11 78 530 Replacing Lambda control sensor, left (M62)

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2003 BMW 540i, 2002 BMW 540i, 2001 BMW 540i, 2000 BMW 540i, and 1999 BMW 540i. However, it is still accessible from the selected car via links, so may be relevant.

(See 13 00 002 CHECKING FUNCTION OF DIGITAL ENGINE ELECTRONICS (DME) )

Read out fault memory, clear if necessary.

Unclip Lambda control sensor cable from retainer.

Disconnect plug connection for Lambda control sensor.

Release Lambda control sensor with special tool 11 7 030.

Fig 1: Releasing Lambda Control Sensor With Special Tool

Courtesy of BMW OF NORTH AMERICA, INC.

Installation

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

If an oxygen sensor is used again, apply a thin and even coat of Never Seez Compound to the thread only.

Do not clean the oxygen sensor section which protrudes into the exhaust line and ensure that it avoids all contact with lubricants.

Installation

Secure Lambda control sensor with special tool 11 7 030.

Tightening torque, refer to 11 79 1AZ in ENGINE - TIGHTENING TORQUES - 540i .

Pay attention to cable routing of Lambda control sensor.