Remove/install ignition coils - AR15.12-P-2003MNA

ENGINE 176 in MODEL 463 

ENGINE 177 in MODEL 205 

Shown on model 205 with engine 177 

Fig 1: Ignition Coils Remove/Install Components - Shown On Model 205 With Engine 177

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
	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
	Risk of death  caused by contact with parts conducting high voltages.	Do not touch parts which conduct high voltages. Persons who have electronic implants (e.g. cardiac pacemakers) may not perform any work on the ignition system.	AS15.10-Z-0001-01A
	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Notes on avoiding damage to ignition system		AH15.10-P-0002-01V
	Remove/install
1	Remove right air filter housing	When removing the ignition coils (17, 18).	AR09.10-P-1150MNA
2	Remove left-hand air filter housing	When removing the ignition coil (19).	AR09.10-P-1150MNA
3	Remove right and left air filter housing	When removing the ignition coil (20).	AR09.10-P-1150MNA
4	Remove screw/bolts (1, 2)	When removing the ignition coil (18). Bolt, engine wiring harness to cylinder head cover	*BA15.18-P-1001-01G
5	Unclip electrical plug connections (3) on right crash plate	Engine 177 in model 205 When removing the ignition coil (17).
6	Remove screw/bolts (4)	When removing the ignition coil (17).
		Engine 176 in model 463 Bolt, vacuum pump to cylinder head	*BA43.05-P-1002-01B
		Engine 177 in model 205 Screw/bolt, bracket of vacuum line to shield plate of high-pressure pump	*BA43.05-P-1002-01O
7	Detach vacuum line (5) to vacuum pump	When removing the ignition coil (17).
8	Remove upper heat shield (6) on left and right ATL	When removing the ignition coil (20).	AR09.40-P-6026MNA
9	Remove insulation (7)	When removing the ignition coil (20).
10	Remove screw/bolts (8) and place heat shield to one side	When removing the ignition coil (20). Bolt, side heat shield to cylinder head cover	*BA09.40-P-1007-01ZA
11	Disconnect Electrical connections (9, 10, 11, 12)
12	Remove screw/bolts (13, 14, 15, 16) of ignition coils (17, 18, 19, 20)	Bolt, ignition coil to cylinder head cover	*BA15.10-P-1001-04D
13	Detach ignition coils (17, 18, 19, 20) with spark plug connectors upwards and remove	To reduce the force required for plugging/unplugging the spark plug connector grease must be applied before installation of the spark plug connector. The spark plug connectors will get damaged otherwise when they are removed again. Apply about 1 g of spark plug connector grease in the spark plug connector. Spark plug connector grease	*BR00.45-Z-1102-06A
	Check
14	Check ignition coils (/17, 18, 19, 20) and spark plug connectors for damage and replace if necessary
15	Install in the reverse order
16	Read out fault memory using the diagnostic system and clear if necessary
		Engine 176 in model 463	AD00.00-P-2000-04A
		Engine 177 in model 205	AD00.00-P-2000-04B