12 14 600 Removing/replacing knock sensors (N52T)

WARNING: This page does not describe the selected car, but rather 50 other vehicles, including the 2016 BMW M5, 2016 BMW ActiveHybrid 5, 2016 BMW 550i xDrive, 2016 BMW 550i, and 2016 BMW 535i xDrive. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: Aluminum-magnesium materials .
No steel screws/bolts may be used due to the threat of electrochemical corrosion.
A magnesium crankcase requires aluminum screws/bolts exclusively.
Aluminum screws/bolts must be replaced each time they are released .
Aluminum screws/bolts are permitted with and without color coding (blue).
For reliable identification:
Aluminum screws/bolts are not magnetic .
Jointing torque and angle of rotation must be observed without fail (risk of damage) .

Necessary preliminary work:

Read out the fault memory of the DME control unit.
Switch off ignition.
Remove INTAKE PLENUM .

Unlock connector (1) and remove.

Fig 1: Identifying Connector

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Release screws on both knock sensors (1) and remove knock sensors (1).

Installation note:

Replace aluminum screws .

Tightening torque 13 62 3AZ .

Fig 2: Locating Knock Sensors

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Installation note:

Clean contact surface of knock sensors on engine block.

Fig 3: Cleaning Contact Surface Of Knock Sensors On Engine Block

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NOTE: Check stored fault messages.
Clear diagnostic fault entries from fault memory.