Lock cylinder, removing and installing: Installing

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Installation is reverse of removal, noting the following:

Insert spare key into lock cylinder and turn to position "ignition on".
Re-insert steel wire or pin -1- into the hole in front of lock up to stop.
Slide lock cylinder -2- with ignition key into steering column housing.

Fig 1: Using Steel Wire Or Pin To Install Lock Cylinder With Ignition Key Into Steering Column Housing

Courtesy of AUDI OF AMERICA, INC.

Then pull out wire and press in lock cylinder firmly until catch engages audibly.
Connect electrical connection at induction coil for anti-theft immobilizer.