LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mercedes Benz >> 2021 >> C300 Base, 2D Convertible >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Fuel System - 205 Chassis >> Testing & Repair >> Remove/Install Fuel Pump Control Unit >> Remove/Install Fuel Pump Control Unit - AR47.20-P-5717LW
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Remove/Install Fuel Pump Control Unit - AR47.20-P-5717LW

Model 205 with engine 177, 274.9, 276.8, 651, 654 

Model 205.0/1/2 with engine 264 

Fig 1: Fuel Pump Control Unit Components Location - Model 205.0 With Engine 264
G14186028REMOVINGINSTALLINGREFER TO SELF-DIAGNOSTIC SYSTEMSINSTALLATION IMPORTANTINSTALLATION IMPORTANTWARNINGCourtesy of MERCEDES-BENZ USA
  Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
REMOVINGINSTALLING Remove/install     
1 Commission fuel system control unit (N118). When replacing the FSCU (N118).  
REFER TO SELF-DIAGNOSTIC SYSTEMS   INSTALLATION IMPORTANT Transfer stored data onto the new fuel system control unit (N118). AD00.00-P-2000-04B
2 Switch off ignition and store transmitter key outside of transmitter range (min. 2 m).    
3.1 Remove rear passenger compartment side trim. Model 205.0/1/2/3
Model 205.0/1/2
AR68.30-P-4780LW
    Model 205.3 AR68.30-P-4780CLW
3.2 Remove lower trim at side in rear. Model 205.4 AR68.30-P-4784LWR
4 Remove fuel system control unit (N118) from bracket (2). INSTALLATION IMPORTANT Ensure correct seating of the FSCU (N118).  
5 Release and disconnect electrical connectors at fuel system control unit (N118).    
6 Install in the reverse order.    
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
7 Perform engine test run.