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To date, the diagnosis system VAS 5051 only Secondly, the diagnosis tester link to a central permitted communication with the vehicle. data base. The on line link extends the potential offered Fully automatic adaption of the immobilizer by the tester. components is effected by means of direct communication between data base and To coincide with the market launch of the tester. Audi A8 03, two on line functions are This facilitates the procedure when replacing available for the diagnosis tester. such components in the vehicle and also further enhances system reliability. Firstly, telediagnosis which permits remote control of the tester from another location. 2 Contents Page Prerequisites Diagnosis tester link to PC network . .4 Software required .4 Telediagnosis What is the purpose of telediagnosis . .6 Activating telediagnosis . .7 Immobilizer What is immobilizer 4 .8 Central data base FAZIT . .8 Access requirements for mechanics . .9 Mandatory entries .9 New features of immobilizer 4 . .10 System components . .11 Immobilizer control unit .12 Engine control unit .12 Vehicle key . .12 Entry and start authorisation switch E415 .13 Steering column lock control element N360 . .13 Other components .13 Re adaption following immobilizer control unit theft .14 Key programming at the factory . .14 Adaption for immobilizer 4 .15 Adaption for immobilizers 1 to 3 . .15 Menues for immobilizers 1 to 3 .15 Radio Code Radio code enquiry not for A8 03 . .16 Component Protection What is meant by component protection . .18 Component protection function . .18 Adaption of new control unit .19 Service Component protection diagnosis .20 Fault finding strategy .20 Checking on line link . .21 The Self Study Programme contains information on design New Attention features and functions. Note The Self Study Programme is not intended as a Workshop Manual. Values given are only inten