Separating Cover from Padding:

Removing 

Fig 1: Separating Cover From Padding

Courtesy of AUDI OF AMERICA, LLC

1. Cover and Upholstery
2. Upholstery Clips

Fig 2: Identifying Cover And Upholstry Clips

Courtesy of AUDI OF AMERICA, LLC

-- Cut the upholstery clips -2-.

-- Remove cover -1- from cushion -3-.

Installing 

Install in reverse order of removal. Observe the following when doing so:

-- When installing new upholstery clips, use Upholstery Clip Pliers VAG1634.