Severely Discharged Battery, Charging With Battery Charger VAS 5903: Procedure

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2015 Audi S7, 2015 Audi RS 7, 2015 Audi A7 Quattro, 2014 Audi S7, and 2014 Audi RS 7. However, it is still accessible from the selected car via links, so may be relevant.

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

-- Connect the Battery Charger VAS 5903 to the power supply. The last selected operation mode is shown on the display, refer to Battery Charger VAS 5903 DEVICE DESCRIPTION .

-- Set the battery type with the INFO button.

Fig 1: Identifying Battery Type Symbols

Courtesy 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 Battery Charger VAS 5903 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 Battery Charger VAS 5903 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 Battery Charger VAS 5903 from the power.