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Key Fob Replacement and Reprogramming – Why Your Car Won't Start Currently, most vehicles come equipped with an engine immobilizer in order to stop car theft. If your vehicle won't start after inserting the key fob there could be a problem with a transponder chip that is not transmitting a security code to the immobiliser system. This is a quick fix for any auto locksmith in Gold Coast. Let's examine the different components of your vehicle's immobiliser and discover what you can do. Battery If you're working in the field of auto repair, it is important to focus on your shop's revenue and cost-saving opportunities. One method to achieve this is to provide key fob replacement and reprogramming services to your customers. This will not only benefit your customers, but will also boost your shop's profit without having to sublet to the dealership. Typically the battery for the key fob powers the remote locking and opening systems. The immobiliser isn't powered by the battery in the key fob. The immobiliser is powered by a transponder in the key, fob or instrument cluster. This chip transmits a passcode from the key or fob to the immobilizer module of the car, which can be integrated into the PCM (power control module), BCM (brake control module) instrument clusters, smart junction boxes, or standalone modules. The system checks the code to make sure it is correct. If the code is incorrect it will disable the components that are crucial to the start of the car, like the ignition or starter motor. The car will be impossible to start if you do not have the correct key. The immobiliser system has proven extremely effective at reducing car theft since its introduction. Even so thieves are always looking for ways to circumvent these security measures. One of these strategies is a recent trend known as the Kia Challenge on TikTok that demonstrated how easy it is to wire a vehicle. Insurance companies are now factoring in the use an immobiliser to calculate premiums. This makes it more appealing to purchase a vehicle with this feature. However, even cars that came factory-fitted with an immobiliser can experience problems with it. Fortunately, these issues are usually straightforward and affordable to fix. The majority times, a faulty immobiliser is the result of the dying or dead key fob battery. This can be confirmed with an instant diagnostic test. If the problem persists then it could be due to electrical issues or wiring issues. If this is the case, it's recommended to seek out a professional to diagnose and repair the problem. Transponder Chip In cars manufactured after 1995, a small electronic chip referred to transponder is embedded in the head of your car key. It is also known as a “chip key” or a “transmitter-responder” key. Its goal is to stop the engine from starting when someone else has a duplicate of your key. It works by sending radio signals from the key to the immobiliser system. If the code in the car's computer matches that signal transmitted by the key, it will disarm the immobiliser and allow the engine to start. The key that has a transponder is also referred to as a “fob” or a “smart” key, as it is more difficult to copy than a mechanical key. With the help of special methods, it is possible to copy a conventional car key but not a transponder key. Contrary to the central locking element remote of a conventional key which uses battery power, a transponder chip is powered by an infrared (IR) signal that is transmitted by the antenna ring on the ignition cylinder. To activate the transponder chip the ignition cylinder needs to be turned on. The ring emits a burst IR energy that is received by a microchip within the key. The chip then responds with an individual code to the immobiliser of your car. The car's computer compares the code stored in its memory with the one on the transponder and when the two codes match, it will start the engine. The immobiliser will shut down the engine when it detects an unauthorised transponder or key. It also blocks any vital components of the vehicle from functioning. The car won't move if the engine is not working. It is easy for a criminal to hot-wire it and then drive off. This is a powerful deterrent against crime and it is one of the reasons why it's important to have your car key immobiliser repaired when you spot any issue with it. If key repairs don't take this action and the security light on your car will keep blinking, and you won't be able to start it. Security Light The immobiliser makes use of a tiny battery to transmit an electrical signal to the chip that is in your key. This device is designed to prevent anyone from starting their car without the correct keys. If the system can't identify a digital serial number from the chip inside your key it will disengage the engine immobiliser and stop the car from starting. The car immobiliser is a great way to deter thieves, but it can occasionally be out of in sync. This could be due to interference or the system is too sensitive. If this is the case, it could be necessary to reset. To do this simply disconnect the battery. After 15 minutes, reconnect the battery and then restart the vehicle. This will reset the key system so that it is ready to accept keys once more. The security light is the car immobiliser's way of telling you that there is a problem with the system. If the light is on and you attempt to start your vehicle, it indicates that the code that is stored in the ECU does not match the chip inside the key. This could happen if have recently replaced your car key with a different one that has not been programmed to your vehicle or when you've had a damaged swapped ECU. If this is the situation, it's best to take your key or transponder chip to a professional to have them properly programmed for your vehicle. It's possible that your system isn't able to accept the key due to a software upgrade or glitch. To test this put your key in the ignition and turn it to the ON position but don't try to start the engine. Keep the key in this position for 10 minutes. The security light should come on, and then go off. If it doesn't, you'll need to repeat the process and wait for another 10 minutes. This should solve the issue if you repeat it three times. Programming The car immobiliser stops the engine from running if the fob or key is not programmed correctly. It is based on a specific RFID micro-chip that can't be copied and has its own serial number. The immobiliser will disengage when it is unable to recognize the code. It's difficult to beat. Modern cars are fitted with this security system by default. This makes it very difficult to wire a car or use a different key for starter. The system works by sending a code from the key fob to the ECU. The ECU then knows that it's the right key and that the code isn't compromised. The system won't allow the car to start when it doesn't receive the correct code. Some models even notify the owner when they attempt to use a wrong fob or key. However it isn't foolproof. Some thieves have bypassed the immobiliser by using techniques such as 'hot wiring.' This involves crossing the wrong wire in a vehicle in order to trick the ECU. But, click here to read is pretty risky and requires a lot of knowledge of how to accomplish it without cutting yourself. Modern car thieves are also employing more sophisticated methods such as Bluetooth or other specialized apps to steal a car's information and remotely control it. Car owners often see warning lights that indicate an immobiliser that has gone out of control. This could be due to various reasons but the most frequent reason is a defective battery in the keyfob. The issue can be solved by replacing the battery. If this doesn't work it could be because the transponder chip is defective or the ECU is not compatible. This is more difficult to diagnose and fix as it may require an expert locksmith or a dealership. However, a car immobiliser can be damaged by water ingress or even physically being removed from the fob or key. If you encounter any of these problems it is a great idea to visit the local car dealer or garage for assistance.