11 78 510 Replacing oxygen control sensor (N55)

WARNING: This page is about a different car, the 2013 BMW X5, 2012 BMW X5, and 2011 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

11 4 260

WARNING: Risk of burning!
Work should only be carried out on an exhaust system that has cooled down.

Installation note:

The threads of new oxygen control sensors are already coated with NEVER-SEEZ compound.

If an oxygen control sensor is to be reused, apply a thin and even coating of NEVER-SEEZ compound to the thread only.

The part of the lambda control sensor which projects into the exhaust branch (sensor ceramics) must not be cleaned and not coated with lubricant.

Necessary preliminary work:

Remove rear ignition coil cover. See 12 REMOVING AND INSTALLING/REPLACING IGNITION COIL COVER (N55) .
Remove MICROFILTER HOUSING .

Lever out expanding rivet.

Remove gasket (1).

Unfasten screws (2).

Feed out partition wall (3) and remove.

Fig 1: Locating Partition Wall And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug connection on oxygen control sensor (1).

Installation note:

Cable color of oxygen control sensor = black.

Cable color of oxygen monitoring sensor = grey.

Fig 2: Identifying Plug Connection On Oxygen Control Sensor

Courtesy of BMW OF NORTH AMERICA, INC.

Release oxygen sensor (1) from above with special tool 11 4 260 .

Tightening torque: 11 78 1AZ .

Fig 3: Releasing Oxygen Sensor Using Special Tool (11 4 260)

Courtesy of BMW OF NORTH AMERICA, INC.

Reassemble the vehicle.

Check function of DME.