A4 Quattro Wagon V6-3.0L (AVK) (2002)
Ignition Switch Lock Cylinder: Service Precautions
Lock Cylinder And Ignition/starter Switch, Servicing
CAUTION:
Before beginning repairs on the electrical system:
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Obtain the anti-theft radio security code.
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Switch the ignition off.
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Disconnect the battery Ground (GND) strap.
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On vehicles equipped with Audi Telematics by OnStar, switch-off the emergency (backup) battery for the Telematic/Telephone Control
Module prior to disconnecting vehicle battery.
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After reconnecting vehicle battery, re-code and check operation of anti-theft radio. Also check operation of clock and power windows.
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After reconnecting vehicle battery on vehicles equipped with Audi Telematics by OnStar, switch-on the emergency (backup) battery for
the Telematic/Telephone Control Module.
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Switch ignition off and disconnect battery Ground (GND) strap.
NOTE
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Induction coil for anti-theft immobilizer is connected to lock cylinder and cannot be replaced individually.
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If the induction coil is faulty, the lock cylinder must be replaced.
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Observe induction coil specifications when replacing lock cylinders.