51 24 ... Notes And Instructions On Automatic Rear Lid Actuation (From 02/2003) (Electrohydraulic-Fully Automatic)

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2008 BMW 760Li, 2008 BMW 750i, 2008 BMW 750Li, 2007 BMW 760Li, and 2007 BMW 750i. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT:

Adhere to conditions of absolute cleanliness when working on the opened hydraulic system. Even the smallest of dirt particles in the hydraulic system can cause malfunctions.

Function description and check:

Refer to DIS (Diagnosis and Information System).

Fig 1: Identifying Diagnosis And Information System
Courtesy of BMW OF NORTH AMERICA, INC.

Installation location of individual components:

In luggage compartment on right side:

REAR LID MODULE
HYDRAULIC UNIT
Proportional valve
ANGLE TRANSMITTER on right rear lid hinge

In luggage compartment on left side:

HYDRAULIC CYLINDER on left rear lid hinge

Fig 2: Identifying Proportional Valve, Hydraulic Unit And Rear Lid Module
Courtesy of BMW OF NORTH AMERICA, INC.

Checking fluid level in hydraulic unit:

Necessary preliminary tasks:

Remove RIGHT LUGGAGE COMPARTMENT WHEEL ARCH TRIM

E67 only:

Remove additional trim panel

Test requirements:

Open rear lid (motor-driven) twice and close again, this bleeds the system.

Rising air bubbles must not be visible.

Check fluid level in installed state.

Check distance (B) from middle of marking (3) to upper edge of pump carrier (1).

B = 28±1 mm

When rear lid is fully opened (cylinder retracted), fluid level (2) must be in area (A) of marking (3).

NOTE:

Fluid fill quantity (lines filled with fluid and cylinder retracted):

Top edge of marked cross = 100 ml
Bottom edge of marked cross = 80 ml

Fig 3: Identifying Fluid Level
Courtesy of BMW OF NORTH AMERICA, INC.

Correcting fluid level in hydraulic unit:

Operation is described in:

CORRECT fluid level in hydraulic unit for rear lid actuation (electrohydraulic-fully automatic).