31 12 000 Removing and installing/replacing left or right control arm: Notes

WARNING: This page is about a different variant/trim than selected.

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

Except M3:

Except M3:

If necessary, remove jointed rod of ride-height sensor from control arm.

Fig 1: Locating Jointed Rod Of Ride-Height Sensor

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M3 only:

Slacken nut (1).

Remove jointed rod (2) from control arm.

Installation:

Sensor lever (3) must point from ride-height sensor to left front wheel.

Tightening torque 37 14 3AZ .

Fig 2: Identifying Jointed Rod And Ride Height Sensor Lever With Nut

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Release nut (1); if necessary, grip at Torx socket (T40).

Installation:

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

Replace self-locking nut.

Tightening torque 31 12 4AZ .

Fig 3: Identifying Control Arm Nut

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Slacken nut (1).

Remove screw towards front; if necessary remove bracket (2) with ride-height sensor.

Take off control arm.

Installation:

Screw head must point in direction of travel.

Replace self-locking nut.

Tighten down bolt connection in NORMAL POSITION .

Tightening torque 31 12 3AZ .

Fig 4: Identifying Ride-Height Sensor Bracket And Nut

Courtesy of BMW OF NORTH AMERICA, INC.