The Three Greatest Moments In Car Key Immobiliser Repair History

· 6 min read
The Three Greatest Moments In Car Key Immobiliser Repair History

Car Immobiliser Repair

In the latter half of the 20th century, automakers began to use car immobilisers because hot-wiring was becoming more popular among thieves. The immobiliser prevents your car from starting if your key fob chip is damaged or doesn't match.

This means it's important to get your car key immobiliser repair completed quickly if it's damaged or broken. Here are some typical reasons for the immobiliser in your car not being able to function:

Dead Batteries

Key fob issues are usually caused by batteries that are dead. Problems with batteries are often caused by prolonged use and harsh environmental conditions as well as the aging process. When a battery is damaged it will not provide the power necessary to operate the key fob and transmit the signal required by the immobiliser system. This can prevent your vehicle from starting and may require a professional to fix the immobiliser system.

In most cases, a simple replacement can bring back an old one. You can buy a high quality coin-styled batteries at your local hardware store or even from some general retailers, for around $5-10. Once  online 've purchased a brand new battery, take the old one from the fob and carefully open the case. You'll find an opening or notch along the seam that separates the bottom and top halves. Use the screwdriver, either flathead or coin, into the slot and work it around the edges until you can open the fob. Then, you can insert the new battery and then snap the two halves of the fob together. After that you can reuse the old battery at a collection facility close to you.

If the new battery doesn't solve the issue, it may be a problem with the RFID system on the key fob itself. In the majority of vehicles that have push-button ignition, the fob must be placed close to the ignition barrel to verify its presence. If the RFID inside the key fob cannot communicate with the vehicle, you will be required to have a replacement key or take it to a dealer to repair the immobiliser.

If changing the batteries doesn't solve the issue it's possible to remove the key fob to check for any buttons that are not in place or broken. Because your key fob is frequently tossed around during use and it's not uncommon for some of the buttons to become misaligned or stuck over time.

Faulty transponder key

A transponder key that's not working could have severe consequences. Transponder keys are different from conventional keys made of metal, which engage the ignition mechanically. They are equipped with an electronic microchip which sends an unique number to the immobilizer system of the vehicle to confirm its identity. This provides an additional layer of security, decreasing the chance of thefts and other vehicle-related crimes. Transponder keys, just like any other electronic device, are prone to various problems, including those relating to the chip's function.

Transponder chips are delicate and even a small amount of physical damage could affect their ability to function. This is why it's crucial to regularly check your transponder key for signs of wear and tear because any damage that occurs could be the direct cause of malfunctioning car immobiliser.

The microchip in the internal circuit of a transponder is also sensitive to moisture and other environmental conditions. This can affect the ability of the key to communicate with an immobilizer system. Therefore, it is important to keep the key fob as far from water as is possible.

It's also important to remember that a transponder is specifically programmed for a specific vehicle, and altering any of the parts that are sensitive could lead to compatibility issues that could affect its function. It is recommended to not make any modifications to the key unless you are equipped with the right expertise and equipment.

A professional locksmith can help you when your key needs to be replaced or repaired. They'll be able to duplicate your key or design a brand new one from scratch, and they'll be able program it to match your particular vehicle's immobilizer system, assuring that it functions properly. This isn't as simple as simply copying a metal car key. It requires tools that are specialized to ensure that the software is programmed with the proper information.

Receivers or Antennas that are not working properly

The transponder chip that is in your car key sends signals that are recognized by the ECU to verify that it is the correct key to start the vehicle. The immobiliser stops the engine from starting if it's not the correct key. This is a way to prevent thieves from using stolen or cloned keys to gain access to your car's motor.

However, if the signal isn't able to reach the ECU due to a problem with the receiver or antenna the car won't start. A professional auto locksmith can assist you in resolving these issues.

This can be caused by many factors, including an antenna that is not compatible or electrical interference. Radio frequency interference (RFI) can be caused by communications equipment and transmitters such as computer systems, cable television systems and digital devices, heavy electrical equipment or lighting systems. The coaxial antenna cable may be damaged or disconnected. This could happen if your pets run around in the house, or if the cable is twisted during installation.

Another reason that the antenna might not be working is because the receiver might be too far from the antenna. You can test this by connecting the receiver to another antenna. If the error message remains then you may need to replace the antenna or reroute the coaxial cable.

Antennas aren't good, but they could be bent, pinched, or come loose from their connectors, causing the RF strength of the signal to drop. Make sure there's nothing between the receiver and antenna, like a surge protector, splitter or splitter, that could affect the signal strength.

If the EEPROM programming method is employed to program a new car key, it requires extracting specific components from your car (security components) and then reading the "password" and other stored data from them. This requires a lot of expertise, as there is a risk that the data may be damaged. A professional auto locksmith can minimize the risk by reading data directly from the module a specific tool.

Faulty Electronics

Many modern vehicles are equipped with security systems that prevent the engine from starting if the car's fob or key isn't in the car. These systems use RFID (Radio Frequency Identification) or immobiliser controls to authenticate a key or fob that is inserted into the ignition. This is a great way to reduce vehicle theft however, like all pieces of electronic equipment, it's possible to fail.

If the security light is not flashing on your dashboard, this indicates that the immobiliser in your car is not receiving the signal from the fob or key. This can be due to a number of things, including a depleted battery in the keyfob or physical damage on the key. If you're experiencing this issue, follow the manufacturer's directions to reset the system, or consult a professional for help.

When you insert your transponder into your key, the chip sends a signal to the immobiliser system in the car. This code is then examined against the codes that are stored on the computer. If the codes match, same, the engine will start and the immobiliser shuts off. If the immobiliser fails to recognize the signal, it will stop the engine from turning and could cause you to be stuck in a strange place.


There are many issues that could cause the immobiliser in your car to stop working properly. However, the majority of them are easy and inexpensive to repair. A dying or dead keyfob battery is the most common cause, and can be easily identified by conducting a simple diagnostic test. If this doesn't resolve the issue, it could be other issues with your vehicle's electrical system that are impacting the immobiliser's performance. If this is the situation an expert can look into your car's electrical system and look for signs that it could be affected by loose connections or damage.

A car key immobiliser helps to protect your vehicle against unauthorized access. These systems are generally reliable, but they can occasionally malfunction and need to be replaced or repaired. By understanding the most common reasons for these issues and knowing what signs to look out for, you will be prepared for the occasional incident.