32 41 253 Removing and installing / replacing fluid reservoir for power steering with Dynamic Drive / active front steering

WARNING: This page is about a different car, the 2005 BMW 645Ci and 2004 BMW 645Ci. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

32 1 260

IMPORTANT: Adhere to the utmost cleanliness. Do not allow any dirt to enter the hydraulic system. Seal off pipe connections with plugs.

Necessary preliminary tasks:

Draw off and dispose off hydraulic fluid from fluid reservoir
M54, N52:
- Remove intake filter housing
M57TU, M57T2, N62:
- Release coolant expansion tank and place to one side, refer to 17 11 100 REMOVING AND INSTALLING/REPLACING COOLANT EXPANSION TANK (N62) .

Unscrew nuts.

Remove shims.

If necessary, remove bracket (not shown in illustration).

Installation:

Replace self-locking nuts.

Fig 1: Replacing Self-Locking Nuts

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: If necessary, raise and/or turn fluid reservoir in order to gain better access to plug connection and hose clamps.

If necessary, disconnect plug connection at level switch. Remove hose clamps if necessary with special tool 32 1 260.

Disconnect suction line and radiator return line from fluid reservoir.

NOTE: Lift out fluid reservoir.

Fig 2: Lifting Out Fluid Reservoir

Courtesy of BMW OF NORTH AMERICA, INC.

Replacement:

If necessary, remove level switch.

After installation:

Fill and bleed hydraulic system, refer to 32 13 006 BLEEDING POWER STEERING UNIT .
Check pipe connections for leaks
Version with Dynamic Drive:
- If necessary, carry out initial Dynamic Drive operation, refer to 37 10 001 INITIAL OPERATION WITH TEST RUN OF DYNAMIC DRIVE .