Passat V6-2.8L (ATQ) (2004)
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Remove battery hold-down bracket.
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If present, disconnect central gas vent hose from top cover.
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Carefully lift battery from plenum.
Battery, installing
To ensure battery seats securely, only install batteries with a 10.5 mm battery foot strip and adhere to the following work sequences:
NOTE:
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New generation batteries are equipped with a central gas venting system and integrated flame trap -arrow-. Function: Gases produced during
charging escape through a central opening on the side of the upper cover. The integrated flame trap prevents flammable gases in the battery from
igniting. The flame trap is comprised of a small round fiberglass mat with a diameter of 15 mm and a thickness of 2 mm. Working as a
one-way-valve, it allows gases produced during charging to vent.
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To ensure proper seating of installed battery, use only genuine Volkswagen approved replacement batteries, and adhere to the following
procedures.
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Install hold-down bracket
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Install M8 x 25 bolt -arrow- and torque to 23 Nm.
CAUTION: Results of inadequately secured battery:
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Shorter battery service life due to vibration damage.
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Battery cell and plate damage.
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Electrolyte leakage due to battery case damage.
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Poor collision safety.
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Reconnect battery.
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If present, reconnect central gas vent hose to top cover.
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Reinstall battery cover and cowl panel as required.
Battery Charger, Connecting
Battery Charger, Connecting
WARNING: Danger of explosion.
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Batteries produce explosive gasses while being charged.
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Keep open flames and sparks away and DO NOT smoke near batteries.
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The battery charger MUST be turned off when connecting or disconnecting the cables at the battery.
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Battery cell caps must NOT be removed while charging.
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"Boosting" a sulfated battery a high charging rate can cause an explosion.