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Key Fob Replacement and Reprogramming – Why Your Car Won't Start Nowadays, all vehicles are equipped with an engine immobilizer to protect against theft of cars. If your vehicle will not start after inserting your key fob, it could be a problem with a transponder which isn't sending a security signal to the immobiliser. This is a quick fix that any auto locksmith on the Gold Coast can do. Let's examine the different parts of your car's immobiliser and what you can do to fix it. Battery If you are involved in the auto repair industry, it is important to be aware of your shop's earnings and cost-saving opportunities. You can accomplish this by providing key fob replacements and reprogramming 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 repair car key near me locking and opening systems. The immobiliser isn't powered by the key fob battery. Instead, the immobiliser relies on the transponder chip located on the fob or key. This chip transmits a code to the car's immobilizer device which can be integrated into the PCM, BCM, instrument cluster smart junction box, or standalone module. The system then checks the code to ensure that it is correct. If the code is not correct it will disable the elements that are crucial to starting the car, such as the ignition motor or starter motor. This will make the car almost impossible to start without the correct key. Since its inception, the immobiliser has been an extremely effective tool in decreasing car theft. However thieves are always trying to get around these security measures. One of these strategies is an upcoming trend called the Kia Challenge on TikTok that showed how easy it was to connect a vehicle with hot wires. The majority of insurance companies now factor in the use of an immobiliser in calculating premiums, which makes it more attractive to buy a car that already has this feature. Even vehicles equipped with an immobiliser may be prone to problems. These problems are often easy and inexpensive to solve. Most of the time, a faulty immobiliser is the result of the dying or dead key fob battery. This can be determined by an instant diagnostic test. If the issue persists, it could be due to electrical problems or wiring issues. If this is the case, it's best to consult a professional for a diagnosis and fix the issue. Transponder Chip A tiny electronic chip, referred to as transponder, is incorporated inside the head portion of your car keys. The technology was introduced in vehicles manufactured after 1995. Also known as a 'chip key or a 'transmitter & responder key, it is designed to prevent the engine from starting if someone else has an exact copy of your car key. It works by sending an audio frequency signal from the key to the immobiliser system of your car. If the code on the car's computer matches the signal transmitted by the key, it will disable the immobiliser and allow the engine to start. The key with the transponder chip is often referred to as a 'fob' or a 'smart' key because it is more difficult to copy than a traditional mechanical key. With the help of special methods, it is possible to copy a conventional car key but not transponder keys. Transponder chips are powered by an infrared signal, not battery power. To activate the transponder the ignition cylinder must be in the ON position. The ring emits a burst IR energy that is detected by a microchip within the key. The chip then responds with an individual code to the immobiliser of your car. The car's computer examines the code in its memory with the one on the transponder and if the two codes match, it will start the engine. 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 will not move if the engine is not functioning. It's easy for a criminal to hot-wire it and then drive off. This is a great security measure against crime, and is why you should have your car's key-immobiliser repaired as quickly as possible in the event of a malfunction. If you don't take this action then the security light on your vehicle will continue flashing and you will not be able to begin it. Security Light The immobiliser is powered by a small battery that transmits an electrical signal to the transponder chip in your key. This anti-theft device prevents anyone from starting the car without the correct keys. If the system is unable to detect an electronic serial number from the chip on your key, it will disable the engine immobiliser to stop the car from starting. This system for car immobilisation is an an effective way to stop thieves, but it is also possible for it to become out of connection with the key or the transponder chip. This could be due to interference or an immobiliser that is too sensitive. If this is the case, it may 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 to ensure that it is ready to accept your keys once again. The security light is an immobiliser's way of alerting you to an issue. If the light is on when you try to start your car, it is a sign that the code stored in the ECU is not compatible with the chip in the key. This can occur in the event that your car's key was replaced with an alternative key that is not programmed for the vehicle, or when an ECU has been swapped incorrectly. If this is the situation it is recommended to take your transponder or key chip to a professional for them properly programmed for your vehicle. There is also the possibility that the system isn't accepting the key due to a software bug or update. To test this put your key in the ignition and turn it to the ON position but don't try to start the engine. Let the key stay in this position for 10 minutes. This should cause the security lights to turn on and to go off. If it does not, you will need to repeat the process and wait for another 10 minutes. Do this three times and the issue will be resolved. Programming A car immobiliser stops a car's engine from running without a correctly programmed key or fob. It utilizes a specific RFID chip that can't be copied and has a digital serial number. The immobiliser will be disengaged if it doesn't recognise the code. It's tough to beat. Modern cars are fitted with this security system as standard. This makes it very difficult to hot-wire a car or use a different key as a starter. The system works by sending a passcode from the key fob to the ECU. The ECU is aware that it's the right key and that there hasn't been compromised code. The system won't permit the car to start if the does not receive the correct code, and some models will even inform the owner in the event that someone attempts to use an incorrect fob or key. The system is not impervious to attack, but it is. Some thieves have managed to bypass the immobiliser by using methods such as 'hot-wiring'. This involves crossing the wrong wires in a vehicle's wiring to fool the ECU into thinking that the proper key or fob is being used. This is a risky technique and requires extensive experience to avoid electrocuting oneself. Modern car thieves are also employing more sophisticated methods like Bluetooth or specialised apps to steal a car's information and remotely manage it remotely. Owners of cars will often see warning lights that indicate an immobiliser gone haywire. This can occur for various reasons, but the most common one is a faulty battery in the keyfob. This problem can be fixed by replacing the battery. If this doesn't work, it could be that the transponder chip may be defective or the ECU is not matched. This is more complicated to determine and fix, as it can involve an expert car locksmith or dealership. However, a car's immobiliser may also be damaged by water ingress or even physically being pulled away from the fob or key. If you encounter any of these problems it is a good idea to consult a local car dealer or garage to seek help.