Replacing knock sensor (cylinder 3. and 4.) (B48, B46) (Cooper S)

IMPORTANT: Read and comply with NOTES on protection against damage from electrostatic discharge (ESD protection).

Preliminary work needed:

Removal:

Unlock connector (1) and detach.

Remove screw (2).

Remove knock sensor (3).

Courtesy of BMW OF NORTH AMERICA, INC.

Preparation for installation:

Clean contact surface of knock sensor on engine block.

Installation:

Install knock sensor (3).

Tighten screw (2).

Observe tightening torque without fail!

Tightening torque 13 62 3AZ .

Attach connector (1).

Connector (1) must engage audibly.

Courtesy of BMW OF NORTH AMERICA, INC.

Required follow-up work