11 78 613 Replacing both oxygen monitor sensors (M52TU / M54 / M56)

WARNING: This page is about a different car, the 2003 BMW X5, 2002 BMW X5, and 2001 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

For Special Tool identification, see SPECIAL TOOLS - X5 (3.0i) .

Special Tools Required:

11 7 020
11 7 030

Read out fault memory, clear if necessary.

Refer to 13 00 002 CHECKING FUNCTION OF DIGITAL ENGINE .

Illustrations show M54.

Remove cover from fuel injectors.

NOTE: Do not mix up oxygen monitor sensors for cylinders 1 to 3 and 4 to 6 at plug connection to wiring harness.

Mark plug connections.

Fig 1: Removing Cover From Fuel Injectors

Courtesy of BMW OF NORTH AMERICA, INC.

Unclip the cable from the retainer. Disconnect plug. Unclip cable on rear side of engine from cable guide.

NOTE: On vehicles with automatic transmission: In event of unfavorable tolerances, accessibility to the oxygen monitor sensor from cylinders 4 to 6 is only possible after the exhaust system has been removed.

Release oxygen monitor sensor from cylinders 1 to 3 with special tool 11 7 030 .

Release oxygen monitor sensor from cylinders 4 to 6 with special tool 11 7 020 .

Fig 2: Identifying Oxygen Monitor Sensor

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

The threads of new oxygen monitor sensors are already coated with Never Seez compound.

If an oxygen monitor sensor is reused, only apply a thin and uniform coat of Never Seiz compound to thread.

Part of oxygen control sensor which projects into exhaust system branch must not be cleaned or come into contact with lubricant.

Installation:

Secure oxygen monitor sensor for cylinders 1 to 3 with special tool 11 7 030 .

Secure oxygen monitor sensor for cylinders 4 to 6 with special tool 11 7 020 .

Tightening torque, (20 N.m.).

Fig 3: Identifying Socket Wrench Socket WAF 22

Courtesy of BMW OF NORTH AMERICA, INC.

Cover oxygen monitor sensors when applying underseal.

Pay attention to cable routing of oxygen monitor sensors.