Replacing Right Oxygen Monitor Sensor (S85)

11 78 543 - Replacing right oxygen monitor sensor (S85)





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





Warning!
Scalding hazard!

Only perform these tasks after exhaust system has cooled down.





Necessary preliminary tasks:
- Read out fault memory in Digital Motor Electronics (DME).
- Remove transmission underbody protection.





Remove oxygen monitor sensor (1) with special tool 11 7 030 11 7 030 Socket Wrench Socket WAF 22.

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

The part of the the oxygen monitor sensor which projects into the exhaust system branch (sensor ceramic) must not be cleaned or come into contact with lubricant.





Check function of DME.