Audi A5 - The Electrical Steering Column Lock

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In the new Audi A5, the electrical steering column
lock control unit J764 is again firmly attached to the
steering column.
In case of malfunction of the steering column lock,
it is necessary to replace the complete steering col-
umn, to which the steering column lock is attached
by 2 tear-off screws.
The electrical steering column lock
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Locking and unlocking the steering column
Control unit J764 unlocks the steering column in the following situations:
During ignition lock operation:
– when the ignition key is inserted in the ignition lock (
‘ detected by NO contact)
Keyless operation:
– Terminal S is activated by pressing the Start/Stop button
Control unit J764 locks the steering column in the following situations:
During ignition lock operation:
– the ignition key is removed
Keyless operation:
– the door is opened
To lock the steering column, the following additional conditions must be met:
– the ignition must be OFF
– terminal S must not be detected
– the vehicle must be stationary