Traction systems hydraulic unit, design - GF42.50-P-4000-03S
WARNING: This page is about a different car, the 2009 Mercedes-Benz E550 and 2008 Mercedes-Benz E550. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Traction Systems Hydraulic Unit Components
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
The pressure reservoir, high-pressure charging pump and the SBC control unit are attached.
Fig 2: Traction Systems Hydraulic Unit Function Diagram