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Home >> Mercedes Benz >> 2018 >> GLS450 >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Electrical System, Equipment & Instruments - 166 Chassis 4 Of 8 >> Testing & Repair >> Remove/Install Interior Compartment Prefuse Box - AR54.15-P-1350GQ

Remove/Install Interior Compartment Prefuse Box - AR54.15-P-1350GQ

Model 166, 292 

Shown on model 166 

G14132266Courtesy of MERCEDES-BENZ USA

Shown on model 166 

G14132267Courtesy of MERCEDES-BENZ USA
Fig 1: Interior Compartment Prefuse Box Components Location - Model 166
G14132268Courtesy of MERCEDES-BENZ USA

Shown on model 166 

REMOVINGINSTALLING Remove/install     
1 Remove right front seat   AR91.10-P-1000GQ
2 Remove lower paneling of right B-pillar   AR68.30-P-4700GQ
3 Move rear floor covering (1) to one side    
4 Place front floor covering (3) to one side    
5 Remove air duct (7)    
6 Unclip expansion clip (2) SPECIAL TOOL Clip remover Fig 2
7 Unhook cable clip (5) from cover on prefuse box (6)    
8 Release battery cover (8) and place to one side with line attached    
9 Remove shaped part (4)    
10 Unscrew nuts (9) from cover on prefuse box (6)    
11 Unhook electrical connection (12) and electrical line (11) from cover of prefuse box (6)    
12 Remove cover from prefuse box (6)    
DANGER Risk of explosion  from explosive gas. Risk of poisoning and caustic burns  from swallowing battery electrolyte. Risk of injury  through burns to skin and eyes from battery acid or when handling damaged lead-acid batteries No fires, sparks, open flames or smoking. Wear acid-resistant gloves, clothing and glasses. Only pour battery acid into suitable and appropriately marked containers. AS54.10-Z-0001-01A 
13 Remove battery   AR54.10-P-0005GZ 
NOTES Notes on battery   AH54.10-P-0001-01A
14 Disconnect positive line from prefuse box TORQUE SPECIFICATION Nut, positive line to engine compartment/vehicle interior prefuse box *BA54.15-P-1001-01L 
15 Remove cable bracket (10)    
16 Unscrew nut (13)    
17 Release locks (15) and swivel bracket (20) with prefuse box (14) inwards in direction of arrow and out of the guide (16)    
18 Unclip fuse holder (17) IMPORTANT The number of fuse holders (17) varies depending on the vehicle equipment.  
19 Detach electrical connections (18) from prefuse box (14) IMPORTANT The number of electrical connections (18) varies depending on the vehicle equipment.  
20 Release locks (19) and remove prefuse box (14) from bracket (20)    
21 Change relays and fuses When replacing the prefuse box.
IMPORTANT The number of fuses and relays varies depending on the vehicle equipment.
 
22 Install in the reverse order    
FUSE AND RELAY BOX

Number Designation Model 166 Model 292
BA54.15-P-1001-01L Nut, positive line to engine compartment/vehicle interior prefuse box M6 Nm 8 8
M8 Nm 16 16
Fig 2: Identifying Clip Remover (452 589 01 63 00)
G07304504Courtesy of MERCEDES-BENZ USA