LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mercedes Benz >> 2017 >> GLS450 >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Mixture Formation - 166 Chassis 3 Of 5 >> Testing & Repair >> Remove/Install Injection System Control Unit >> Remove/Install Injection System Control Unit - AR07.08-P-7008GQC
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Remove/Install Injection System Control Unit - AR07.08-P-7008GQC

ENGINE 276.8 in model 166, 251, 292 

Fig 1: Injection System/ME-SFI (ME) Control Unit Components Location - Engine 276.8 In Model 166
G14133801Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install     
1 Read out variant coding of the ME-SFI [ME] control unit (N3/10) with diagnostic system When replacing ME-SFI [ME] control unit (N3/10)  
REFER TO SELF-DIAGNOSTIC SYSTEMS   IMPORTANT Connect up diagnostic system and read data from ME-SFI [ME] control unit (N3/10) in diagnostic system.
INSTALLATION IMPORTANT : Transfer stored data to new ME-SFI [ME] control unit (N3/10).
AD00.00-P-2000-04A
2 Switch off ignition    
3 Remove partition wall between wheel wells ENGINE 276.8 in model 251 AR62.30-P-2400RT
4 Remove upper ENGINE cover    
5 Unclip ME-SFI [ME] control unit (N3/10) upwards and take it off    
6 Disconnect electrical connections (1, 2) on ME-SFI [ME] control unit (N3/10)    
7 Install in the reverse order    
DANGER 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
8 Carry out an ENGINE test run