Where is the serial number located cpu or immobiliser?
Is it not so the recieved code in the immobiliser is send to the cpu where it is compared with the code stored there . If it is the right one the engine is allowed to start.
That way the immobiliser only activate the key and sends the recieved key code to the cpu .So you can change this box. If you use an other key the CPU must go with it to start.
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