A4 Quattro Cabriolet V6-3.2L (BKH) (2007)
Battery: Component Tests and General Diagnostics
Battery With Charge Indicator
Battery With Charge Indicator
Distinguishing features
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These batteries have a charge indicator.
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This charge indicator -arrow- provides information on the electrolyte level and charge of the battery to be tested.
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Three different color indications are possible:
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Green -> Battery is adequately charged.
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Black -> Battery is not charged, or inadequately charged.
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Colorless or yellow critical electrolyte level has been reached, topping off with distilled water essential.
NOTE: Please observe that if the battery is older than 5 years and the color of the charge indicator is colorless, the battery is to be replaced with a
new one.
Test sequence
NOTE:
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Air bubbles may form under the charge indicator, particularly if a battery has been recharged, i.e. even if the battery has been charged while
driving. These air bubbles falsify the color indicator of the charge indicator.
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If batteries are installed with caps for production reasons, these are covered with plastic sheeting.
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Before performing a visual check, lightly and carefully tap onto the charge indicator using a screwdriver handle.
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This will cause the air bubbles to disappear
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Read color indication of "charge indicator".