Rear Seat Backrest Locking Mechanism, Removing And Installing: Removing

-- Remove the rear seat backrest. Refer to REAR SEAT BACKREST, REMOVING AND INSTALLING, OUTER FOLDING BACKREST .

-- Remove the headrest. Refer to HEADREST, REMOVING AND INSTALLING .

-- Remove the rear seat backrest in the locking mechanism area. Refer to COVER AND CUSHION, REMOVING AND INSTALLING, FOLDING BACKREST .

Vehicles with Remote Backrest Release: 

Fig 1: Identifying Release Cable From Locking Mechanism To Coupling Station - Avant

Courtesy of AUDI OF AMERICA, LLC

-- Unclip the release cable -1- from the bracket -5- on the rear seat backrest.

-- Disengage the release cable from the locking mechanism -2- in direction of -arrow A-.

-- Remove the release cable nipple -4- from the release handle -3- in direction of -arrow B- and remove the release cable.

Continuation for all Seat Versions: 

Fig 2: Identifying Bolts

Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolts -3-.

-- Remove the locking mechanism -2- from the backrest frame -1-.