What is an immobilizer module?

An immobiliser or immobilizer is an electronic security device fitted to a motor vehicle that prevents the engine from running unless the correct key (transponder or smart key) is present. This prevents the vehicle from being “hot wired” after entry has been achieved and thus reduces motor vehicle theft.

What are the parts of the immobilizer system?

The components of the Immobilizer system that require special procedures for replacement include the keys, Engine controller (ECU), and the Instrument Cluster (or the separate Immobilizer modules in vehicles so equipped). In some cases other Modules or Parts may be Immobilizer related as well,…

Where can I find the Immobilizer 1 serial number?

Immobilizer 1 Vehicles were sold in the Rest of World (RoW) Market only, not in the North American Region (NAR). If in doubt, check the Factory Repair Manual for your specific Vehicle. Immobilizer 1 can also be identified via the Immobilizer Identification/Serial Number.

Is there a warning light on the Immobilizer?

All Jetta, Golf, and Beetle definitely had them by this point. Cabrio and Eurovans have no immobilizer warning light and the immobilizer module is separate from the instrument cluster. -If you have no immo- you can swap keys, ECUs, and instrument clusters without any special programming.

Where is the relay box for the Immobilizer?

You must place the key or just the half with the chip inside the relay box. The relay box is then hidden somewhere in the car. When you use the remote starter, it relays the immobilizer signal inside the hidden box to the antenna around the ignition cylinder ring and works like OEM.

What is the immobilizer system on a Toyota RAV4?

The immobilizer system, also known just as “immo”, is an automotive security system integrated into many vehicles since the 1980s and it has become more sophisticated with the years. It is installed in some 2001, 2002 and 2003 Toyota RAV4 cars, but not in all of them (from those years).

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