Batteries - check fluid level, correct - AP54.10-P-5410A

WARNING: This page does not describe the selected car, but rather 42 other vehicles, including the 1999 Mercedes-Benz S600, 1999 Mercedes-Benz S500, 1999 Mercedes-Benz S420, 1999 Mercedes-Benz S320, and 1999 Mercedes-Benz CL600. However, it is still accessible from the selected car via links, so may be relevant.

MODEL 129,140 as of 1.6.97, 163, 168, 170, 202 as of 1.6.97, 203, 208, 209, 210 as of 1.3.97, 215, 220, 230,211

Fig 1: Identifying Battery Fluid Level

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 2: Identifying Battery Cell

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

AGM battery

Fig 3: Identifying Non-Detachable Cover Of AGM Battery

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

	Inspect
	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 fire, sparks, open flames or smoking. Wear protective gloves, acid-resistant clothing and safety glasses. Pour battery electrolyte only into suitable and appropriately marked containers.	AS54.10-Z-0001-01A
	Notes on battery	All models	AH54.10-P-0001-01A
1	Check fluid level of battery	Not with mat battery. The mat battery is maintenance free. Identification of mat battery: Black housing, imprint VRLA. If the fluid level is not visible from outside: ↓ Unscrew plugs on battery cells
	Correct
2	Unscrew plugs on battery cells	Not with mat battery. The mat battery is maintenance free. Identification of mat battery Black housing, imprint VRLA.
3	Correct fluid level of battery	Not with mat battery. The mat battery is maintenance free. Identification of mat battery Black housing, imprint VRLA. The battery cells are correctly filled if the electrolyte is approx. 12-15 mm above the plates or extends up to the visible marking.
4	Screw in plugs