11 78 610 Remove and install/replace monitoring oxygen sensor
Special tools required:
- 11 7 020
The monitoring oxygen sensor cable is grey (1).
The installation location of the monitoring oxygen sensor is behind the catalytic converter.
Only perform these tasks after exhaust system has cooled down.
Sheared wiring could cause a short circuit.
When disconnecting plugs and plug connections, do not pull on the cables.
Necessary preliminary work:
- Remove CLEAN AIR PIPE
Removal:
Unclip monitoring oxygen sensor connector (1) from the holder.
Unlock and disconnect monitoring oxygen sensor connector (1).
Detach monitoring oxygen sensor cable from the holder in the area marked.
Slightly bend up heat protection film (1).
Remove monitoring oxygen sensor (2) with special tool 11 7 020.
Installation:
Installation note:
If an oxygen sensor is reused, thinly and evenly coat only the thread with Never SEEZ compound Overview of consumables 4.3.
The part of the oxygen control sensor which projects into the exhaust branch (sensor ceramic) must not be cleaned or come into contact with lubricant.
Screw in monitoring oxygen sensor (2) and tighten with special tool 11 7 020.
Tightening torque: 11 78 1AZ .
Properly install heat protection film (1).
Connect monitoring oxygen sensor connector (1) and clip into holder.
Clip monitoring oxygen sensor cable onto holder in area marked.
Required follow-up work:
- Install CLEAN AIR PIPE
- Check function of DME.