Check condition of battery - AR54.10-P-1129SX

MODEL 216.3 up to 1.6.08 except CODE (809) Model year 2009 

MODEL 221.0/1 up to 1.6.08 except CODE (809) Model year 2009 

Starter battery (G1/4), shown on model 221 

Fig 1: Identifying Starter Battery Components - Shown On Model 221

Courtesy of MERCEDES-BENZ USA

On-board electrical system battery (G1), shown on model 221 

Fig 2: Identifying On-Board Electrical System Battery Components - Shown On Model 221

Courtesy of MERCEDES-BENZ USA

	Removing
	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 on battery		AH54.10-P-0001-01A
	Notes on AGM battery		AH54.10-P-0002-01A
1.1	Remove center paneling in trunk	Model 216.3, 221.0, 221.1 without code (Z07) Maximum protection for checking the on-board electrical system battery (G1).	AR68.30-P-4600SX
1.2	Remove paneling in center of luggage compartment or equipment carrier plate	Model 221.1 with code (Z07) Maximum protection for checking the on-board electrical system battery (G1). Remove trim parts depending on the vehicle equipment until the on-board electrical system battery (G1) can be checked.	AR68.30-P-4600SXS
	Checking
2	Visual inspection for external leaks	If leaks are found: Replace starter battery (G1/4) and/or on-board electrical system battery (G1). See: ↓
		Remove/install starter battery (G1/4)	AR54.10-P-0008SX
		Remove/install on-board electrical system battery (G1)	AR54.10-P-0009SX
3	Check fluid level in starter battery (G1/4), add distilled water if necessary	not with AGM battery
4	Test starter battery (G1/4) and/or on-board electrical system battery (G1)		AR54.10-P-1129-01A
		Cold test current
		Battery capacity 35 Ah	*BE54.10-P-1003-01A
		Battery capacity 60 Ah VRLA	*BE54.10-P-1006-01A
		Battery capacity 60 Ah	*BE54.10-P-1007-01A
		Battery capacity 70 Ah VRLA	*BE54.10-P-1010-01A
		Battery capacity 90 Ah VRLA	*BE54.10-P-1014-01A
		Battery capacity 95 Ah VRLA	*BE54.10-P-1015-01A
	Midtronics battery tester with test clamps	Battery test/test equipment
5	Reduce increased voltage after charging process using volt-amp(s) tester	On starter battery (G1/4) or on-board electrical system battery (G1) that is disconnected from the on-board electrical system and where the message "Surface voltage" appears in the display of the Midtronics battery tester.	AR54.10-P-1129-03A
	Midtronics battery tester with test clamps	Battery test/test equipment   After reducing increased voltage, retest starter battery (G1/4) and/or on-board electrical system battery (G1).
6	Charge starter battery (G1/4) and/or on-board electrical system battery (G1)	With the test code "Charge and check" on the Midtronics battery tester. After charging, retest starter battery (G1/4) and/or on-board electrical system battery (G1).	AR54.10-P-1130SX
	Install
7.1	Install center paneling in trunk	Model 216.3, 221.0, 221.1 without code (Z07) Maximum protection after checking the on-board electrical system battery (G1).	AR68.30-P-4600SX
7.2	Install paneling in center of luggage compartment or equipment carrier plate	Model 221.1 with code (Z07) Maximum protection after checking the on-board electrical system battery (G1).	AR68.30-P-4600SXS