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Home >> Mercedes Benz >> 2018 >> S450 Base >> Repair and Diagnosis >> Engine Performance >> Tune-Up >> Electrical System - Engine - 222 Chassis >> Testing & Repair >> Remove/Install Ignition Coils >> Remove/Install Ignition Coils Of Right Cylinder Bank - AR15.12-P-2009MNL

Remove/Install Ignition Coils Of Right Cylinder Bank - AR15.12-P-2009MNL

Engine 176 in model 217, 222 

Fig 1: Ignition Coils Of Right Cylinder Bank Components Location - Engine 176 In Model 222
G15362429Courtesy 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
DANGER 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
Topical note  Notes on avoiding damage to ignition system   AH15.10-P-0002-01V 
REMOVINGINSTALLING Remove/install     
1 Remove right air filter housing   AR09.10-P-1152MNL
2 Unlock and disconnect the electrical plug connection (1) of the ignition coil for cylinders 1+2 (T4)    
3 Remove screw/bolts (2) TORQUE SPECIFICATION Bolt, ignition coil to cylinder head cover *BA15.10-P-1001-04D 
4 Detach ignition coil for cylinders 1+2 (T4) upward and remove IMPORTANT The ignition coil for cylinders 1+2 (T4) and the spark plug connectors form a single unit and can be removed only together.  
5 Unclip the engine wiring harness (3) using the vacuum hose (4) and put the components to one side    
6 Remove screw/bolt/bolts (5) TORQUE SPECIFICATION M6X1 *BA00.10-P-1002-04A 
7 Remove the vacuum hose (4) from the vacuum pump and seal the opening using a suitable plug SPECIAL TOOL Record plug Fig 2
8 Unlock and disconnect the electrical plug connection (6) of the ignition coil for cylinders 3+4 (T4/1)    
9 Remove bolts (7) TORQUE SPECIFICATION Bolt, ignition coil to cylinder head cover *BA15.10-P-1001-04D 
10 Detach ignition coil for cylinders 3+4 (T4/1) upward and remove IMPORTANT The ignition coil for cylinders 3+4 (T4/1) and the spark plug connector form a single unit and can be removed only together.  
11 Check the ignition coil for cylinders 1+2 (T4) and check the ignition coil for cylinders 3+4 (T4/1) for damage If a problem arises
↓
Replace ignition coil for cylinders 1+2 (T4) and replace ignition coil for cylinders 3+4 (T4/1).
 
12 Discharge approx. Apply about 1 g of spark plug connector grease to the spark plug connector NOTES
Apply spark plug connector grease to reduce pull-off and attachment forces
Otherwise, spark plug connectors are damaged on renewed removal. Spark plug connector grease
*BR00.45-Z-1102-06A 
13 Install in the reverse order    
14 Read out and erase 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
15 Perform an engine test run and check engine for proper function    
METRIC SCREWS/BOLTS AND NUTS AS PER MBN 10 105, 10 143

Number Designation 8.8 10.9
BA00.10-P-1002-04A M6X1 Nm 9 13
IGNITION COIL

Number Designation Engine 176
BA15.10-P-1001-04D Bolt, ignition coil to cylinder head cover Nm 9
Fig 2: Identifying Record Plug (129 589 00 91 00)
G12078802Courtesy of MERCEDES-BENZ USA
REPAIR MATERIALS

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