12 14 610 Removing/replacing right knock sensors (N63)

WARNING: This page is about a different car, the 2013 BMW 550i GT, 2012 BMW 550i GT, 2011 BMW 550i GT, and 2010 BMW 550i GT. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary work

Read out the fault memory of the DME control unit.
Switch off ignition.
Disconnect BATTERY EARTH LEAD.
Remove RIGHT INTAKE PLENUM.

Picture shows left side. Procedure on right side identical.

Unlock and disconnect plugs (1) on both knock sensors.

Release screws on both knock sensors (2).

Remove knock sensors (3).

Fig 1: Identifying Knock Sensors, Connector And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Clean support face of knock sensors on engine block.

Fig 2: Locating Knock Sensors Contact Surface On Engine Block

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Check stored fault message.
Delete fault memory.