11 78 543 Replacing right monitoring sensor (N63O1) REP-REP-RAF1511N63O1-1178543 - V.4 (X6 xDrive 50i)

Special tools required: 

• 11 7 020 

Necessary preliminary tasks: 

• Check function of DME control unit.
• Switch off Ignition.
• Remove ACOUSTIC COVER .

Remove HOLDER for engine wiring harness.

Overview: 

1. Monitoring sensor, right
2. Monitoring sensor, left
3. Control sensor, left
4. Control sensor, right

Courtesy of BMW OF NORTH AMERICA, INC.

Release retaining clip (1).

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

Courtesy of BMW OF NORTH AMERICA, INC.

Release monitoring sensor (1) with 11 7 020  reversible ratchet (2) special tool.

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note: 

The threads of new oxygen control/monitoring sensors are already coated with 4.2 NEVER-SEEZ COMPOUND (refer to applicable BMW Parts Catalog).

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 .

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note: 

Check function of DME control unit.

Pay attention to cable routing of monitor sensor.