From year 1995 in Audi-VW (VAG) cars is used engine immobilizer. The VAG group immobilizer system consists of an immobilizer ECU which controls the recognition of keys and the Engine Management ECU system. Immobilizer is activated when the ignition key is removed and, together with the engine control unit, largely prevents unauthorized starting of the engine. The system uses a transmitter and receiver unit in the ignition key (transponder). Whenever an attempt is made to start the engine, it transmits a new code to the car's electronics. The immobilizing is only cancelled and car motor electronic receives permission to start engine if the key sends a right authorization code.
If the keys are lost or a replacement Engine Management ECU is fitted then the transponder keys will need programming so that the ECU memories recognize the codes. The Login Code required to program new keys for all VAG cars. This code is on the plastic label and usually is connected together with car keys. If you lost or don't know car Login Code you must contact dealer and order it - this can take up to 1 month. Or you can read it with our tools. Our KeyDongle Login Reader can read this secret code from car and can simply adapt additional on new key.
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