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Home >> Mercedes Benz >> 2013 >> C250 Base >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Electrical System, Equipment & Instructions -- 204 C Class - 1 Of 6 >> Maintenance >> Batteries - checking and correcting fluid level - AP54.10-P-5410CW

Batteries - checking and correcting fluid level - AP54.10-P-5410CW

MODEL 204.0/2/9 with liquid battery 

Fig 1: Identifying Air Duct Housing, Plug And On-Board Electrical System Battery
G09983712Courtesy of MERCEDES-BENZ USA
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
IMPORTANT Depending on the vehicle model and installed special equipment, the type (liquid or absorbent glass mat battery) and where it is installed (engine or luggage compartment) of the on-board electrical system battery (G1) can vary    
1.1 Open engine hood and raise to vertical position For an on-board electrical system battery (G1) mounted in the engine compartment  
1.2 Open trunk lid or liftgate For an on-board electrical system battery (G1) mounted in the luggage compartment  
2.1 Remove air duct housing (1) For an on-board electrical system battery (G1) mounted in the engine compartment  
2.2 Lift cover for trunk floor and cover for on-board electrical system battery (G1) For an on-board electrical system battery (G1) mounted in the luggage compartment  
3 Remove stop plugs (2) of all battery cells from the on-board electrical system battery (G1)    
INSPECT Checking     
4 Check battery fluid level in all battery cells, correct if necessary IMPORTANT In each battery cell the fluid must reach up to the web let into the filler opening.
Only distilled water may be used for topping up the battery.
 
5 Install in the reverse order