have at least one spare key available The key fobs have electronic chips that transmit radio signals with the cars receiver The computer examines the code of the key with the database If the codes are the same the car will be able to start If the codes dont match the car wont start or will remain dead Most of these electronic key can be programmed and replaced by a professional locksmith or dealer in the field with the appropriate equipment The process is fairly simple if you can find a cheap key programmer on the internet or at an auto parts store Youll need to follow a set of steps that include inserting the ignition key turning it on without starting the car and then turning off the key You will need repeat the steps a certain number of times in a specified time frame to get your vehicle into programming mode The door locks will cycle or chime Certain modern vehicles can only be programmed with the help of a tool thats connected to the onboard diagnostics port or an EEPROM programming procedure Unfortunately the majority of these devices are very expensive making them unaffordable for most car owners Most car experts recommend consulting a reputable auto dealership or locksmith to program your keys