LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mercedes Benz >> 2021 >> GLC300 Base >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Mixture Formation - 253 Chassis 2 Of 3 >> Testing & Repair >> Remove/Install ME-SFI/Injection System Control Unit >> Remove/Install ME-SFI/Injection System Control Unit - AR07.08-P-7008MRA
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Remove/Install ME-SFI/Injection System Control Unit - AR07.08-P-7008MRA

Engine 274.9 in model 205 

Engine 274.9 in model 253 

Shown on engine 274.9 in model 205 (except 205.047/147/247) 

G12934054Courtesy of MERCEDES-BENZ USA
Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
REMOVINGINSTALLING Remove/install     
1
REFER TO SELF-DIAGNOSTIC SYSTEMS
Start control unit replacement with diagnostic system When replacing the ME-SFI [ME] control unit (N3/10). AD00.00-P-2000-04B
2 Switch off ignition and store transmitter key outside of transmission range (min. 2 m)    
3 Release and disconnect vehicle wiring harness (1) on ME-SFI [ME] control unit (N3/10)    
4 Release and disconnect engine wiring harness (2) on ME-SFI [ME] control unit (N3/10)    
5 Open retaining clamps and remove ME-SFI [ME] control unit (N3/10)    
INSPECT Check     
6 Check bracket for ME-SFI [ME] control unit (N3/10) for damage and replace if necessary    
7 Install in the reverse order    
8
REFER TO SELF-DIAGNOSTIC SYSTEMS
Read out and erase fault memory   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 buttoned-up and snug-fitting work clothes. Do not touch hot or rotating parts. AS00.00-Z-0005-01A
9 Perform an engine test run and check engine for proper function