Remove/install electrohydraulic controller unit (transmission installed) - AR27.19-P-0200EWM

TRANSMISSION 725.0 

Shown on MODEL 212 

Fig 1: Electrohydraulic Controller Unit Remove/Install Components (Transmission Installed) - Shown On Model 212 (1 Of 2)

Courtesy of MERCEDES-BENZ USA

Fig 2: Electrohydraulic Controller Unit Remove/Install Components (Transmission Installed) - Shown On Model 212 (2 Of 2)

Courtesy of MERCEDES-BENZ USA

	Risk of death  caused by vehicle slipping or toppling off of the lifting platform.	Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer.	AS00.00-Z-0010-01A
	Notes on self-locking nuts and bolts		AH00.00-N-0001-01A
	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Notes on automatic transmission		AH27.19-P-0001-01NKB
	Remove/install
1	Switch off ignition and remove transmitter key
2	Remove heat shield above transmission connector (4)	TRANSMISSION 725.0 in MODEL 166, 172, 205, 207, 212, 217, 218, 222
		TRANSMISSION 725.0 in MODEL 212	AR27.40-P-0700-01EW
		Screw/bolt, heat shield to oil pan	*BA27.10-P-1009-04H
3	Detach electrical connections from transmission connection (4)	Clean transmission connection (4) and electrical connection on fully integrated transmission control controller unit (Y3/8).
4	Remove automatic transmission oil pan		AR27.10-P-7030EWM
		Replace automatic transmission oil pan.
5	Unscrew screws/bolts (2, 3) and remove fully integrated transmission control controller unit (Y3/8)	Make sure that the contact pins (6) of the selector lever lock are not damaged. Otherwise, the selector lever lock may malfunction. If fully integrated transmission control controller unit (Y3/8) is jammed, pry it off transmission housing (1) carefully using a suitable tool with sealing surfaces covered up. Otherwise the fully integrated transmission control controller unit (Y3/8) or the sealing surfaces on transmission housing (1) may get damaged. Replace screw/bolts (2, 3). Check oil guide pipes (7a, 7b) and sealing rings (4a, 5) for damage, replace, if necessary. Insert oil guide pipes (7a, 7b) into fully integrated transmission control controller unit (Y3/8).
		Screw/bolt, auxiliary oil pump to transmission housing	*BA27.19-P-1003-01D
		Screw/bolt, electrohydraulic controller unit to transmission housing	*BA27.19-P-1001-01D
6	Install in the reverse order
	Check
7	Check oil level in automatic transmission, adjust to correct level if necessary	TRANSMISSION 725.0 with CODE 805 (Model year 2015)	AR27.00-P-0270EWN
		TRANSMISSION 725.0 without CODE 805 (Model year 2015)	AR27.00-P-0270EWM
8	Connect diagnostic unit and read out and clear fault memory
		TRANSMISSION 725.0 in MODEL 166, 172, 207, 212, 218	AD00.00-P-2000-04A
		TRANSMISSION 725.0 in MODEL 205, 217, 222	AD00.00-P-2000-04B
9	Perform transmission adaptation
	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
10	Test run engine and check transmission for leaktightness and proper operation	Shift through the gears of the transmission a few times before putting into service in order to flush any air pockets out of the fully integrated transmission control controller unit (Y3/8).

COMPLETE AUTOMATIC TRANSMISSION

Number	Designation		TRANSMISSION 725.0
BA27.10-P-1009-04H	Screw/bolt, heat shield to oil pan	Nm	9

ELECTROHYDRAULIC CONTROLLER UNIT

Number	Designation			TRANSMISSION 725.0
BA27.19-P-1001-01D	Screw/bolt, electrohydraulic controller unit to transmission housing	Stage 1	Nm	4
		Stage 2	∠°	90

ELECTROHYDRAULIC CONTROLLER UNIT

Number	Designation			TRANSMISSION 725.0
BA27.19-P-1003-01D	Screw/bolt, auxiliary oil pump to transmission housing	Stage 1	Nm	4
		Stage 2	∠°	90