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

WARNING: This page is about a different car, the 2005 BMW 545i and 2004 BMW 545i. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

For Special Tool identification, see ENGINE - SPECIAL TOOLS - 5-SERIES (E60) .

Special Tools Required:

11 7 030

Necessary Preliminary Tasks:

Switch off ignition.
Remove rear underbody protection. Refer to 51 47 491 REMOVING AND INSTALLING/REPLACING REAR UNDERBODY PROTECTION .

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

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

Unclip oxygen monitor sensor cable.

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

Fig 1: Locating Plug Connection For Oxygen Monitor Sensor

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Threads of new oxygen sensors are already coated with Never Seez compound.

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

Tightening torque, refer to 11 78 1AZ in ENGINE - TIGHTENING TORQUES - 545I (4.4L) E60 .

Pay attention to cable routing of oxygen monitor sensor.

Fig 2: Installing Oxygen Monitor Sensor

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.