Remove/install heated O2 sensor - AR07.52-P-5303TY

ENGINE 113.967 in MODEL 219.375 

ENGINE 113.990 in MODEL 219.376 

Shown on model 219.375 

Fig 1: Identifying Heated O2 Sensor Remove/Install Components - Shown On Model 219.375

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Risk of death  caused by vehicle slipping or toppling off the lifting platform.	Align vehicle between columns of lifting platform and position four support plates at the lifting platform support points specified by vehicle manufacturer.	AS00.00-Z-0010-01A
	Risk of injury  to skin and eyes caused by handling hot or glowing objects.	Wear safety gloves, protective clothing and safety glasses, if necessary.	AS00.00-Z-0002-01A
	Information on preventing damage to electronic components due to electrostatic discharge	All models	AH54.00-P-0001-01A
1	Turn key in ignition lock to position "0"	On vehicles with Keyless-Go, code 889: Press keyless go start/stop button repeatedly until ignition is switched off Remove the Keyless Go transmitter card or transmitter key from vehicle and store beyond reach of the transmitter (at least 2 m).
2	Raise vehicle with vehicle lift		AR00.60-P-1000TX
3	Remove rear section of lower engine compartment paneling	Install engine compartment paneling only after engine test run.	AR61.20-P-1105TX
4	Unclip electrical connector and electrical feed line for corresponding O2 sensor out of retaining clamps on transmission
5	Disconnect electrical connector for corresponding O2 sensor
6	Remove corresponding O2 sensor out of the catalytic converter completely	Coat thread with heat- resistant lubricant.
			*BA14.00-P-1001-01A
		Box wrench bit	Figure
		Paste	*BR00.45-Z-1005-06A
7	Install in the reverse order
8	Read out fault memory	Stored fault entries which may be caused by disconnecting cables or by simulation during removal and installation or inspection operations, must be erased from the fault memory after work is completed.
	Connect STAR DIAGNOSIS and read out fault memory		AD00.00-P-2000-04A
		STAR DIAGNOSIS, diagnosis system
	Risk of accident  caused by vehicle starting off by itself when engine is running. Risk of injury  caused by contusions and burns during starting procedure or when working near the engine as it is running	Secure vehicle to prevent it from moving by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.	AS00.00-Z-0005-01A
9	Test run engine and check exhaust system for leaks

Fig 2: Identifying Box Wrench Bit (000 589 71 03 00)

Courtesy of MERCEDES-BENZ USA