LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mercedes Benz >> 2020 >> SLC43 AMG Base >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Mixture Formation - 172 Chassis >> Testing & Repair >> Remove/Install ME-SFI Control Unit - AR07.08-P-1000W
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Remove/Install ME-SFI Control Unit - AR07.08-P-1000W

Engine 276.8 in model 172 

Fig 1: ME-SFI Control Unit Components Location - Engine 276.8 In Model 172
G13845389NOTESREMOVINGREFER TO SELF-DIAGNOSTIC SYSTEMSINSTALLINGIMPORTANTREFER TO SELF-DIAGNOSTIC SYSTEMSCourtesy of MERCEDES-BENZ USA
NOTES Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
REMOVING Remove     
1 Read out variant coding of the ME-SFI [ME] control unit (N3/10) with diagnostic system and store it When replacing the ME-SFI [ME] control unit (N3/10).  
REFER TO SELF-DIAGNOSTIC SYSTEMS     AD00.00-P-2000-04A
2 Switch off ignition and store transmitter key outside of transmission range (min. 2m)    
3 Remove upper engine cover    
4 Release and disconnect electrical connections (1, 2)    
5 Unclip ME-SFI [ME] control unit (N3/10) upwards and take it off    
INSTALLING Install     
6 Clip ME-SFI [ME] control unit (N3/10) into bracket IMPORTANT Ensure correct seating of the ME-SFI [ME] control unit (N3/10).  
7 Place electrical connections (1, 2) and lock    
8 Install upper engine cover    
9 Insert transmitter key into ignition lock and switch on ignition When replacing the ME-SFI [ME] control unit (N3/10).  
10 Transfer stored data 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-2000-04A
11 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.
Carry out an engine test run
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