Check condition of battery up to 1-6-2008 - 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: Checking Condition Of Starter Battery (Shown On Model 221)

Courtesy of MERCEDES-BENZ USA

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

Fig 2: Checking Condition Of On-Board Electrical System Battery (Shown On Model 221)

Courtesy of MERCEDES-BENZ USA

	Removing
	Risk of explosion  caused by oxyhydrogen gas. Risk of poisoning and caustic burns  caused by swallowing battery acid. Risk of injury  caused by burns to skin and eyes from battery acid or when handling damaged lead-acid batteries	No fire, sparks, open flames or smoking. Wear acid-resistant gloves, clothing and glasses. Only pour battery 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). Refer to: ↓ 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 Midtronics battery tester with test clamps	*BE54.10-P-1002-01A
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. Midtronics battery tester Volt/amp tester After reducing increased voltage, retest starter battery (G1/4) and/or on-board electrical system battery (G1).	AR54.10-P-1129-03A
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