11 78 543 Replacing Right Monitor Sensor

11 78 543 Replacing right monitor sensor (N63)

Special tools required:





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 (2) over oxygen sensor.

Detach oxygen sensor cable from retaining clips (3).





Release monitoring sensor (1) with 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.





Installation note:
Check function of DME control unit.

Pay attention to cable routing of monitor sensor.