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Home >> Mercedes Benz >> 2020 >> SLC43 AMG Base >> Repair and Diagnosis >> Engine Mechanical >> Blowers, Superchargers & Turbochargers >> Mixture Formation - 172 Chassis >> Testing & Repair >> Remove/Install Left Oxygen Sensor Downstream Of Catalytic Converter - AR07.04-P-0082WA

Remove/Install Left Oxygen Sensor Downstream Of Catalytic Converter - AR07.04-P-0082WA

Engine 276.8 in model 172 

Fig 1: Left Oxygen Sensor Downstream Of Catalytic Converter Components Location - Engine 276.8 In Model 172
G13845383Courtesy of MERCEDES-BENZ USA
  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
  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
REMOVINGINSTALLING Remove/install     
1 Switch off ignition and store transmitter key outside of transmission range (at least 2m)    
2 Remove rear lower engine compartment paneling   AR61.20-P-1105W
3 Unclip electrical connection (6) from bracket    
4 Release and disconnect electrical connection (6)    
5 Unclip retaining clip (4)    
6 Remove left oxygen sensor downstream of catalytic converter (5) INSTALLATION IMPORTANT : Coat thread with heat-resistant lubricant.
Paste, hot lubrication 1 kg, DBL 6879.20
*BR00.45-Z-1005-06A 
TORQUE SPECIFICATION Oxygen sensor at catalytic converter *BA14.00-P-1002-01A 
SPECIAL TOOL Box wrench bit Fig 2
7 Install in the reverse order    
8 Read out fault memory using the diagnostic system and clear if necessary    
REFER TO SELF-DIAGNOSTIC SYSTEMS     AD00.00-P-2000-04A
9 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.
Carry out an engine test run and check exhaust system for leak tightness
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
OXYGEN SENSOR

Number Designation Engine 276
BA14.00-P-1002-01A Oxygen sensor at catalytic converter Nm 50
Fig 2: Identifying Box Wrench Bit (000 589 71 03 00)
G13845384Courtesy of MERCEDES-BENZ USA
REPAIR MATERIALS

Number Designation Order number
BR00.45-Z-1005-06A Paste, hot lubrication 1 kg, DBL 6879.20 A 000 989 76 51