VW Golf manuals

Volkswagen Golf Service & Repair Manual: Charging battery in support mode with battery charger -VAS 5903-

General notes:
The support mode provides the onboard supply with power when the battery is removed or disconnected.
For further information, refer to the → operating manual VAS 5903.
The support mode is suitable in the following situations:
Support mode of onboard supplies without installed battery
Power conservation when renewing the battery
Ancillaries test without battery
  WARNING
Danger of injury! Observe warning notices and safety regulations → Chapter!
  WARNING
It is not permissible to test or charge batteries whose magic eye shows light yellow. Do not slave/jump start the vehicle!
Danger of explosion when checking and charging or slave/jump starting.
These batteries must be renewed.
–  Switch off ignition and all electrical consumers.
  Caution
The terminal polarity protection in operating mode “charging totally discharged batteries/support mode” is not active. Connect battery charger terminal clamps correctly to battery terminals.
It can cause sparks through a short-circuit.
Danger of explosion
Ensure charger terminal clamps are seated securely.
Do not press START / STOP button when charger unit cables are connected incorrectly. The charger unit may be damaged.
–  Remove battery.
–  Connect charger plug to battery charger. The last selected operating mode will appear on display → Chapter.
  Caution
When battery is removed, ensure there is no contact between terminal clamp connected to positive clamp and body earth. Also ensure there is no contact between battery clamps.
–  Connect red terminal clamp “+” to positive terminal of vehicle.
  Note
In vehicles with start/stop function and battery monitor control unit -J367- fitted, black terminal clamp must be connected to body earth. Connecting it to battery negative terminal will cause start/stop system to malfunction.
–  Connect black terminal clamp “+” to negative terminal of vehicle.
–  Press START / STOP for approx. 5 seconds. The menu “charging totally discharged batteries/support mode” will be activated.
–  Press respective button “Up”↑ or “Down”↓ to set respective battery voltage (6 V, 12 V or 24 V).
  Note
If a button is not pressed within 5 seconds the charger will return to the main menu (select operating mode).
–  Confirm the selected battery voltage with START / STOP.
Then follows the enquiry for "is charger cable terminal polarity correct".
–  Check polarity of charger unit cables.
–  Confirm polarity of charger unit cables with START / STOP.
The battery charger starts with support mode.
End battery support mode:
–  Press START / STOP.
–  Disconnect black terminal clamp “-” of charger unit from negative terminal of vehicle.
–  Disconnect red terminal clamp “+” of charger unit from positive terminal of vehicle.
–  Pull charger plug out of battery charger.
   
Charging totally discharged battery with battery charger -VAS 5903-
  WARNING Danger of injury! Observe warning notices and safety regulations → Chapter! ...

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