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– Before checking electrolyte level: Tap magic eye -arrow- care‐
fully with handle of a screwdriver.
– Read off battery electrolyte level according to colour display.
Two different results are possible:
Colour of magic eye:
Measure:
Black or green
Electrolyte level OK: No further measures necessary
Colourless or light yellow
Electrolyte level too low: Battery must be renewed
Install in reverse sequence.
Note
♦
The magic eye is also referred to as an ALI (acid level indica‐
tor).
♦
The magic eye is only for use in determining the electrolyte
level.
♦
During battery charging or vehicle operation, air bubbles can
form underneath the magic eye which could falsify the colour
display. Tap magic eye lightly to release any bubbles.
3.9
Battery: connecting to a stationary bat‐
tery charging unit for sustained charging
DANGER!
Risk of fatal injury if high-voltage components are damaged.
♦ Observe warnings for high-voltage system:
♦ Handling high-voltage wires
.
♦ For work in the vicinity of high-voltage components
WARNING
Risk of injury if battery terminal clamps are connected incor‐
rectly.
♦ Connect positive battery terminal clamp first, then connect
negative battery terminal clamp.
Special tools and workshop equipment required
Audi A8 2010 ➤
Maintenance - Edition 11.2014
34
3. Maintenance