Passat GLX V6 V6-2.8L (ATQ) (2001)
Battery: Testing and Inspection
Battery With Charge Indicator (Magic Eye), Checking
Batteries With Charge Indicator (Magic Eye), Checking
Identification
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Battery housings are either black or white.
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Charge indicator -arrow- displays electrolyte level and charge condition.
Charge indicator, readings
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Green -> sufficient charge (and electrolyte level) OK
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Black -> no charge or insufficient charge
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Colorless or yellow -> critically low electrolyte level. Top up with distilled water immediately
NOTE:
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If the charge indicator on batteries in excess of 5 years old are colorless, DO NOT attempt to top and/or recharge battery. Battery must be
replaced.
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Air bubbles that occur normally during battery charging (even during vehicle operation) may adversely affect charge indicator reading. To obtain
an accurate reading, gently tap the charge indicator with a screwdriver handle or rock the vehicle in order to displace any possible air bubbles that
have formed.
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For technical reasons, some batteries are equipped with sealing plugs covered with plastic foil.
Visual check
Always carry perform a visual check of the battery before checking no load voltage, electrolyte specific gravity and load test.
Check for:
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Cracked battery case and resulting corrosion damage to surrounding area.
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Loose, damaged or corroded battery posts and terminals.
WARNING!
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Ensure that all battery post/terminal connections are securely installed and tightened according to the torque value.
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Intermittent contact at battery terminals may spark or cause electrical system malfunctions.