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Key Fob Replacement and Reprogramming - Why Your Car Won't StartMost cars are equipped with an immobilizer to prevent theft. If your vehicle won't start after inserting your key fob, it could be a problem with a transponder which isn't sending a security message to the immobiliser.This is a quick fix that any auto locksmith on the Gold Coast can do. Let's look at the various parts of your car's immobiliser and what you can do to get it fixed.BatteryIf you are working in the field of auto repair, it is important to be aware of your shop's earnings and cost-saving opportunities. One way to do this is to offer key fob replacement and reprogramming services to your customers. This will not only benefit your customers but will also boost the profits of your shop without subletting to the dealership.Typically, the key fob battery powers the remote opening and locking systems. The immobiliser is not powered by the key fob battery. The immobiliser is powered through the transponder that is located in the fob, key or instrument cluster. The chip transmits a code from the key or fob to the immobilizer unit of the car, which could be integrated into the PCM (power control module) or BCM (brake control module for brake control), instrument cluster, smart junction boxes, or standalone modules. The system will check the code to make sure that it is correct. If the code is incorrect, the system disables components that are crucial to start the car, such as the starter motor or ignition. The car will be nearly impossible to start if you don't have the correct key.Since its introduction the immobiliser has proven to be an extremely effective tool in reducing the theft of cars. Even so, thieves are constantly trying to get around these security measures. One of these strategies is an upcoming trend called the Kia Challenge on TikTok that demonstrated how easy it is to hot-wire a vehicle.The majority of insurance companies now factor in the use of an immobiliser when they calculate premiums, making it more appealing to shop for an automobile that has this feature. Even vehicles equipped with an immobiliser could be prone to problems. Fortunately, these problems are usually simple and inexpensive to solve. The majority times the issue is caused by an inactive or dead key fob battery. This can be determined by an instant diagnostic test. If the issue persists, then there might be other reasons for the car's behavior, such as electrical issues or a wiring issue. It's best to let a professional diagnose the problem and fix it.Transponder ChipA small electronic chip, referred to as a transponder, is built inside the head portion of your car keys. This technology was introduced in cars made after 1995. Also known as a 'chip key or a 'transmitter & responder key, it's designed to stop the engine from starting if another person has the same key. It works by sending radio signals from the key to the immobiliser system. If the code in the car's computer is in line with the signal transmitted by the key, it will disarm the immobiliser and allow the engine to begin.The key with a transponder can also be referred to as a "fob" or a "smart" key, as it is more difficult to duplicate than mechanical keys. With the help of special methods, it is possible to duplicate a standard car key but not transponder keys. Transponder chips are powered by an infrared signal, not battery power.To activate the transponder the ignition cylinder has to be in the ON position. The ring emits a burst IR energy that is received by a microchip inside the key. car remote key repair near me responds with a unique code to the immobiliser in your car. The car's computer compares the code stored in its memory with that from the transponder chip and if they match the engine will be able to start.If the immobiliser detects that an unauthorised transponder or key is being used, it will disable the engine and block any of its essential components from functioning. The car won't move if the engine is not working. It's easy for a criminal hot-wire it and drive off. This is a powerful way to deter crime, and is one of the reasons why it's important to have your car's key immobiliser repaired immediately you discover a fault with it. If you don't do this then the security light on your car will continue flashing and you will not be able to start it.Security LightThe immobiliser is powered by a small battery that sends an electrical signal to the transponder chip within your key. This anti-theft device prevents anyone from starting the car if they don't have the proper 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.This car immobiliser system is effective in stopping thieves but sometimes it can become out of in sync with the key or transponder chip. This could be due to interference or the system is too sensitive. If this is the situation, it might need to be reset. To do this, disconnect the battery. After 15 minutes, reinstall the battery and then restart the vehicle. This will reset the key system, so that it is ready to accept your keys again.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 car, it means that the code that is stored in the ECU does not match the chip in the key. This can happen if you have recently replaced your car key with a different one that isn't programmed to your vehicle or if you've had a bad swapped ECU.If this is the case, then it's time to talk to a professional for assistance and get the the transponder chip properly programmed to your vehicle. There is also the possibility that the system is not accepting the key because of an update or software issue. To test this, place your key in the ignition and switch it to ON but don't attempt to start the engine. The key should remain in this position for ten minutes. This will cause the security light to turn on and to go off. If it doesn't work, you'll need to repeat the procedure and wait another 10 minutes. Repeat the process three times, and the issue should be solved.ProgrammingA car immobiliser stops the car's engine from operating without a correctly programmed key or fob. It is based on a specific RFID microchip that cannot be duplicated and has its own serial number. The immobiliser will be disengaged in the event that it doesn't recognize the code. It's hard to beat.Modern cars have this system as standard. This makes it extremely 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 knows it's the correct key and that it doesn't have to been a compromise in the code. The system won't allow the car to start if the does not receive the correct code, and some models will even report back to the owner if someone tries to use a wrong fob or key.The system is not 100% secure, however. Some thieves have gotten around the immobiliser by using techniques like 'hot-wiring.' This involves crossing the wrong wires within the wiring of a vehicle to trick the ECU to believe that the proper key or fob is being used. This is a risky method and requires extensive expertise to avoid electrocuting yourself. Modern car thieves are also employing more sophisticated methods like Bluetooth or other specialized apps to steal a car's information and remotely control it remotely.Car owners will frequently see warning lights that indicate an immobiliser gone haywire. This can happen for various reasons, but one of the most frequent is a dead or defective battery on the key fob. This problem can be fixed by a simple replacement.If this isn't working, the transponder chip might be defective or mismatched with the ECU. This is harder to determine and fix since it may require an expert locksmith or a dealership. However, a car's immobiliser may also be damaged due to water intrusion, or even being removed from the fob or key. If any of these problems occur it's a good idea to visit the nearest garage or dealer to seek assistance.