Car Immobiliser Repair

In the latter part of the 20th century automakers began using immobilisers for cars because hot-wiring was becoming more popular among thieves. The immobiliser prevents the engine of your car from starting in the event that the chip inside your key fob is damaged or doesn't match.

It is therefore important to repair your car's key immobiliser as soon as it is damaged or malfunctions. Here are a few most common reasons for the immobiliser on your car not working:

Dead Batteries

A dead battery is among the most frequent reasons for key fob issues. Problems with batteries can be caused by prolonged use and harsh environmental conditions as well as ageing. If a battery fails in its function, it will not transmit the signal required by the immobiliser and operate the key fob. This could prevent the car from starting, resulting in the need for a professional to perform an repair of the immobiliser system.

Most of the time an easy replacement is all that is required to revive an old battery and get it working again. A high-quality coin-style battery is available at your local hardware store or even some general retailers for between $5-10. When you purchase the new battery, carefully take the old one off and then open the case. Find slots or notch on the seam that separates the bottom and top halves of the fob. Use the screwdriver, either flathead or coin, into the slot and work it around the edges until you can open the fob. Then, insert the new batteries and snap the two halves together. After you've completed the process your work, you can reuse the old battery at a nearby battery collection site.

If the new battery doesn't fix the problem, there may be an issue with the RFID system within the key fob. 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 in the key fob isn't able to communicate with the vehicle, you'll need to make a key for the vehicle or bring it to the dealership to have an immobiliser repaired.

If changing the batteries does not solve the issue, you may want to remove the key fob to look for buttons that are out of position or are damaged. Because your key fob gets jostled about a lot as you use it, it's not common for certain buttons to become displaced or stuck over time.

Key for transponder not working

A damaged transponder key is an unfortunate incident that could result in serious consequences. Transponder keys differ from traditional metal keys that engage the ignition mechanically. They feature an electronic microchip which sends an unique number to the immobilizer system in the car to confirm its identity. key repair car adds a layer of security that reduces the chance of theft and other forms of crime committed by vehicles. However, as with any other electronic device, transponder keys are susceptible to a variety of problems that are related to the chip's functionality.

key repair car can be fragile and even a minor physical damage can impact their capability to function. This is the reason it's essential to regularly inspect your transponder key for signs of wear and tear as any such damage can be the direct cause of malfunctioning car immobiliser.

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

It's also important to remember that a transponder key is specifically programmed for a specific vehicle, and changing any of the parts that are sensitive could result in issues with compatibility that could impact the functionality of the key. It is best to avoid making any modifications to the key unless you're equipped with the right expertise and equipment.

A professional locksmith can help you if your key needs to be replaced or repaired. They will be able to duplicate your existing key or create a new one from scratch, and they'll be able program it to match your specific vehicle's immobilizer system, ensuring that it operates properly. This process isn't as simple as copying a standard car key made of metal. it requires specialized tools to ensure that all of the proper information is entered into the software.

Antenna or Receiver is damaged.

The transponder chip in your car key sends a signal that is recognised by the ECU to ensure that it is the correct key to start the car. If it's not, the immobiliser system will prevent the engine from being started. This is to stop thieves from accessing your vehicle's engine with a stolen or duplicated keys.

If the signal isn't able to get to the ECU because of a problem with the antenna or receiver the car won't begin. A professional auto locksmith will be in a position to assist you in resolving this problem.

This can be due to a variety of factors, such as an antenna that isn't compatible or electrical interference. Radio frequency interference could be caused by heavy electrical equipment lighting systems computers, computers, digital devices cable television systems, and transmitters. It is also possible that the coaxial antenna cable has become disconnected or damaged. This could happen when pets run around the house or the cable is twisted or damaged during installation.

Another reason that the antenna may not be functioning is that the receiver might be too far away from the antenna. Connect the receiver to another antenna and test. If the error message is still present it is possible that you need to replace the antenna or redirect the coaxial cable.

Antennas don't really go bad, but they can get twisted or pinched or loose from the connector, which can cause the RF level to drop. It is also important to determine if there is any equipment installed between the antenna and the receiver, such as a surge protector or splitter as this may impact the strength of the signal.

If the EEPROM programming method is used to program a new car key, it requires the removal of specific modules from your car (security components) and then reading the "password" and stored information from them. This requires a lot of expertise since the information could be corrupted. A professional auto locksmith will reduce the chance of this happening by reading data directly from the module using a specific tool.

Faulty Electronics

A lot of modern vehicles have security systems that stop them from starting the engine when they don't have the remote or key to the car. These systems use RFID (Radio Frequency Identification) or immobiliser controls to authenticate a fob or a key that is put into the ignition. It's a great method to decrease the crime in vehicles, but it can also be a problem.

If the security light on your dashboard is lit solid, it indicates that the car immobiliser isn't accepting the signal from the fob or key. This could be caused by various factors including the battery in the key fob being depleted to physical damage or wear on the key itself. If you're experiencing this issue follow the instructions of the manufacturer to reset the system or consult a professional for help.

When you insert your transponder into your key, the chip transmits an alert to the immobiliser system of your car. The code is examined against the codes that are stored on the computer. If the codes are the same the engine will start and the immobiliser will shut off. If the immobiliser is unable to detect the signal that it is looking for, the engine will not start and you could be left stuck.

There are a variety of issues that can cause the car's immobiliser to stop working correctly, but the majority of them are relatively easy and affordable to fix. A dead or dying keyfob battery is the most frequent cause, and can be easily identified by an easy diagnostic test. If this doesn't resolve the issue, there may be other issues with your car's electrical system that are impacting the immobiliser's performance. If this is the case it is recommended that a professional examine the electrical system in your car and look for signs it may be affected by damaged connections or loose connections.


A car key immobiliser helps to protect your vehicle against access that is not authorized. While these systems are generally quite reliable, they may malfunction and require repairs or replacement. You can prepare for the occasional issue by knowing the most frequent causes and signs.