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Home >> Audi >> 2017 >> A3 Premium, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (Charging System (Battery, Starter, Generator) & Cruise Control -- (A3 Sedan) (Battery & Charging)) >> 27 Starter, Generator And Cruise Control >> Battery, Charging >> Battery Charger : Vas5900 >> Severely Discharged Battery, Charging With Battery Charger : Vas5900 >> Procedure

Severely Discharged Battery, Charging With Battery Charger : Vas5900: Procedure

WARNING: This page is about a different variant/trim than selected.

-- Turn off the ignition and all electrical consumers and remove the ignition key.

-- Connect the :VAS5900  to the power supply. The last selected mode is shown on the display. Refer to BATTERY CHARGER .

-- Set the battery type with the INFO  button.

GWWN27-10169Courtesy of AUDI OF AMERICA, LLC

The symbol -1- for "service charge of wet batteries" or the symbol -2- for "service charge of Gel/Absorbent Glass Mat (AGM) batteries" is indicated in the display.

-- Set the battery capacity (Ah) on the Battery -A- to be charged with the corresponding ↑  button or ↓  button.

-- Connect the red charge terminal (+) to the positive terminal of the Battery -A-.

NOTE:

On vehicles with a Start/Stop function and an installed Battery Monitoring Control Module -J367-, the black charge terminal (-) must be connected to the body ground. The Start/Stop system will malfunction when it is connected to the Battery -A- negative terminal.

-- Connect the black charge terminal (-) to the negative terminal of the Battery -A- /negative connector.

-- Press the START/STOP  button for about 5 seconds. The menu selection "Charging severely discharged batteries/Support mode" is activated.

-- Press the corresponding ↑  -button or ↓  button to adjust the battery voltage (6 V/12 V/24 V).

NOTE:

If no button is touched within five seconds, the :VAS5900  will return to the main menu (operating mode selection).

-- Select the battery voltage by pressing the START/STOP  button.

Then the inquiry about the correct polarity of the charging clamps is made.

-- Check correct polarity connection of charger clamps.

-- Confirm charging clamps are connected to correct poles via START/STOP  button.

The :VAS5900  starts to charge the severely discharged Battery -A-.

Battery -A- Charging, Ending 

-- Press the START/STOP  -button.

-- Remove the charging clamps from the battery terminals.

-- Disconnect the :VAS5900  from the power.