Three parts make up a car immobilizer: a control unit, a relay unit, and a key. An electronic immobilizer makes it so that a car won’t start without the right key or key fob.
Since October 1998, all new cars sold in England and Wales are required to have a car immobilizer. The factory-fitted immobilizer is the best kind of car immobilizer because it is made specifically for your car model and is guaranteed to fit correctly.
When you start your car, the key or fob sends an electronic code to the ECU, which is how car immobilizers work. The engine will then be able to start.
However, the immobilizer would activate and stop the ECU from receiving that signal to start the engine if the car is being stolen and the burglar tries to use a different key or fob. This is why it’s crucial to fix a broken car immobilizer as soon as you notice the problem.
Immobilizers come in various varieties; some require a manual PIN code, while others require a touch key. The majority of contemporary immobilizers can be controlled via Bluetooth by smartphone apps.
In this article, CarMats will help you know about car immobilizer repair costs, car immobilizer warnings to watch out for and frequently asked questions about car immobilizers.
Car immobilizer repair average costs
The cost of fixing your car immobilizer can vary depending on the make and model of your vehicle, as shown in the table below. Car immobilizer repair estimates typically cost between $97 and $100.
You might need to have the immobilizer system repaired if your car won’t start even with the right key in the ignition or if the immobilizer is broken. To decide if a repair is needed, a mechanic must first see if the car’s immobilizer is broken or not working right.
- Car key battery replacement
- Transponder chip replacement
- Mobile car immobiliser repair.
Common car immobilizer repairs
Car fob battery replacement
If you try to remotely unlock your car doors but they won’t open, you might need a new battery. The majority of contemporary vehicles lack exterior keyholes, making it impossible to manually open the doors with a key. In the same way, if you can’t use the fob to lock the car from the outside, there may be a battery problem.
Transponder chip replacement
Transponder chips can malfunction after a while of use, just like any other electronic device. A transponder chip, which is put into the car key’s plastic top, is basically a tiny motherboard.
This chip sends a signal to the vehicle’s immobilizer when the key is turned in the ignition to let it know that the correct key has been used.
If the transponder chip is broken, the car’s engine may run, but it won’t move. If the transponder is broken, you can still unlock the doors of your car, but starting the vehicle will be challenging.
Car immobiliser repair
If the car can be unlocked and the key works properly, it’s possible that your actual car immobilizer needs to be repaired.
A mechanic will need to inspect it if the car immobilizer is broken or malfunctioning. The technician may discover that the car’s immobilizer isn’t functioning properly because the wires are corroded or damaged. Alternately, it’s possible that the ECU or sensors are broken.
Top warning signs your car immobilizer needs attention
- The operation of central locking is either nonexistent or spotty.
- The dashboard displays the car’s immobilizer light.
- The car key or fob is broken, so it can’t be used to lock or unlock the doors.
- No ignition key movement.
- The car starts, but then abruptly stops.
- The car alarm won’t operate.
Many of these typical car immobilizer issues are brought on by key fobs that have lost their coding. Corroded or flawed wiring in the key or an issue with the ECU may be to blame for this.
Is a car immobilizer repair necessary?
If the car immobilizer is broken or not functioning, it must be repaired. You should get in touch with a garage for car immobilizer repair as soon as you become aware of immobilizer issues in your vehicle. If your car won’t unlock at all or the engine won’t start, you might need to have it towed to a garage.
Get your car immobilizer repaired at home
To have your car’s immobilizer checked remotely, call a mobile mechanic. Many people lead busy lives, so taking your car to the garage might not be convenient. Additionally, some garages might provide a pick-up and drop-off service. Just type in your postcode to find mobile mechanics who can fix an immobilizer while you sit at home or work.
What does a car immobilizer do?
An electronic device called a car immobilizer prevents a vehicle from starting unless the proper key or key fob is used. When you start your car, the key or fob sends an electronic code to the ECU, which is how car immobilizers work. The engine will then be able to start. However, the immobilizer would activate and stop the ECU from receiving that signal to start the engine if the car is stolen and the burglar tries to use a different key or fob.
What’s the difference between an immobilizer and a car alarm?
The purpose of a car’s alarm is to warn the driver when the vehicle is attempting to be stolen. While the immobilizer sometimes stops the engine in a short amount of time and keeps the spark plug from firing.
Can faulty car immobilizers be fixed?
Yes. Should there be any damage or a problem, an electronics-trained garage technician can fix your car immobilizer.
Does a car immobilizer repair come under my insurance or warranty?
The repair of the car immobilizer is not covered by your insurance policy, but if your car is less than three years old, there is a chance it might be covered by the warranty. To learn more about whether the warranty will cover car immobilizer repairs, it is best to contact the dealership.
Can I repair my own car immobilizer?
You can take a few actions before asking the specialized technicians to take a look. If you suspect a problem with your immobilizer, you can try your backup key to see if the doors or engine will unlock or start. You could try changing the batteries in your remote key fob to see if that solves any problems. If there are any problems with the immobilizer or its electronics, a technician in a garage will be able to find them and fix them.