A4 Quattro Cabriolet V6-3.2L (BKH) (2007)
Battery: Component Tests and General Diagnostics
Batteries Central Gas Venting, Checking
Batteries Central Gas Venting, Checking
CAUTION!
‹› Ensure venting system hose is always attached to battery.
‹› On batteries with central gas venting hose/pipe, ensure that hose does not become disconnected. Only then is the battery able to vent
freely.
‹› The latest generation of batteries is equipped with a central gas venting system and a fine-mesh "flame trap". Function: The gases produced during
charging escape through a central opening in the top of the battery cover. The fine-mesh flame trap which prevents ignition of the flammable gas in
the battery is also located here. The flame trap comprises a small round fiberglass mat approx. 15 mm in diameter and 2 mm thick. It operates in a
manner similar to a valve, i.e. it allows the gas produced in the battery by gassing to escape.