Replacing Left Lambda Oxygen Control Sensor

11 78 530 - Replacing left oxygen control sensor (N62/N62TU)





Special tools required:
- 11 7 030 11 7 030 Socket Wrench Socket WAF 22
- 11 9 150 11 9 150 Special Wrench





(cylinder bank 5 to 8)

Necessary preliminary tasks:
- Switch off ignition
- Remove reinforcement plate Service and Repair





Warning!
Scalding hazard!

Only perform this task on an engine that has cooled down.





Unlock and detach plug connection (3).

Unclip control sensor cable.





Release control sensor (4) with special tool 11 7 030 11 7 030 Socket Wrench Socket WAF 22 in conjunction with 11 9 150 11 9 150 Special Wrench.





Installation:
Threads of new oxygen sensors are already coated with Never-Seez(R) Compound.

If the oxygen sensor is reused, only apply a thin and uniform coat of Never-Seez(R) Compound (refer to BMW Parts Service) to thread.

Oxygen sensor section projecting into exhaust system branch must not be cleaned or come into contact with lubricant.





Installation:
When special tool 11 9 150 11 9 150 Special Wrench is used in conjunction with special tool 11 7 030 11 7 030 Socket Wrench Socket WAF 22, 47 Nm on the torque wrench dial corresponds to an actual tightening torque of 50 Nm.

Tighten down control sensor (4) with special tool 11 7 030 11 7 030 Socket Wrench Socket WAF 22 in conjunction with 11 9 150 11 9 150 Special Wrench.

Tightening torque 11 78 1AZ 11 78 Emissions-Control, Lambda Oxygen Sensor

Pay attention to cable routing of control sensor.





Installation:
Read out fault memory of control unit of Digital Motor Electronics (DME).

Check stored fault messages.

Rectify faults.

Now clear the fault memory.