BMW 7 Owners & Service Manuals

BMW 7 Series: Replacing Left Control Sensor (N63)

Notes

WARNING: Risk of burning! Only perform this work after engine has cooled down.

Necessary preliminary work

  • Check function of DME control unit
  • Switch off ignition
  • Remove AIR FILTER HOUSING

Unlock plug connection and detach.

Unclip control sensor cable at retaining clips.

Release control sensor with special tool 11 7 020.

Emission Control, Oxygen Sensor
Fig. 527: Releasing Control Sensor Using Special Tool 11 7 020

Installation note: The threads of new lambda control/monitoring sensors are already coated with Never Seez Compound (refer to BMW Parts Department).

If a lambda control/monitoring 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/monitoring sensor which projects into the exhaust branch (sensor ceramics) must not be cleaned and not coated with lubricant.

Secure control sensor with special tool 11 7 020 and a torque wrench (1).

Tightening torque 11 78 1AZ.

Emission Control, Oxygen Sensor
Fig. 528: Securing Control Sensor Using Special Tool 11 7 020 And Torque Wrench

Installation note: Check function of DME control unit.

Pay attention to cable routing of control sensor.

REPLACING LEFT MONITOR SENSOR (N63)

Notes

WARNING: Risk of burning! Only perform this work after engine has cooled down.

Necessary preliminary work

  • Check function of DME control unit
  • Switch off ignition
  • Remove AIR FILTER HOUSING

Release retaining clip (1).

Remove heat shield wire ring (2) over oxygen sensor.

Detach oxygen sensor cable from retaining clips (3).

Emission Control, Oxygen Sensor
Fig. 529: Identifying Heat Shield Wire Ring And Retaining Clips

Release monitoring sensor (1) with special tool 11 7 020.

Emission Control, Oxygen Sensor
Fig. 530: Releasing Monitoring Sensor Using Special Tool 11 7 020

Installation note: The threads of new lambda control/monitoring sensors are already coated with Never Seez Compound (refer to BMW Parts Department).

If a lambda control/monitoring 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/monitoring sensor which projects into the exhaust branch (sensor ceramics) must not be cleaned and not coated with lubricant.

Fasten monitoring sensor (1) with special tool 11 7 020.

Tightening torque 11 78 1AZ.

Emission Control, Oxygen Sensor
Fig. 531: Tightening Monitoring Sensor Using Special Tool 11 7 020

Installation note: Check function of DME control unit.

Pay attention to cable routing of monitor sensor.

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