13 62 651 Removing/replacing oxygen sensor (N47 D20 O 1 with SCR)
Special tools required:
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.
- Remove ACOUSTIC COVER
Disconnect connector (1) and release from bracket.
Release oxygen sensor cable from clamp (2).
Remove oxygen sensor (3) with special tool 11 7 020 .
Tightening torque: 13 62 3AZ .
Installation note:
Threads of new oxygen sensors are already coated with NEVER-SEEZ compound.
If an oxygen sensor is reused, only apply a thin and uniform coat of Never Seez Compound to thread.
Oxygen sensor section projecting into exhaust branch must not be cleaned or come into contact with lubricant.
Pay attention to cable routing of oxygen sensors.
11 7 020 Use special tool to tighten down oxygen sensor.
Tightening torque: 13 62 3AZ .
Cover oxygen sensors when applying underbody protection.
Installation note:
Check stored error/fault messages.
Clear diagnostic fault entries from fault memory.