Remove/install oxygen sensor downstream of catalytic converter

AR07.04-P-0085MFD

Remove/install oxygen sensor downstream of catalytic converter

11.02.2020

Engine

282 in model 118, 177, 247

Shown on model 177 except code ME08 (hybrid drive 75-84 KW VARIANT (INCLUDING PLUGIN))

1

Electrical connector

G3/1

Oxygen sensor downstream of catalytic converter

2

Bracket

 Danger

Risk of death when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC)

Do not touch damaged or defective live component parts and lines or non-insulated electrical connections and lines.Engine 282 in model 118, 177, 247
with code ME08 (Hybrid drive 75-84 kW VARIANT (INCLUDING PLUGIN))

AS00.00-Z-0035-01A

 Warning

Risk of injury. Skin or eye injuries may result when handling hot or glowing objects.

Wear protective gloves, protective clothing and safety glasses, if necessary.

AS00.00-Z-0002-01A

 Caution

Risk of injury caused by scraping or cutting body parts on sharp vehicle parts

Always wear protective gloves when working on or near sharp and non-deburred vehicle parts.
Deburr repair panels.

AS00.00-Z-0017-01A

Topical note

General information on vehicles with high-voltage on-board electrical system and/or lithium-ion battery and/or gaseous-fuel drive system as well as personal protective equipment

Engine 282 in model 118, 177, 247
with code ME08 (Hybrid drive 75-84 kW VARIANT (INCLUDING PLUGIN))

AH00.00-Z-0300-01A

Topical note

Notes on avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A

Topical note

Notes on battery

AH54.10-P-0001-01A

Notes on safety-relevant components

AH00.00-Z-0019-01A

 

Remove/install

1

Remove heat shield for firewall.

Engine 282 in model 118, 177, 247
with code ME08 (Hybrid drive 75-84 kW VARIANT (INCLUDING PLUGIN))

AR49.10-P-0001MFD

2

Release and disconnect electrical connection (1) for oxygen sensor downstream of catalytic converter (G3/1).

3

Unclip the electric line from the holders (2).


Do not kink or crimp the electric line.
Otherwise damage will occur.

4

Unscrew the lambda sensor downstream of the catalytic converter (G3/1) and seal the threaded hole in the catalytic converter with a suitable stop plug.

Note on calculation of tightening torque when using insertion or socket tools with various effective lengths

AH00.00-P-0015-01CW

 Installation: Coat the thread of the oxygen sensor downstream of the catalytic converter(G3/1) with heat-resistant lubricant.

 Oxygen sensor downstream of catalytic converter

*BA14.00-P-1002-02D

Paste, hot lubrication 1 kg, DBL 6879.20

*BR00.45-Z-1005-06A

 Record plug

*129589009100

 Box wrench bit

*000589710300

5

Cover the sensor tip of the lambda sensor downstream of catalytic converter (G3/1) with a clean protective cover.

If the oxygen sensor downstream of the catalytic converter (G3/1) is re-used.

 Set of protective caps

*001589009100

6

Install in the reverse order.



Check

7

Read out and delete fault memory.

If the lambda sensor downstream of the catalytic converter (G3/1) was replaced.



AD00.00-P-2000-06MFA

 Warning

Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.

Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.

AS00.00-Z-0005-01A

8

Perform engine test run and check exhaust system for leaktightness.

 Oxygen sensor

Number

Designation

Engine 282

BA14.00-P-1002-02D

Oxygen sensor downstream of catalytic converter

Nm

50

Repair materials

Number

Designation

Order number

BR00.45-Z-1005-06A

Paste, hot lubrication 1 kg, DBL 6879.20

A 000 989 76 51