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

Model 205.3/4 with engine 264 

Fig 1: Fuel Pump Control Unit Components Location - Model 205.3/4 With Engine 264
G14186029Courtesy of MERCEDES-BENZ USA

Shown on model 205.3 with removed door and removed driver's seat 

G14186030Courtesy of MERCEDES-BENZ USA

Shown on model 205.4 

  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     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 205.3 with engine 264 AR68.30-P-4780CLW
3.2 Remove lower trim at side in rear. Model 205.4 with engine 264 AR68.30-P-4784LWR
4 Release and disconnect electrical connectors (1) on fuel system control unit (N118).    
5.1 Unclip and remove fuel system control unit (N118). Model 205.3 with engine 264
INSTALLATION IMPORTANT Ensure correct seating of the FSCU (N118).
 
5.2 Unscrew nuts (2) and remove fuel system control unit (N118). Model 205.4 with engine 264  
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.