11 78 533 Replacing right oxygen control sensor (N62/N62TU)

Special tools required:

(cylinder bank 1 to 4)

Necessary preliminary tasks:

WARNING: Scalding hazard!
Only perform this task on an engine that has cooled down.

Release plug connector (1) and pull off.

Unclip control sensor cable.

Fig 1: Identifying Plug Connection

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Release control sensor (2) with special tool 11 7 030.

Fig 2: Identifying Control Sensor

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Installation:

Threads of new oxygen sensors are already coated with Never Seez Compound.

If the oxygen sensor is reused, only apply a thin and uniform coat of Never Seez Compound to thread.

Oxygen sensor section projecting into exhaust system branch must not be cleaned or come into contact with lubricant.

Installation:

Tighten down control sensor (2) with special tool 11 7 030.

Pay attention to cable routing of control sensor.

Fig 3: Tightening Control Sensor With Special Tool (11 7 030)

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Installation:

Different heat shields!

To prevent fraying, make sure that wiring harness (1) is correctly laid on heat shield (2).

Fig 4: Identifying Heat Shield And Wiring Harness

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Installation:

Read out fault memory of control unit of Digital Motor Electronics (DME).

Check stored fault messages.

Rectify faults.

Now clear the fault memory.