Audi TT Coupe 2009 Owner's Manual page 235

Checking and filling -
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WARNING !continued )
• Mak e s ure th e vent hose is always attached to the op ening on
t he s ide of the battery .
• Never us e batteries which are damaged . Danger of e xplo si on !
Alw ays repla ce a da maged battery .
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WARNING
Californi a Proposition 65 Warning :
• Batt ery post s, terminal s and related accessories contain lead
and lead compound s, chemic als know n to the Stat e of California
to cause cancer and reproductiv e prob lem s. Wash hand s aft er
handling.
0
Note
• Do not disconnect the vehicle battery when the ignition is
switched on or when the engine is running, otherwise, you wi ll
damage electronic components in the electrical system .
• If your vehicle is going to stand f or a long period of time without
being driven, protect the battery from "freezing", otherwise it wil l
be damaged and will then have to b e rep laced. •
Checking the battery acid level on magic eye
batteries*
The battery acid level in the battery can be checked
through the clear inspection window.
_.
Fig. 147 Luggage
compartmen t : Batt ery
w ith magic eye.
On top of the battery, t here is a round "window". Thi s
window (magic eye) changes color as the batte ry charge
and acid leve l change .
Read and heed all WARNINGS~
&
in "Work ing on the
battery" on page 231
Read the acid level f rom t he window on the battery
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fig. 147 .
Air bubbles in the window can cause an inaccurate reading. Care-
fully tap on the side of the window.
• If the window is green, the battery acid level is correct .
• If t he window has no color or is bright yellow , the battery acid
level is too low. Have the battery tested by your authorized Audi
dea ler or a qual ified workshop .
• If the window is black, then the battery is insufficiently charged.
Recharge the battery as soon as possi b le => page 234 .
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Vehicle care
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irechnical data