Removal & Installation (6-Cylinder)

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Remove air intake ducting. Disconnect electrical connection from retainer at cable duct. See Fig 1. Remove bolt from knock sensor for cylinders No. 1-3, and bolt from knock sensor for cylinders No. 4-6. See Fig 2 and Fig 3 . Remove knock sensors, located on side of engine block. To install, reverse removal procedure. Clean knock sensor contact surface. When tightening knock sensors, ensure sensor and wiring do not interfere or chafe on brackets or other components. See TORQUE SPECIFICATIONS .

Fig 1: Locating Knock Sensor Electrical Connector (6-Cyl.)

Courtesy of BMW OF NORTH AMERICA, INC.

Fig 2: Removing Knock Sensor (Cylinders No. 1-3) (6-Cyl.)

Courtesy of BMW OF NORTH AMERICA, INC.

Fig 3: Removing Knock Sensor (Cylinders No. 4-6) (6-Cyl.)

Courtesy of BMW OF NORTH AMERICA, INC.