13 62 651 Replacing control sensor (M57T2)

Special tools required

Necessary preliminary tasks

Read out fault memory of DDE control unit; if necessary, work through test schedules
Switch off ignition
E83 only: Release windscreen washer fluid reservoir

WARNING: Scalding hazard!
Only perform this task on an engine that has cooled down.

Unlock plug connection and pull out of guide.

Unlock plug (1) and remove.

Fig 1: Unlocking Plug Connection

Courtesy of BMW OF NORTH AMERICA, INC.

Unclip cable.

Release oxygen sensor (1) with special tool 11 7 020 .

Installation:

Tightening torque 11 78 1AZ .

Fig 2: Identifying Oxygen Sensor

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

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 system branch must not be cleaned or come into contact with lubricant.

Pay attention to cable routing of oxygen sensors.

Cover oxygen sensors when applying underseal.

Installation:

Now clear the fault memory.