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Home >> Mercedes Benz >> 2021 >> G550 >> Repair and Diagnosis >> Accessories & Equipment >> Collision/Avoidance >> Electrical System, Equipment & Instruments - 463 Chassis (1 Of 2) >> Testing & Repair >> Remove/Install Fuse And Relay Module In Engine Compartment - AR54.15-P-0005XG

Remove/Install Fuse And Relay Module In Engine Compartment - AR54.15-P-0005XG

Model 463 

as of Model year 2019 

Fig 1: Engine Compartment Fuse And Relay Module Components Location - Model 463 As Of Model Year 2019
G13658814Courtesy of MERCEDES-BENZ USA
G13658815Courtesy of MERCEDES-BENZ USA
  Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A 
REMOVINGINSTALLING Remove/install     
1 Disconnect ground line of battery.   AR54.10-P-0003XG 
2 Open engine hood and raise to upright position.   AR88.40-P-1000XG
3 Unscrew screws (1) and remove cap (2) of fuse box (3).    
4 Unclip fuse and relay module (K40/8) (arrows) and extend upward until the nut (4) is accessible.    
5 Unscrew nut (4) and remove positive line. TORQUE SPECIFICATION Nut, positive line to engine fuse and relay module *BA54.15-P-1002-02A 
6 Disconnect all electrical connectors from engine fuse and relay module (K40/8).    
7 Unclip all fuse holders and place to one side.    
8 Remove engine fuse and relay module (K40/8).    
9 Change all fuses and relays. When replacing engine fuse and relay module (K40/8).  
REFER TO BASIC KNOWLEDGE   Model 463 (except 463.342) as of Model year 2019 GF54.15-P-1256-32GWM 
10 Install in reverse order.    
FUSE AND RELAY MODULE

Number Designation Model 463 up to Model year 2019 Model 463 as of Model year 2019
BA54.15-P-1002-02A Nut, positive line to engine fuse and relay module M6 Nm - 8
M8 Nm - 16