11 78 543 Replacing right oxygen monitor sensor (N62/N62TU)

WARNING: This page is about a different car, the 2010 BMW 550i, 2009 BMW 550i, and 2008 BMW 550i. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

11 7 030 . See ENGINE- SPECIAL TOOLS .

(cylinder bank 1 to 4)

Necessary preliminary tasks:

Switch off ignition
Remove REAR UNDERBODY PROTECTION .

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

Unlock and detach plug connection (1) for monitor sensor (2).

Unclip monitor sensor cable.

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

Fig 1: Identifying Plug Connection And Monitor Sensor

Courtesy of BMW OF NORTH AMERICA, INC.

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 monitor sensor (2) with special tool 11 7 030.

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

Pay attention to cable routing of monitor sensor.

Fig 2: Tightening Monitor Sensor With Special Tool (11 7 030)

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

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

Check stored fault messages.

Rectify faults.

Now clear the fault memory.