13 62 622 Remove and install or replace the nitrogen oxide sensor after SCR catalytic converter (N57 D30 O/T 1 with SCR)
Special tools required:
WARNING:
Risk of burning!
Only perform this repair work on an engine that has cooled down.
Only perform this repair work on an engine that has cooled down.
Necessary preliminary tasks:
- Read out the fault memory of the DDE control unit.
- Switch off ignition.
- Partially detach rear UNDERBODY PROTECTION
Detach nitrogen oxide sensor (1) and remove from exhaust system.
Tightening torque 13 62 11AZ .
Release screw (1).
Partially detach underbody panelling.
Unlock connector (1) and remove.
Unscrew nuts (2).
Tightening torque 13 62 12AZ .
Feed the nitrogen oxide sensor and control unit (3) for the nitrogen oxide sensor out and remove.
Installation note:
Check stored error/fault messages.
Clear diagnostic fault entries from fault memory.