Remove/Install Transfer Case Control Unit - AR28.19-P-1003MNM

Transmission 725.09 in model 217, 222 with engine 177 

with code M005 (Vehicles with 4MATIC/all-wheel drive) 

Fig 1: Transfer Case Control Unit Component Location - Transmission 725.09 In Model 217 With Engine 177 (With Code M005)

Courtesy of MERCEDES-BENZ USA

	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
Notice	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Remove/install
1	Release and disconnect electrical connector (2).
2	Remove screw/bolts (3).	Bolt, control unit to transfer case	*BA28.10-P-1010-01G
3	Remove all-wheel drive control unit (N45) downwards.	:  The catch hooks of the all-wheel drive control unit (N45) must engage in the grooves in the transfer case (4). Damage will otherwise occur. :  Replace seals.
4	Install in the reverse order.
5	Commission all-wheel drive control unit (N45).	When replacing the all-wheel drive control unit (N45).
			AD00.00-P-2000-04B
	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
6	Perform engine test run; while doing so, check transfer case (4) for proper operation and leak tightness.