Volkswagen Golf Service & Repair Manual: Charging battery in service mode with battery charger -VAS 5900-
WARNING
| Danger of injury! Observe warning notices and safety
regulations
→ Chapter! |
|
Caution
| The operating mode “service charge” is not permitted
on VW vehicles as the voltage peaks will damage the
onboard electronics. |
| If there is a requirement to use “service charge”
the battery must be disconnected from the onboard
supply. |
|
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. |
|
Caution
| When charging always set the battery charger to the
correct type of battery
→ operating instructions for battery chargerVAS 5900! |
| The “service mode” is suitable for: |
| Wet batteries where the magic eye allows charging
(magic eye black or green) |
|
| The operating mode “service charge (SERV)” is only used on
sulphated batteries. The battery is charged at a voltage of
> 14.4 V. This can result in a partial reduction of the
sulphated layer. After charging, always check the colour of the
magic eye before using the battery
→ Chapter. |
| Special tools and workshop equipment
required |
|
|
|
| Battery charger -VAS 5900- |
 Note
| The battery must have a temperature of at least 10°C. |
| – |
Switch off ignition and all electrical consumers. |
| – |
Connect charger plug to battery charger. The last selected
operating mode will appear on display
→ Chapter. |
|
|
|
| – |
Set battery to respective battery type with
INFO. |
| In the display, the symbol -1-
for “Service charge for wet batteries” or symbol
-2- for “Service charge for
gel/absorbent glass mat batteries” will appear. |
| – |
Set battery capacity (Ah) of battery for charging using
respective button “Up”↑ or “Down”↓. |
| – |
Connect red terminal clamp “+” to positive terminal on
battery. |
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. |
| The charger unit recognises the voltage required for the
connected battery (6 V, 12 V or 24 V) and initiates the charging
sequence. |
|
|
|
| At a charge condition of approx. 80 - 85% of the battery
voltage, the battery charger switches to the “final charge”
mode. The fourth bar appears in display
-1-. The battery is ready for use. |
Note
| The success of the “service charge” depends on the severity
of the sulphation of the battery |
| Possible faults and fault rectification: |
| 1 - |
Displayed battery voltage is not as per nominal voltage: |
| – |
Press respective button “Up”↑ or
“Down”↓ until charging sequence
starts. |
| 2 - |
Displayed battery voltage is not as per nominal voltage –
charging sequence already started: |
| – |
Press START / STOP twice. |
| – |
Press respective button “Up”↑ or
“Down”↓ until charging sequence
starts. |
| 3 - |
Battery charger does not detect a battery, when battery
voltage is less than 2 V: |
| Display remains unchanged. |
| The operating mode and ampere hours (Ah) as set are
displayed. |
| Ending battery charging sequence: |
| – |
Disconnect black terminal clamp “-” of charger from negative
terminal. |
| – |
Disconnect red terminal clamp “+” of charger from positive
terminal on battery. |
| – |
Pull charger plug out of battery charger. |
|
|
|
WARNING
Danger of injury! Observe warning notices and safety
regulations
→ Chapter!
...
WARNING
Danger of injury! Observe warning notices and safety
regulations
→ Chapter!
...
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Charging battery with battery charger -VAS 5900-
Charging totally discharged batteries with battery charger -VAS 5900-