12 14 602 Removing/replacing knock sensor (1st and 2nd 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 THROTTLE VALVE ASSEMBLY .

Unlock connector (1) and remove.

Release bolt (2) on knock sensor.

Tightening torque 13 62 4AZ .

Remove knock sensor for 1st and 2nd cylinder.

Fig 1: Identifying Knock Sensor Bolt

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Clean contact surface of knock sensors on engine block.

Fig 2: Locating Knock Sensors Contact Surface On Engine Block

Courtesy of BMW OF NORTH AMERICA, INC.

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