11 78 510 Replacing oxygen control sensor (N55 hybrid car)

Special tools required:

11 7 030
11 9 150
11 4 260

WARNING: Compliance with the following points is mandatory before beginning work:

Observe SAFETY INFORMATION for working with electric vehicles.

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 a 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 system branch (sensor ceramics) must not be cleaned and not coated with lubricant.

Necessary preliminary work:

Remove rear ignition coil cover. See 11 12 040 REMOVING AND INSTALLING ALL IGNITION COIL AND INJECTOR WELLS (N55 HYBRID) .

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 1: Identifying Plug Connection Of Monitoring Sensor

Courtesy of BMW OF NORTH AMERICA, INC.

Unclip cable (1) of control sensor out of holder.

Fig 2: Identifying Control Sensor Cable

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 With Special Tool (11 4 260)

Courtesy of BMW OF NORTH AMERICA, INC.

Reassemble the vehicle.

Check function of DME.