Volkswagen Golf Service & Repair Manual: Charging battery in support mode with battery charger -VAS 5900-
| 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 5900. |
| 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. |
| 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. |
|
| – |
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: |
| – |
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. |
|
|
|
WARNING
Danger of injury! Observe warning notices and safety
regulations
→ Chapter!
...
Note
When a battery is being charged in the maintenance mode and
an electrical consumer draws current from the battery, the
battery charger -VAS ...
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Charging totally discharged batteries with battery charger -VAS 5900-
Charging battery in maintenance mode with battery charger -VAS 5900-