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First, let’s understand the principle of a car immobilizer. It’s an electronic device that separates the i) fuel system, ii) ignition system and iii) engine. Latest vehicles use Engine Management System to control these systems, where the immobili...


A car immobiliser is an anti-theft mechanism that prevents an automobile's engine from starting unless the correct ignition key (or Key FOB) is inserted into the ignition slot. One of the advantages of an immobiliser system is that the car owner does not have to remember to activate it - its operation is automatic.


How does an immobilizer work in a car? There are a number of types of immobilizers for automotive use. Many new cars come with them installed from the factory, and in those cases the actual ...


An immobiliser or immobilizer is an electronic security device fitted to an automobile that prevents the engine from running unless the correct transponder car key (or other token) is present. This prevents the car from being "hot wired" after entry has been achieved and thus reduces motor vehicle theft.Research shows that the uniform application of immobilisers reduced the rate of car t...


How Does a Car Immobilizer Work? The inside of the key fob contains a transponder chip. When you put the key into the ignition or have the key fob inside the vehicle (for keyless fobs), the transponder chip inside the key fob sends a security code to the car’s immobilizer system.


What is a factory fitted immobiliser – and do I have one? What is a factory fitted immobiliser – and do I have one? ... but they all work on the premise that the vehicle will only start if the key’s code matches that of the ECU. ... Thatcham-approved immobiliser will make your car more secure than a car without one.


After both these codes match, only then the immobilizer sends another coded signal to the Engine Management System to unlock the engine. Without this, the engine does not start. In the absence of the second security code, still, the engine will not start even if someone tries short-circuiting the ignition circuit.


As there is a high chance we could save money on our car insurance premium if we do have an immobiliser fitted, it is important we all know how to find out the information. Below we explain everything you need to know about immobilisers, and show you how to work out if your car has a factory-fitted immobiliser…