11 78 543 Replacing Right Lambda Oxygen Monitor Sensor (N73)

WARNING: This page is about a different car, the 2008 BMW 760Li and 2007 BMW 760Li. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

11 7 030. See 11 7 030 SOCKET WRENCH SOCKET WAF 22

Cylinders 1 to 6.

Necessary preliminary tasks:

Read out fault memory of control unit of Digital Motor Electronics (DME).
Remove automatic transmission underbody protection.

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

Unlock and detach plug connection (1).

Release oxygen monitor sensor (2) with special tool 11 7 030. See 11 7 030 SOCKET WRENCH SOCKET WAF 22

Installation:

Pay attention to cable routing of oxygen control sensor.

Fig 1: Identifying Oxygen Monitor Sensor With Plug Connection

Courtesy of BMW OF NORTH AMERICA, INC.

Tighten down oxygen monitor sensor (2) with special tool 11 7 030. See 11 7 030 SOCKET WRENCH SOCKET WAF 22

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

Installation:

If an oxygen monitor sensor is reused, apply a thin and even coat of Never Seez compound (refer to BMW Parts Service) 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 2: Identifying Special Tool (11 7 030) With Oxygen Monitor Sensor

Courtesy of BMW OF NORTH AMERICA, INC.

Check function of DME.