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Home >> Mercedes Benz >> 2017 >> GLS450 >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Electrical System, Equipment & Instruments - 166 Chassis 4 Of 8 >> Testing & Repair >> Disconnect/Connect Battery Ground Line - AR54.10-P-0003GZ

Disconnect/Connect Battery Ground Line - AR54.10-P-0003GZ

Model 164, 166, 292 

MODIFICATION NOTES

16.12.2019 Open hood added. Operation step 1  
18.12.2019 Disconnect charging cable of high-voltage on-board electrical system added. Step 4  
18.12.2019 Disconnect charger of on-board electrical system battery added. Step 5  
18.12.2019 Disconnect diagnostic unit added. Step 6  

Shown on model 164 

Fig 1: Battery Ground Line/Cable Components Location - Model 166 (Shown On Model 164)
G14132235DANGERDANGERREMOVINGINSTALLINGREFER TO SELF-DIAGNOSTIC SYSTEMSTORQUE SPECIFICATIONIMPORTANTCourtesy of MERCEDES-BENZ USA
DANGER Risk of death  when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC) Do not touch damaged or defective live component parts and lines or non-insulated electrical connections and lines. AS00.00-Z-0035-01A
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 
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
Notes on battery   AH54.10-P-0001-01A
REMOVINGINSTALLING Remove/install     
1 Open hood. Model 166 with code ME05 (Hybrid drive 85 kW-94 kW variant (incl. plug-in))  
2 Move front passenger seat (1) into foremost and uppermost positions and set seat backrest to vertical position.    
3 Switch off ignition and store transmitter key outside of transmitter range (at least 2 m).    
4 Disconnect charging cable of high-voltage onboard electrical system. Model 166 with code ME05 (Hybrid drive 85 kW-94 kW variant (incl. plug-in))
If a charging cable is connected.
 
5 Disconnect charger of on-board electrical system battery (5). When an external charger is connected.  
6 Disconnect diagnostic unit. If a diagnostic device is connected.  
REFER TO SELF-DIAGNOSTIC SYSTEMS     AD00.00-P-2000-04A
7 Remove cover (2).    
8 Release nut (3) on battery negative pole terminal and disconnect ground line (4) from battery (5). TORQUE SPECIFICATION Nut, battery line to negative terminal/positive terminal *BA54.10-P-1012-01C 
9 Using a diode test lamp, check the on-board electrical system for voltage between the positive line of the battery (5) and the disconnected ground line (4). IMPORTANT If the diode test lamp lights up, the on board electrical system is still active because of a defect in the electrical system.  
10 Detach ground line from auxiliary battery. Only if the diode test lamp lights up.
Model 166.8 as of model year 2016 with code 4U7 (Start/stop voltage dip protector)
AR54.10-P-0121GQA 
Model 164 AR54.10-P-0007GZ
Model 166 up to model year 2016 except code B03 (ECO start/stop function) except code ME05 (Hybrid drive 85 kW-94 kW variant (incl. plug-in)) AR54.10-P-0121GQ 
Model 166.0 as of model year 2016 with code ME05 (Hybrid drive 85 kW-94 kW variant (incl. plug-in))
Model 166.0 up to model year 2016 with code B03 (ECO start/stop function)
AR54.10-P-0007GQA
Model 166.0 as of model year 2016 with code 4U7 (Start/stop voltage dip protector) except code ME05 (Hybrid drive 85 kW-94 kW variant (incl. plug-in))
Model 292 with code 4U7 (Start/stop voltage dip protector)
AR54.10-P-0121GQB
Model 166.8 up to model year 2016 with code B03 (ECO start/stop function) AR54.10-P-0007GQX 
11 Install in the reverse order.    
  Adjust     
12 Perform basic programming. Model 164, 166, 292
Model 164, 166
AR00.19-P-0200GZ
BATTERY

Number Designation Model 164 Model 166
BA54.10-P-1012-01C Nut, battery line to negative terminal/positive terminal M6 Nm 6 6
BATTERY

Number Designation Model 292
BA54.10-P-1012-01C Nut, battery line to negative terminal/positive terminal M6 Nm 6