11 78 610 Replacing oxygen monitoring sensors (N20)
WARNING: This page is about a different variant/trim than selected.
Special tools required:
- 11 4 260
WARNING:
Risk of burning!
Work should only be carried out on an exhaust system that has cooled down.
Work should only be carried out on an exhaust system that has cooled down.
Installation note:
The threads of new oxygen monitoring sensors are already coated with NEVER SEEZ COMPOUND 4.3 (refer to BMW Parts Department).
If a lambda monitoring sensor is to be reused, apply a thin and even coating of Never Seez Compound to the thread only.
Sensor ceramics must not be cleaned and not be coated with lubricant.
Disconnect plug connection (1) of the oxygen sensors.
IMPORTANT:
When using special tool 11 4 260, it is essential to reduce the prescribed tightening torque by 3 Nm.
Release oxygen monitoring sensor with special tool 11 4 260 with a suitable extension.
Tightening torque 11 78 2AZ .
Reassemble the vehicle.
Check function of DME.