BMW 7 Owners & Service Manuals

BMW 7 Series: Active Rear Axle Kinematics

REMOVING AND INSTALLING/RENEWING INTEGRAL ACTIVE STEERING

Necessary preliminary tasks

  • LOWER REAR AXLE SUPPORT
  • Remove BOTH TOE ARMS

IMPORTANT: Screws (1) must not be released during removal!

Active Rear Axle Kinematics
Fig. 118: Identifying Screws

Unlock and disconnect plug connections (1) from steering.

Release screw (2) and remove earth cable.

Tightening torque 33 34 4AZ.

Active Rear Axle Kinematics
Fig. 119: Identifying Plug Connections And Screw

Release screw (1).

Tightening torque 33 34 2AZ.

Release screw (2).

Tightening torque 33 34 1AZ.

Installation: Observe assembly sequence to prevent integral active steering from jamming during installation.

Active Rear Axle Kinematics
Fig. 120: Identifying Screw

Release bolts (1) and remove integral active front steering towards bottom.

Tightening torque 33 34 3AZ.

Installation: Observe assembly sequence to prevent integral active steering from jamming during installation.

Active Rear Axle Kinematics
Fig. 121: Identifying Bolts

IMPORTANT: Observe assembly sequence.

Tighten bolts of integral active steering on rear axle carrier, see picture.

Active Rear Axle Kinematics
Fig. 122: Identifying Integral Active Steering Bolts

After installation

  • Carry out startup of integral active steering with aid of BMW diagnosis system (see Service function/Deflection test).
  • Perform chassis/wheel alignment check.

REMOVING AND INSTALLING/REPLACING CONTROL UNIT FOR REAR AXLE SLIP CONTROL

IMPORTANT: Read and comply with notes on PROTECTION AGAINST ELECTROSTATIC DISCHARGE (ESD PROTECTION).

Necessary preliminary tasks

  • REMOVE BATTERY

Unlock plug connection (1) on control unit (2) and disconnect.

Active Rear Axle Kinematics
Fig. 123: Identifying Plug Connection And Control Unit

Release nut (1) and remove control unit (2).

Tightening torque 33 34 5AZ.

Active Rear Axle Kinematics
Fig. 124: Identifying Nut And Control Unit

After installation

  • Replacement only: Carry out PROGRAMMING/ENCODING

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