Installing knock sensor of cylinders 1 to 3

• Clean the contact surface of the knock sensor at the crankcase.
• Insert and install the knock sensor (3)  .
• Tighten down screw (2)  .

Courtesy of BMW OF NORTH AMERICA, INC.

• Connect connectors (1)  and lock.

The connector (1)  must engage audibly.

Follow-up work 

• Refer to INSTALLING ALTERNATOR .
• Refer to INSTALLING FAN COWL .
• Refer to CONNECTING THE COOLANT LINE TO THE RADIATOR .
• Refer to INSTALLING THE RIGHT INTAKE FILTER HOUSING (FRONT-END STRUT REMOVED) .
• Refer to INSTALLING THE REAR TOP CROSS CONNECTION .
• Refer to INSTALLING UPPER CROSS CONNECTION .
• Refer to INSTALLING THE CENTER ENGINE COMPARTMENT COVER .
• Refer to INSTALLING THE FRONT HOOD SEAL .
• Refer to INSTALLING THE CLEAN AIR PIPE FOR CYLINDERS 1 TO 3 .
• Refer to INSTALLING THE FRONT-END STRUT .
• Refer to CONNECTING ALL BATTERY GROUND LEADS .
• Refer to FILLING AND VENTING THE HIGH-TEMPERATURE COOLANT CIRCUIT .
• Refer to INSTALLING THE BOTTOM FRONT RIGHT SIDE COVER .
• Refer to INSTALLING THE STIFFENING PLATE .
• Refer to INSTALLING THE LEFT AND RIGHT FRONT UNDERSHIELD .
• Refer to INSTALLING FRONT UNDERBODY PROTECTION .
• Refer to INSTALLING THE FRONT SPOILER .