Preliminary Work

WARNING: This page is about a different car, the 2020 Porsche Panamera, 2019 Porsche Panamera, 2018 Porsche Panamera, and 2017 Porsche Panamera. However, it is still accessible from the selected car via links, so may be relevant.

Remove cowl panel cover.
> WM, 508719 REMOVING AND INSTALLING COWL PANEL COVER
Drain the brake fluid reservoir.
1. 2.1 Unscrew cap on brake fluid reservoir.
2. 2.2 Extract brake fluid from brake fluid reservoir using a syringe.
3. 2.3 Screw on and tighten cap on brake fluid reservoir.
4. 2.4 Clean off any escaping brake fluid immediately using suitable cleaning aids.
  Wash affected components again with water and dry them.