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Home >> Mercedes Benz >> 2018 >> S450 Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> Engine Control Systems >> Mixture Formation - 222 Chassis (2 Of 3) >> Testing & Repair >> Remove/Install Engine Management Control Unit (MCM) >> Remove/Install Engine Management Control Unit (MCM) - AR07.08-P-7013MNM
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Remove/Install Engine Management Control Unit (MCM) - AR07.08-P-7013MNM

Engine 177 in model 217, 222 

Fig 1: Engine Management Control Unit (MCM) Components Location - Engine 177 In Model 222
G15366197Courtesy of MERCEDES-BENZ USA
WARNING Risk of injury  to skin and eyes suffering scalding from contact with hot coolantspray. Risk of poisoning  from swallowing coolant. Do not open cooling system unless coolant temperature is below 90°C. Open cap slowly and release the overpressure. Do not pour coolant into beverage containers. Wear protective gloves, protective clothing and safety glasses. AS20.00-Z-0001-01A
Notice  Notes on avoiding damage through contamination and foreign objects   AH00.00-P-5000-01A
Notice  Notes on coolant   AH20.00-P-2080-01KOA
Notice  Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
REMOVINGINSTALLING Remove/install     
1 Connect diagnostic device and read out variant coding from ME [ME-SFI] control unit (N3/10) When replacing the ME-SFI [ME] control unit (N3/10).  
REFER TO SELF-DIAGNOSTIC SYSTEMS     AD00.00-P-2000-04B
2 Switch off ignition and store transmitter key outside of transmission range (at least 2 m)    
3 Remove upper engine cover INSTALLATION IMPORTANT : Only install upper engine cover after engine test run with leak test.  
4 Release and disconnect electrical connectors (1 2) on ME-SFI [ME] control unit (N3/10)    
5 Clamp off coolant lines (4) SPECIAL TOOL Clamp Fig 2
6 Remove coolant lines (4) from ME-SFI [ME] control unit (N3/10) _   AR20.20-P-7441-01RQ
7 Seal openings using suitable protective SPECIAL TOOL Set of protective covers Fig 3
8 Remove ME [ME-SFI] control unit (10N3) upwards out of the elastomer bearings    
9 Check elastomer bearings of ME-SFI [ME] control unit (N3/10) for damage INSTALLATION IMPORTANT : Coat elastomer bearings of ME-SFI [ME] control unit (N310) with antifriction paste.  
    Antifriction paste, rubber parts 2.5 kg, DBL 6867.00
If the ME-SFI [ME] control unit (N3/10) is damaged or its elastomer bearings are missing

Replace the elastomer bearings of the ME-SFI [ME] control unit (N3/10).
*BR00.45-Z-1002-06A 
10 Remove ball pins (3) from ME-SFI [ME] control unit (N3/10) When replacing the ME-SFI [ME] control unit (N3/10).  
11 Remove bracket (5) from ME-SFI [ME] control unit (N3/10) When replacing the ME-SFI [ME] control unit (N3/10).  
    TORQUE SPECIFICATION M6X1 *BA00.10-P-1002-04A 
12 Install in the reverse order    
13 Transfer variant coding of old ME-SFI [ME] control unit (N3/10) to new ME-SFI [ME] control unit (N3/10) When replacing the ME-SFI [ME] control unit (N3/10).  
REFER TO SELF-DIAGNOSTIC SYSTEMS     AD00.00-P-2000-04B
14 Bleed low-temperature circuit engine cooling system with diagnostic system    
REFER TO SELF-DIAGNOSTIC SYSTEMS     AD00.00-P-2000-04B
15 Check low-temperature circuit engine cooling system for leaktightness   AR09.41-P-1011MNM
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
16 Perform engine test run and check engine for proper operation and leak tightness    
17 Install upper engine cover    
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
Fig 2: Identifying Clamp (000 589 54 37 00)
G12939727Courtesy of MERCEDES-BENZ USA
Fig 3: Identifying Set Of Protective Covers (001 589 11 91 00)
G14786196Courtesy of MERCEDES-BENZ USA
REPAIR MATERIALS

Number Designation Order number
BR00.45-Z-1002-06A Antifriction paste, rubber parts 2.5 kg, DBL 6867.00 A 000 989 01 60