11 78 533 Replacing right oxygen control sensor (S85)

Special tools required:

11 7 030

WARNING: Scalding hazard!
Only perform these tasks after exhaust system has cooled down.

Necessary preliminary tasks:

Read out fault memory in Digital Motor Electronics (DME).
Remove transmission underbody protection.

Unclip oxygen sensor cable (1).

Release screws (2).

Remove cover (3).

Fig 1: Identifying Oxygen Sensor Cable, Cover And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Remove plug connection (1) from holder (2).

Disconnect plug connection (1).

Fig 2: Identifying Oxygen Sensor Plug Connection And Holder

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Remove oxygen control sensor with special tool 11 7 030.

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

The part of the oxygen control sensor which projects into the exhaust system branch (sensor ceramic) must not be cleaned or come into contact with lubricant.

Secure oxygen control sensor with special tool 11 7 030 and a torque wrench (1).

Tightening torque: 11 78 1AZ .

Fig 3: Removing Oxygen Control Sensor Using Special Tool (11 7 030)

Courtesy of BMW OF NORTH AMERICA, INC.

Add final details to vehicle.

Check function of DME.