A4 Quattro Wagon V6-3.2L (BKH) (2005)
Battery: Testing and Inspection
Battery With Charge Indicator (Magic Eye), Checking
Battery With Charge Indicator (Magic Eye), Checking
The charge indicator - arrow - provides information on the electrolyte level and charge level of the battery to be tested.
Three different colored indications are possible:
color indicator
Battery status
Green
Battery adequately charged.
Black
Not charged or inadequately charged.
Colorless or yellow
Critical electrolyte level reached; topping up with distilled water essential.
NOTE: If a battery is more than 5 years old and the indicator is colorless, replace battery.
Test sequence
NOTE:
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When recharging the battery, and during driving, air bubbles may form under the "magic eye". They distort the color displayed by the magic eye.
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If batteries are fitted with sealing plugs for production reasons, these are covered with plastic foil.
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Prior to visual inspection, use screwdriver handle to tap gently and carefully on "magic eye" to disperse any bubbles.
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Observe color of charge indicator.