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Remove/Install Ignition Coils Of Left Cylinder Bank - AR15.12-P-2008XGC

Engine 177 in model 463 

as of model year 2019 

Fig 1: Ignition Coils Of Left Cylinder Bank Components Location - Engine 177 In Model 463 As Of Model Year 2019
G13656574Courtesy of MERCEDES-BENZ USA
WARNING 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  when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC) Do not touch damaged or defective live component parts and lines or non-insulated electrical connections and lines. AS00.00-Z-0035-01A
  Notes on avoiding damage to ignition system   AH15.10-P-0002-01V 
REMOVINGINSTALLING Remove/install     
1 Remove bracket for low-temperature circuit coolant expansion reservoir.   AR09.41-P-0017XGC
2 Release and disconnect electrical connectors (1, 4).    
3 Unclip retaining clip (7) from cylinder head cover and place wiring harness to one side.    
4 Unclip the bracket (5) from the crash plate.    
5 Remove screw/bolts (6). TORQUE SPECIFICATION Bolt, ignition coil to cylinder head cover *BA15.10-P-1001-04D 
6 Detach ignition coil for cylinders 5 + 6 (T4/2) upwards and remove. IMPORTANT Ignition coil for cylinders 5 + 6 (T4/2) and spark plug connectors form a unit and can thus only be removed and replaced together.  
7 Detach ignition coil for cylinders 7 + 8 (T4/3) upwards and remove. IMPORTANT Ignition coil for cylinders 7 + 8 (T4/3) and spark plug connectors form a unit and can thus only be removed and replaced together.  
8 Check ignition coil for cylinders 5 + 6 (T4/2) and ignition coil for cylinders 7 + 8 (T4/3) for damage. If there is a problem,

Replace ignition coil for cylinders 5 + 6 (T4/2) and/or ignition coil for cylinders 7 + 8 (T4/3).
 
9 Approx. Apply about 1 g of spark plug connector grease to the spark plug connector. NOTES To reduce the withdrawal and attachment forces the spark plug connector grease must be applied.
Otherwise the spark plug connectors will be damaged upon renewed removal.
 
    Spark plug connector grease *BR00.45-Z-1102-06A 
10 Install in the reverse order.    
11 Read out and delete fault memory.    
REFER TO SELF-DIAGNOSTIC SYSTEMS     AD00.00-P-2000-04B
WARNING 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
12 Perform an engine test run and check the engine for proper function.    
IGNITION COIL

Number Designation Engine 177
BA15.10-P-1001-04D Bolt, ignition coil to cylinder head cover Nm 9
REPAIR MATERIALS

Number Designation Order number
BR00.45-Z-1102-06A Spark plug connector grease A 002 989 80 51