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Service System description entry and start authorisation Edition 10.2011 Service Department. Technical Information Service List of Workshop Manual Repair Groups Repair Group 01 Self diagnosis, electrical checks Technical information should always be available to the foremen and mechanics, because their careful and constant adherence to the instructions is essential to ensure vehicle road worthiness and safety. In addition, the normal basic safety precautions for working on motor vehicles must, as a matter of course, be observed. A005A501120 Audi A4 2008 ➤ , Audi A5 Cabriolet 2009 ➤ , Audi A5 Coupé 2008 ➤ , Audi System description entry and start authorisation Edition 10.2011 Contents 01 Self diagnosis, electrical checks 1 1 General notes on entry and start authorisation function 1 1.1 General functions 1 1.2 Entry and start authorisation main functions 1 1.3 Note for service 1 2 Immobilizer V function 2 2.1 General notes on immobilizer V 2 2.2 System overview for immobilizer V 2 2.3 Designation of components of immobilizer V 3 2.4 Adaption concept for immobilizer V 4 3 Terminal control and starting the engine 6 3.1 General notes on terminal control and starting the engine 6 3.2 Conditions for terminal 15 on 6 3.3 Conditions for starting the engine 6 3.4 Starting with vehicle key 6 3.5 Starting engine with „Advanced Key“ 7 3.6 Ignition key withdrawal lock 8 3.7 Note for service 9 4 Locking the steering column 10 4.1 General notes on the steering column lock 10 4.2 Locking and unlocking the steering column 10 4.3 System overview for steering column lock 10 4.4 Note for service 11 5 Advanced Key 12 5.1 General information on entry and start authorisation control unit „Advanced Key“ 12 5.2 System overview of entry and start authorisation control unit „Advanced Key“ 12 5.3 Note for service „Advanced Key“ diagnosis 13 Contents i Audi A4 2008 ➤ , Audi A5 Cabriolet 2009 ➤ , Audi A5 Coup