Are Car Key Immobiliser Repair As Vital As Everyone Says?
Key Fob Replacement and Reprogramming - Why Your Car Won't Start
Most vehicles are equipped with an immobilizer to prevent theft. If your vehicle won't start after inserting the key fob there could be an issue with a transponder chip that is not sending a security code to the immobilizer system.
This is a simple fix that any auto locksmith on the Gold Coast can do. Let's take a look at the different parts of your vehicle immobiliser to discover what you can do.
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If you're working in the field of auto repair it is crucial to be aware of your shop's revenue and cost-saving opportunities. One way to do this is to provide key fob replacement and reprogramming to your customers. This will not only benefit your customers, but it will also increase your shop's profits without subletting to the dealership.
Typically the key fob battery powers the remote locking and opening systems. However, it doesn't power the immobiliser. The immobiliser is powered by 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 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 will check the code to ensure it's correct. If the code is incorrect the system will disable components that are essential to starting the car, like the ignition motor or starter motor. This will make the car nearly impossible to start without the right key.
The immobiliser has proven highly effective in reducing car theft since its first introduction. However, thieves are always looking for new ways to get around these security measures. One of these methods is the Kia Challenge trend on TikTok that demonstrates how easy it is to connect hot wires to an automobile.
Most insurance companies now factor in the use of an immobiliser when they calculate premiums, making it more attractive to shop for a car that already has this feature. Even vehicles equipped with an immobiliser might have problems. Fortunately, these problems are usually easy and cheap to fix. The majority of the time the issue is caused by an inactive or dead key fob battery. A quick diagnostic test could uncover the problem. 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 problem.
Transponder Chip
A tiny electronic chip, called a transponder, is built inside the head portion of your car keys. This technology was first introduced in cars manufactured after 1995. Also referred to as a 'chip key or a 'transmitter and responder key, it's designed to stop the engine from starting if another person has an exact copy of your car key. It works by transmitting radio signals from the key to the immobiliser system. If the code stored in the computer of the car is in line with the signal sent by the key, the immobiliser will be removed and the engine will be able to start.
The key with a transponder can also be referred to as a "fob" or a "smart" key, because it is more difficult to duplicate than mechanical keys. With the help of special techniques, it is possible to duplicate a standard car key but not the transponder key. Contrary to the remote central locking element of a standard key that relies on battery power the transponder chip is powered by an infrared (IR) signal 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 which is detected by a microchip inside the key. The chip then sends an individual code to the immobiliser of your car. The car's computer analyzes the code stored in its memory with the transponder's and when the two codes match, it will start the engine.
If the immobiliser detects an unauthorized transponder or key is in use, it will disable the engine and block the essential components from working. The car will not move in the event that the engine is not working. It is easy for criminals to wire it and then drive off. This is a powerful deterrent against crime, and is one of the main reasons why it's important to have your car's key immobiliser fixed immediately you discover any issue with it. If you don't do this, the security light on your car will keep blinking, and you won't be able to start it.
Security Light
The immobiliser is powered by a small battery that sends an electrical signal to the transponder chip within your key. It is an anti-theft device that prevents anyone from driving your vehicle without the correct key. If the system is unable to detect a digital serial number from the chip on your key, it will shut off the engine immobiliser to stop the car starting.
The car immobiliser is an excellent way to deter thieves, but it could sometimes get out of the sync. This could be due to interference or the system becoming too sensitive. If this is the situation, it may need to be reset. To do this, disconnect the battery. Leave it disconnected for about 15 minutes, then insert it and start the car. This will reset the system and allow it to accept the key again.
The security light is an immobiliser's method of warning you of a problem. If you attempt to start the car and the light is solid on it means that the chip in your key isn't in sync with the code that is stored in the ECU. This could happen if have recently replaced your car key with one that has not been programmed to the vehicle, or if you've had a bad swapped ECU.
If this is the case you should take your key or transponder chip to a professional to have them correctly programmed for the vehicle you are driving. There is also the possibility that the system isn't accepting the key because of a software bug or update. To test this, insert your key into the ignition and then turn it to the ON position. Do not attempt to start the vehicle. Let the key stay 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 procedure and wait for another 10 minutes. This should solve the issue when you repeat the process three times.
Programming
The car immobiliser prevents the engine from running when a key or fob is not properly programmed. It uses a special RFID microchip that isn't able to be duplicated and has its own serial number. The immobiliser will stop working when it is unable to recognize the code. It's tough to beat.
Modern cars come with this security system by default. This makes it difficult to wire a car or use a different key for starter. The system works by checking the chip in the key fob or key, and transmitting a passcode to the ECU (electronic control unit). The ECU recognizes that it is the correct key and that there hasn't been compromised code. The system won't allow the car to begin when it doesn't receive the correct code. Some models even inform the owner if they attempt to use an incorrect fob or key.
The system isn't completely 100% secure, however. Certain thieves have been able to get around the immobiliser using techniques like 'hot-wiring'. This involves crossing the wrong wiring in a vehicle in order to trick the ECU. But, this technique is extremely dangerous and requires a lot of experience to carry out the procedure without damaging yourself. In addition, many modern car thieves have switched to more sophisticated methods, such as using specialized apps or Bluetooth to steal a car's data and remotely control it using their phones.
Car owners will often get warning lights that signal that the immobiliser is malfunctioning. It can occur for a variety of reasons, but the most common is a dead or defective battery on the key fob. The issue can be solved by replacing the battery.
If this isn't working the transponder chip could be defective or not compatible with the ECU. This is more difficult to diagnose and fix as it could require an expert locksmith or a dealership. A car's immobiliser can be damaged if water is able to enter the system or is physically pulled away from its fob or key. If any of these issues occur it's recommended to visit an auto garage or a local dealer for assistance.