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HOMESERVICE MANUALSBMW2009Z4 35I, AUTOMATIC DCTREPAIR AND DIAGNOSISENGINE PERFORMANCEENGINE CONTROL SYSTEMSENGINE - REPAIR (N54)EMISSION CONTROL, OXYGEN SENSOR11 78 513 REPLACING BOTH OXYGEN CONTROL SENSORS (N54, N54T)
2009 BMW Z4 35i, Automatic DCT

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

2009 BMW Z4 35i, Automatic DCTSECTION 11 78 513 Replacing both oxygen control sensors (N54, N54T)
WARNING: Risk of burning! 

Work should only be carried out on an exhaust system that has cooled down.

Necessary preliminary tasks: 

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

Installation note: 

If an oxygen sensor is reused, only apply a thin and uniform coat of Never Seez Compound (refer to BMW Parts Service) to thread.

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

Remove protective plate over steering gear.

Release screws (1) and remove protective plate (2).

Fig 1: Identifying Protective Plate And Screws
G06904443Courtesy of BMW OF NORTH AMERICA, INC.

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 color black, cylinders 1 to 3.

Fig 2: Identifying Special Tool 11 7 030 And 11 9 150
G04755076Courtesy of BMW OF NORTH AMERICA, INC.

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 color grey, cylinders 4 to 6.

Fig 3: Removing Oxygen Control Sensor Using Special Tools 11 7 030 And 11 9 150
G04755077Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Check function of DME control unit.

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.