Backrest Adjuster, Removing And Installing: Removing

-- Turn backrest adjustment wheel -1- until you see a locking tab at back -arrow A-. Possibly use a flashlight.

Fig 1: Identifying Backrest Adjustment Wheel

Courtesy of AUDI OF AMERICA, LLC

-- Engage Assembly Tool:3399  and pry it in the direction of the -arrow B-.

-- Turn backrest adjustment wheel about 120° more.

-- Engage Assembly Tool:3399  and pry it in the direction of the -arrow B-.

-- Remove backrest adjustment wheel.