Replacing oxygen sensor - RA07041045303X (07.4-5303)

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Operation No. of operation texts and operation values or standard texts and flat rates

07-5303

Fig 1: Identifying Oxygen Sensor

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Oxygen sensor plug connection (G3/2x1)	detach, fit on. NOTE: Turn union nut to the left as far as stop → open Turn union nut to the right as far as stop → lock
Oxygen sensor (G3/2)	unscrew, screw in. Special tool 000 589 71 03 00. Installation instruction Coat thread of oxygen sensor (G3/2) with hot lubricating paste, Part No. 000 989 88 51. Tightening torque 50 - 60 Nm as reference value.
Lambda control	test (see Diagnosis Manual Engine, Volume 1, Testing, adjusting engine).
LH control unit fault memory	read, erase if necessary (see Diagnosis Manual Engine, Volume 2, Index 0).

Special tool

Fig 2: Identifying Special Tool (000 589 71 03 00 83)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.