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Home >> Mercedes Benz >> 2021 >> A220 Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Accessories Control Systems >> Electrical System, Equipment & Instruments - 177 Chassis (2 Of 4) >> Testing & Repair >> Remove/Install Fuse And Relay Module In Engine Compartment, Left Front - AR54.15-P-1257MFA
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Remove/Install Fuse And Relay Module In Engine Compartment, Left Front - AR54.15-P-1257MFA

Model 118, 177, 243, 247 

Fig 1: Fuse And Relay Module In Engine Compartment, Left Front Components Location - Model 177
G15492002REMOVINGINSTALLINGSPECIAL TOOLINSTALLATION IMPORTANTNOTESIMPORTANTCourtesy of MERCEDES-BENZ USA
Topical note  Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
  Notes on safety-relevant components   AH00.00-Z-0019-01A
REMOVINGINSTALLING Remove/install     
1 Remove engine compartment pre-fuse box (F150/3).   AR54.15-P-1330MFA 
2 Unclip filler neck of washer fluid reservoir at arrow (A).    
3 Unclip engine compartment fuse and relay module (F152/3) at arrows (B) and release engine compartment fuse and relay module (F152/3) from housing (1). SPECIAL TOOL Long wedge Fig 2
4 Remove cable tie from electrical wiring harness. INSTALLATION IMPORTANT Replace cable tie.  
5 Pull cable duct (2) with engine compartment fuse and relay module (F152/3) upwards. NOTES
Do not crush or kink or subject electric lines to tension.
This will result in damage to the electric lines and can impair their function.
 
6 Remove all electric lines from engine compartment fuse and relay module (F152/3). IMPORTANT The number of electrical lines varies depending on the equipment installed in the vehicle.  
7 Install in the reverse order.    
Fig 2: Identifying Long Wedge (115 589 03 59 00)
G07070400Courtesy of MERCEDES-BENZ USA