11 78 543 Replacing right lambda oxygen monitor sensor (S65)

Special tools required:

11 7 030

See ENGINE - SPECIAL TOOLS .

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.

Disconnect plug connection (1).

Remove oxygen monitor sensor with special tool 11 7 030 .

Installation:

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

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

Fig 1: Removing Oxygen Monitor Sensor With Special Tool (11 7 030)

Courtesy of BMW OF NORTH AMERICA, INC.

Secure oxygen monitor sensor with special tool 11 7 030 and a torque wrench.

Tightening torque: 11 78 1AZ . See EMISSION CONTROL .

Check function of DME.