S4 Quattro Wagon V8-4.2L (BHF) (2008)
Battery: Component Tests and General Diagnostics
Battery With Visual Indicator, Checking
Battery with Visual Indicator, 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:
‹› If a battery is more than 5 years old and the indicator is colorless, replace battery.
Test sequence
‹› When recharging the battery, and during driving, air bubbles may form under the "magic eye". They distort the color displayed by the magic eye.
‹› 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 => [ Battery with Visual Indicator, Checking ] See: .