11 78 513 Replacing Both Oxygen Control Sensors

11 78 513 Replacing both oxygen control sensors (N54, N54T)

Special tools required:





Warning!
Risk of burning!
Work should only be carried out on an exhaust system that has cooled down.

Necessary preliminary work:
^ E60, E61





^ E82, E88
^ E90, E91, E92, E93

Necessary preliminary work, all-wheel drive vehicles:
^ E60, E61
^ E90, E91, E92

Note:
It is not necessary to conduct a wheel alignment check when the track rod is released.





Installation note:
If an oxygen sensor is to be reused, only apply a thin and uniform coat of NEVERSEEZ compound (refer to BMW Parts Department) to thread.

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





Disconnect plug connection for oxygen control sensor, cylinders 1 to 3.

Release oxygen control sensor (1) with special tools 11 7 030 and 11 9 150.

Important!
When using special tool 11 7 030 in conjunction with special tool 11 9 150, it is essential to reduce the prescribed tightening torque by 3 Nm.

Tightening torque 11 78 1AZ.

Installation note:
Cable colour black, cylinders 1 to 3.





Disconnect plug connection for oxygen control sensor, cylinders 4 to 6.

Release oxygen control sensor (1) with special tools 11 7 030 and 11 9 150.

Important!
When using special tool 11 7 030 in conjunction with special tool 11 9 150, it is essential to reduce the prescribed tightening torque by 3 Nm.

Tightening torque 11 78 1AZ.

Installation note:
Cable colour grey, cylinders 4 to 6.





Assemble engine.
Check function of DME control unit.