31 12 000 Removing And Installing/Replacing Left Or Right Control Arm

WARNING: This page is about a different car, the 2007 BMW 550i and 2006 BMW 550i. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: If the control arm is detached from the front axle carrier, it is necessary after reinstallation to carry out a wheel/chassis alignment check.

Necessary preliminary tasks:

If necessary, remove steering gear cover at side

Right side only on version with xenon headlight:

Release nut (jointed rod on control arm).

Remove jointed rod (1) from control arm.

Disconnect plug connection (2) on ride-height sensor.

Fig 1: Identifying Jointed Rod And Plug Connection

Courtesy of BMW OF NORTH AMERICA, INC.

Unscrew nut (1).

Remove screw towards rear.

Only on right side: If necessary, remove holder with ride-height sensor.

Installation:

Replace self-locking nut.

Tightening torque 31 12 2AZ. . See 31 12 CONTROL ARMS AND STRUTS .

Release nut (2); if necessary, grip at Torx socket.

Take off control arm.

Fig 2: Identifying Nuts

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Keep control arm to swivel bearing connection clean and free from oil and grease.

Replace self-locking nut.

Tightening torque 31 12 6AZ. . See 31 12 CONTROL ARMS AND STRUTS for specs.

After installation:

Perform WHEEL/CHASSIS ALIGNMENT CHECK .
Carry out STEERING ANGLE SENSOR ADJUSTMENT /ADJUSTMENT FOR ACTIVE FRONT STEERING .