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

Engine 176 in model 463 

as of model year 2019 

Engine 177 in model 463 

as of model year 2019 

Fig 1: Fuel Pump Control Unit Components Location - Engine 176 And 177 In Model 463 As Of Model Year 2019
G13668785REMOVINGINSTALLINGREFER TO SELF-DIAGNOSTIC SYSTEMSINSTALLATION IMPORTANTTORQUE SPECIFICATIONWARNINGCourtesy of MERCEDES-BENZ USA
  Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
REMOVINGINSTALLING Remove/install     
1REFER TO SELF-DIAGNOSTIC SYSTEMS Connect vehicle diagnosis system and read out variant coding of fuel system control unit (N118). If the fuel system control unit (N118) is replaced:
INSTALLATION IMPORTANT : Transfer stored data to new FSCU (N118).
AD00.00-P-2000-04B
2 Switch off ignition and store transmitter key outside of transmitter range (min. 2 m).    
3 Remove load compartment floor.   AR68.80-P-5800XG
4 Release and disconnect electrical connections (1).    
5 Unscrew nuts (2). TORQUE SPECIFICATION Nut, fuel system control unit to holder *BA54.21-P-1001-01F 
6 Remove fuel system control unit (N118).    
7 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
8 Perform an engine test run and check the engine for proper function.    
CONTROL UNITS/BASE MODULE

Number Designation Model 463 as of model year 2019
BA54.21-P-1001-01F Nut, fuel system control unit to holder M5 Nm 3