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Volkswagen Polo Service & Repair Manual: Severely Discharged Battery, Charging with Battery Charger -VAS5903

Volkswagen Polo Service & Repair Manual / Battery, Starter, Generator, Cruise Control / Battery, Charging / Battery Charger -VAS5903 / Severely Discharged Battery, Charging with Battery Charger -VAS5903

Special tools and workshop equipment required
Battery Charger -VAS5903-
  WARNING
Risk of injury. Follow all Warnings and Safety Precautions. Refer to → Chapter „Warnings and Safety Precautions“.
  WARNING
Batteries that have a light yellow visual indicator do not have to be tested or charged. Jump starting must not be used!
There is a risk of explosion during testing, charging or jump starting.
These batteries must be replaced.
  Caution
The polarity protection of the charger clamps is not active in the operation mode “charging severely discharged batteries/Support mode”. Connect the charger clamps to the battery terminals correctly according to polarity!
During the charging process, always set the operation mode corresponding with the battery. Refer to the Battery Charger -VAS5903- Operating Instructions!
The severely discharged battery is not recognized by the charger. Refer to → Chapter „Severely Discharged Batteries“.
Do not touch START/STOP when battery cables are incorrectly connected! The charger can be damaged.
It is not possible for the Battery Charger -VAS5903- to automatically detect batteries with a voltage under 2 Volts.
  Note
Observe the notes in chapter. Refer to → Chapter „Severely Discharged Batteries“.
Severely discharged batteries in vehicles must be replaced prior to delivery. Pre-existing damage cannot be ruled out.
The battery temperature must be at least 10 °C (50 °F).
–  Turn off the ignition and all electrical consumers.
–  Plug in the electrical system connector of the charger. The last selected operation mode is shown on the display. Refer to → Chapter „Battery Charger -VAS5903- Device Description“.
   
–  Select battery type using INFO.
The symbol -1- for “service charge of wet batteries” or the symbol -2- for “service charge of Gel/Absorbant Glass Mat (AGM) batteries” is indicated in the display.
–  Set the capacity (Ah) of the battery to be charged with the corresponding button “Up”↑ or “Down”↓.
–  Clamp the red charging clamp “+” to the positive battery terminal.
  Note
In the case of vehicles with a start/stop function and an installed Battery Monitoring Control Module -J367-, the black charging clamp (-) must be connected to the body ground. The start/stop system will malfunction if it is connected to the negative terminal on the battery.
–  Connect the black charging clamp “-” to the negative battery terminal.
–  Press START/STOP for approximately 5 seconds. The menu item “Charging severely discharged batteries/Support mode” is activated.
–  Press the corresponding button “Up”↑ or “Down”↓, to set the respective battery voltage (6 V, 12 V or 24 V).
  Note
If no button is touched within five seconds, the battery charger will return to the main menu (operating mode selection).
–  Confirm the selected battery voltage by pressing START/STOP.
Then the inquiry about the correct polarity of the charging clamps is made.
–  Verify that the charger clamps are connected to the correct polarity.
–  Confirm that the charger clamps are connected to the correct polarity by pressing START/STOP.
The charger begins charging the severely discharged battery.
End Battery Charging Process
–  Press START/STOP.
–  Remove the black charging clamp “-” of the charger from the negative battery terminal.
–  Remove the red charging clamp “+” of the charger from the positive battery terminal.
–  Pull out the electrical system connector of the charger.
 

Severely Discharged Battery, Charging with Battery Charger -VAS5903

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