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 Connector

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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.

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.

Tightening torque: 11 78 1AZ . See EMISSIONS-CONTROL, LAMBDA OXYGEN SENSOR for specs.

Pay attention to cable routing of control sensor.

Fig 3: Identifying Special Tool (11 7 030) On Control Sensor

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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 Wiring Harness And Heat Shield

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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.