12 14 600 Removing/replacing knock sensor (3rd and 4th cylinder) (N20, N26)

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2016 BMW 328i xDrive, 2016 BMW 328d xDrive, 2015 BMW 328i xDrive, 2015 BMW 328d xDrive, and 2014 BMW 328i xDrive. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Read out the fault memory of the DME control unit.
Switch off ignition.
Remove STARTER MOTOR .

Unlock connector (1) and remove.

Release bolt (2) on knock sensor.

Tightening torque 13 62 4AZ .

Remove knock sensor for 3rd and 4th cylinders.

Fig 1: Identifying Knock Sensor Bolt

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Clean contact surface of knock sensor on engine block.

Fig 2: Locating Engine Block Knock Sensors Contact Surface

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Reassemble the vehicle.
Check stored fault message.
Delete fault memory.