Battery With Visual Indicator

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WARNING:

If the "Visual Indicator" is colorless or light yellow: Do not check or charge the battery. Do not perform a jump start. There is danger of explosion! The battery must be replaced. Refer to appropriate service information. .

NOTE:

The "visual indicator" -arrow- provides information about the fluid levels and the charge level for the battery being checked.

Fig 1: Identifying "Magic Eye" On Battery

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

As the "visual indicator" is only located in a battery cell, only the battery electrolyte level for this battery cell can be checked.

-- Make sure the battery and the terminal clamps are secure. Tighten them if necessary. Refer to BATTERY, CHECKING CABLES FOR SECURE SEATING .

-- Read the battery electrolyte level present in the color display.

Two different displays are possible

Color display	Battery level
Black or green	Battery electrolyte level OK
Colorless or light yellow	Battery electrolyte level too low.

NOTE:

Bubbles can build up under the "visual indicator" when the battery is charging and also while driving, causing the color displayed to be incorrect.

Gently and carefully tap the "visual indicator" with the end of a screwdriver to loosen any air bubbles.