Volkswagen Touran Service Manual: 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.

Note

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 "standard charge of wet batteries" or the symbol -2- for "standard 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.

The battery charger recognizes the nominal voltage of the connected battery (6 V, 12 V or 24 V) and begins the charging process automatically.

Battery, Charging with Battery Charger -VAS5903

At a charge condition of approximately 80 - 85%, charging unit begins the "Final-charging". The fourth bar is indicated on the display -1-. The battery is now ready to be used.

With a charge status of 100%, all bars are indicated on the display.

Note With the battery type "standard charge", parallel operation of consumers during the charging process is possible. The charging time is lengthened by this. Depending on battery type, the charger switches over to sustain charging after approximately 1-7 hours. To achieve a 100% charge status, the battery should remain connected to the charger for that long.

Possible malfunctions and how they are handled:

1 -	Displayed voltage does not match the nominal voltage:

Hold the appropriate button "Up"↑ or "Down"↓ until the charging process begins.

2 -	Displayed battery voltage does not match rated voltage - charging process has already begun:

Press START/STOP twice.

Hold the appropriate button "Up"↑ or "Down"↓ until the charging process begins again.

3 -	The charger does not recognize a battery, when the battery voltage is less than 2 V:

The display remains unchanged.

The selected battery type and Ampere hours (Ah) are displayed.

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.

Battery, Charging with Battery Charger -VAS5903