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Home >> Mercedes Benz >> 2020 >> CLA45 AMG >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Electrical System, Equipment & Instruments (2 Of 3) -- 118 Chassis >> Testing & Repair >> Remove/Install 48 V On-Board Electrical System Battery - AR54.10-P-0022MFA

Remove/Install 48 V On-Board Electrical System Battery - AR54.10-P-0022MFA

Model 118, 177, 247 

with code B01 (48V technology) 

G16050455Courtesy of MERCEDES-BENZ USA

Shown on model 177 

G16050456Courtesy of MERCEDES-BENZ USA
DANGER Risk of fire  /risk of explosion due to short circuit and escaping oxyhydrogen gas. Risk of (burn) injury caused by caustic burns to eyes, skin and mucous membranes from battery electrolyte/mist, short circuit and arcing. Risk of poisoning  caused by swallowing battery electrolyte or absorption of lead through the skin or body orifices. Risk of death due to voltage U >= 30 V AC and U >= 60 V DC. No fires, sparks, open flames, or smoking. Wear acid-resistant gloves, clothing, and glasses. Pour battery acid only into suitable and appropriately marked containers. AS54.10-Z-0001-01A
Notice  Notes on avoiding damage through contamination and foreign objects   AH00.00-P-5000-01A
Notice  General information on vehicles with high-voltage on-board electrical system and/or lithium-ion battery and/or gaseous-fuel drive system as well as personal protective equipment   AH00.00-Z-0300-01A
Notice  Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
Notice  Notes on battery   AH54.10-P-0001-01A
  Notes on safety-relevant components   AH00.00-Z-0019-01A
REMOVINGINSTALLING Remove/install     
1 Commission 48 V battery (G1/3). When replacing 48 V battery (G1/3).  
REFER TO SELF-DIAGNOSTIC SYSTEMS     AD00.00-P-2000-06MFA
2 Remove load compartment floor.    
3 Print out analysis sheet.    
REFER TO FORMS Analysis sheet for 48 V lithium-ion battery, form   OF54.10-P-3000-15C 
4 Check housing of 48 V battery (G1/3) for mechanical damage. IMPORTANT Check the non-visible area on the housing after removal of the 48 V battery (G1/3).
IMPORTANT Using 48 V lithium-ion battery analysis sheet form, check whether damage is present on 48 V battery (G1/3) through which electrolyte is leaking.
If yes,
↓
notify MPC/general representative.		  
5 Check for potential hazards of 48 V battery (G1/3). IMPORTANT In the event of smoke generation or fire, notify the fire department.
IMPORTANT Using 48 V lithium-ion battery analysis sheet form, check whether 48 V battery (G1/3) presents an acute danger.		  
6 Disconnect ground line of battery of 12V onboard electrical system.   AR54.10-P-0003MFA 
    IMPORTANT The 48 V on-board electrical system is automatically disconnected from power supply at the latest 10 s after disconnecting the ground line from the 12 V on-board electrical system battery.  
7 Unclip electric line from battery frame (2). SPECIAL TOOL Dismantling tool Fig 1
8 Remove nuts (1) and remove upper battery frame (2). TORQUE SPECIFICATION Bolt, battery frame to battery carrier/transmission mount *BA54.10-P-1002-01D 
9 Remove cover caps from nuts (3, 4).    
10 Remove nut (3) and remove ground line. TORQUE SPECIFICATION Nut, ground line to battery of 48 V onboard electrical system *BA54.10-P-1011-01D 
11 Detach nut (4) and remove positive line. TORQUE SPECIFICATION Nut, positive line to battery of 48 V onboard electrical system *BA54.10-P-1010-01D 
12 Disconnect electrical connector (5) and unclip electric line.    
13 Remove degassing pipe (6).   AR54.10-P-0022-01FR 
    SPECIAL TOOL Record plug Fig 2
14 Remove nuts (7) and remove 48 V battery (G1/3) with lower battery frame (8). TORQUE SPECIFICATION Bolts, battery carrier to body *BA54.10-P-1009-01D 
15 Remove screws (9) and remove 48 V battery (G1/3) from lower battery frame (8). INSTALLATION IMPORTANT Check insulating washers (10) are correctly seated.  
    TORQUE SPECIFICATION Screw, battery of 48 V on-board electrical system to battery frame *BA54.10-P-1012-01D 
16 Install in the reverse order.    
BATTERY

Number Designation Model 118 Model 177
BA54.10-P-1002-01D Bolt, battery frame to battery carrier/transmission mount Nm 23 23
BATTERY

Number Designation Model 247
BA54.10-P-1002-01D Bolt, battery frame to battery carrier/transmission mount Nm 23
BATTERY

Number Designation Model 118 Model 177
BA54.10-P-1009-01D Bolts, battery carrier to body Nm 23 23
BATTERY

Number Designation Model 247
BA54.10-P-1009-01D Bolts, battery carrier to body Nm 23
BATTERY

Number Designation Model 118 Model 177
BA54.10-P-1010-01D Nut, positive line to battery of 48 V on-board electrical system Nm 16 16
BATTERY

Number Designation Model 247
BA54.10-P-1010-01D Nut, positive line to battery of 48 V on-board electrical system Nm 16
BATTERY

Number Designation Model 118 Model 177
BA54.10-P-1011-01D Nut, ground line to battery of 48 V on-board electrical system Nm 16 16
BATTERY

Number Designation Model 247
BA54.10-P-1011-01D Nut, ground line to battery of 48 V on-board electrical system Nm 16
BATTERY

Number Designation Model 118 Model 177
BA54.10-P-1012-01D Screw, battery of 48 V on-board electrical system to battery frame Nm 16 16
BATTERY

Number Designation Model 247
BA54.10-P-1012-01D Screw, battery of 48 V on-board electrical system to battery frame Nm 16
Fig 1: Identifying Dismantling Tool (000 589 95 63 00)
G13659648Courtesy of MERCEDES-BENZ USA
Fig 2: Identifying Record Plug (129 589 00 91 00)
G09975019Courtesy of MERCEDES-BENZ USA
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