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Checking electrolyte level in battery > < Visual inspection of battery

A4 Mk3

Checking colour indicator (electrolyte level in battery) - batteries with „magic eye“
Checking colour indicator (electrolyte level in battery) - batteries with „magic eye“
   
Procedure
  Note
As the „magic eye“ is only located in one battery cell, the electrolyte level is only checked for this battery cell.
–  Prior to visual inspection, use a screwdriver handle to tap gently and carefully on the magic eye -arrow-.
  Note
When charging the battery and while driving, air bubbles may form under the „magic eye“ and falsify the colour indicator. Tapping on the „magic eye“ will disperse the air bubbles underneath.
–  Read off electrolyte level in battery from colour indicator. Two different displays are possible:
  A27-0086
Colour indicatorBattery charge state
Black or green
l  Electrolyte level in battery OK
Colourless or light yellow
l  Electrolyte level in battery too low. Risk of explosion; do not check or charge battery.

  WARNING
Risk of explosion due to a discharged battery with „magic eye“.
The battery must NOT be checked or charged if the indicator of the „magic eye“ is colourless or yellow. Do NOT boost start the vehicle. There is a risk of explosion when checking or charging the battery or boost starting the vehicle. The battery must be renewed.
  Note
Observe disposal regulations if battery has to be renewed → Anchor.
   

Checking electrolyte level in battery > < Visual inspection of battery