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Home >> Mercedes Benz >> 2012 >> S65 >> Repair and Diagnosis >> Electrical >> Gauges >> Electrical System, Equipment & Instructions - 221 Chassis - 2 Of 9 >> Testing & Repair >> Remove/install on-board electrical system battery >> Remove/install on-board electrical system battery - AR54.10-P-0009SY

Remove/install on-board electrical system battery - AR54.10-P-0009SY

MODEL 216.3 as of 2.6.08 

MODEL 216.3 with CODE (809) Model year 2009 

MODEL 221.0/1 as of 2.6.08 

MODEL 221.0/1 (except 221.095/195) with CODE (809) Model year 2009 

Fig 1: Identifying On-Board Electrical System Battery Remove/Install Components - Shown On Model 221.0
G10111129Courtesy of MERCEDES-BENZ USA

Shown on model 221.0 

REMOVINGINSTALLING Remove/install     
DANGER Risk of explosion  caused by escaping oxyhydrogen gas. Risk of injury  caused by caustic burns to eyes, skin and mucous membranes from battery electrolyte (contains diluted sulfuric acid) or metal spatter due to short circuit. Risk of burn injuries  caused by short circuit. Risk of poisoning  caused by swallowing battery electrolyte (contains diluted sulfuric acid) or absorption of lead over the skin or orifices No fire, sparks, open flames or smoking. Wear acid-resistant gloves and clothing and safety glasses with side guards.
Do not place any conductive objects on the battery and avoid any short circuit from battery positive to ground.
Only fill liquid battery electrolyte (diluted sulfuric acid) into suitable and appropriately marked containers.
AS54.10-Z-0001-01A
NOTES Notes on battery   AH54.10-P-0001-01A
IMPORTANT Notes on AGM battery   AH54.10-P-0002-01A
1 Disconnect ground line (1) from the on-board electrical system battery (G1) IMPORTANT Do not disconnect the ground line from the starter battery.
Model 221.1 as of 2.6.08 with code (Z07) Top protection
Model 221.1 with code (809) Model year 2009 with code (Z07) Top protection
AR54.10-P-0003SX 
2 Unscrew bolt (5) and remove bracket (4)    
3 Unscrew nut (8) and remove retaining bracket (9)    
4 Remove battery terminal cover (6)    
5 Disconnect positive line (7) from on-board electrical system battery (G1) INSTALLATION NOTES Make sure that the positive line (7) is fitted securely to the positive terminal, otherwise the positive terminal and electrical system could be damaged.  
6 Detach vent hose (3) and remove on-board electrical system battery (G1) IMPORTANT If the on-board electrical system battery (G1) is replaced, the defect on-board electrical system battery (G1) must be disposed of properly. Refer to: ↓  
REFER TO FORMS   Dispose of battery OS54.10-P-0001-01Z
7 Install in the reverse order