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.

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.

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).

Fig. 529: Identifying Heat Shield Wire Ring And Retaining Clips

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

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.

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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