18 00 020 Removing and installing complete exhaust system (S63)

Special tools required: 

• 31 2 220

Necessary preliminary tasks: 

• Remove rear UNDERBODY PROTECTION .
• Remove STIFFENING PLATE
• Remove REINFORCEMENT PLATE from rear axle.

Support exhaust system with jack and special tool 31 2 220 or with a suitable lever and secure against falling down.

Fig 1: Supporting Exhaust System With Special Tool (31 2 220)

Courtesy of BMW OF NORTH AMERICA, INC.

Picture shows the left side, the procedure for the right side is identical.

Unscrew nuts (1).

Replace self-locking nuts.

Tightening torque 18 31 1AZ .

Fig 2: Identifying Flange Nuts

Courtesy of BMW OF NORTH AMERICA, INC.

Unscrew nuts (1).

Tightening torque 18 20 1AZ .

Fig 3: Identifying Nuts

Courtesy of BMW OF NORTH AMERICA, INC.

Unscrew nuts (1).

Tightening torque 18 20 3AZ .

Unfasten screws (2).

Tightening torque 51 61 17AZ .

Release screws (3).

Tightening torque 18 20 6AZ .

Feed out and remove reinforcement plate (4).

Fig 4: Identifying Reinforcement Plate, Nuts And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Picture shows the left side, the procedure for the right side is identical.

Unscrew nuts (1).

Tightening torque 18 20 4AZ .

Remove earth strap (2).

Fig 5: Identifying Earth Strap And Nuts

Courtesy of BMW OF NORTH AMERICA, INC.

Picture shows the left side, the procedure for the right side is identical.

Detach hose (1) on vacuum unit.

Slacken nut (2).

Tightening torque 18 20 5AZ .

Lower and remove exhaust system with assistance of a second person.

Fig 6: Identifying Vacuum Unit Hose And Nut

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note: 

Check rubber mount for damage.

If necessary, replace damaged rubber mounts.

Check exhaust system for leak tightness.