Check battery

AR54.10-S-1129-01P	Check battery
 Danger	Risk of fire/risk of explosion due to short circuit and escaping oxyhydrogen gas. Risk of (burn) injury caused by caustic burns to eyes, skin and mucous membranes from battery electrolyte/mist, short circuit and arcing. Risk of poisoning caused by swallowing battery electrolyte or absorption of lead through the skin or body orifices. Risk of death due to voltage U >= 30 V AC and U >= 60 V DC.	No fires, sparks, open flames, or smoking. Wear acid-resistant gloves, clothing, and glasses. Pour battery acid only into suitable and appropriately marked containers.	AS54.10-Z-0001-01A
Topical note	Notes on battery		AH54.10-P-0001-01A
	000 588 02 19 00 Battery tester		WS54.00-N-3006B
	000 588 03 19 00 Load tester		WS15.00-P-0027B

Model

470, 471

 All test steps and entries must be conducted painstakingly.
Otherwise the test result may be incorrect.

 Whenever possible, carry out tests with on-board electrical system battery installed and connected.

1	Switch off ignition.

2	Switch off interior and exterior lights.

3	Switch off audio component (e.g. radio).

4	Connect battery test device to on-board electrical system battery.

 Do not connect battery test device to jump start or charging terminal point when the on-board electrical system battery is installed; always connect it directly to the on-board electrical system battery.
Otherwise the test result may be incorrect.

 Check battery test device is securely connected to on-board electrical system battery.
Otherwise the test result may be incorrect.

 Once the battery tester has been connected the currently measured battery voltage is displayed.
During the test procedure, the battery tester may detect so-called "system noise".
In this instance, check whether all consumers are switched off and wait approx. 2 minutes until the quiescent current is minimized and the bus systems are shut down.

5.1	If, with the on-board electrical system battery installed, the "Surface voltage" message is shown during the test. Reduce increased voltage as per the battery tester specifications (e.g. switch on driving lights).

5.2	If, with the on-board electrical system battery removed, the "Surface voltage" message is shown during the test. Reduce increased voltage using load tester (Load on-board electrical system battery for approx. 60 s with 20 A to 30 A).

6	Conduct test procedure to match the battery tester menu navigation.

7	After the test print out the test code displayed and store it safely in a tamperproof manner.

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