Removing brake master cylinder

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2013 Porsche 911, 2012 Porsche 911, 2011 Porsche 911, 2010 Porsche 911, and 2009 Porsche 911. However, it is still accessible from the selected car via links, so may be relevant.

Suck brake fluid out of the reservoir or pump out the brake fluid using the brake pedal via a front and rear brake calliper. Use a collecting bottle.
Pull electric line -Arrow- off the reservoir -A- . Undo the brake lines -Arrows- on the brake master cylinder -B- . Close the brake lines and connections with suitable plugs.

Fig 1: Locating Brake Lines On Brake Master Cylinder
Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.
Undo the fastening nuts -1- on the brake master cylinder. Pull out brake master cylinder -B- .
1. Brake master cylinder mount
2. Brake booster mount
  
  Fig 2: Identifying Brake Master Cylinder Mount
  Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.