Battery Charger :Vas5900 Service Charge: Procedure

WARNING: This page does not describe the selected car, but rather 23 other vehicles, including the 2017 Audi S5, 2017 Audi A5 Quattro, 2016 Audi S5, 2016 Audi A5 Quattro, and 2015 Audi S5. 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 :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.

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.

The :VAS5900 Recognizes The Nominal Voltage Of The Connected Battery -A- (6 V/12 V/24 V) And Begins The Charging Process Automatically.

The :VAS5900 Begins The "Final Charging" When The Charge Level Is Approximately 80 To 85 % Of The Battery Voltage. The Fourth Bar Is Indicated On The Display -1-. The Battery -A- Is Now Ready To Be Used.

Courtesy of AUDI OF AMERICA, LLC

NOTE:

A Successful "Service Charge" Depends On The Degree Of Sulfation On The Battery -A-.

Possible Malfunctions And How They Are Handled

Displayed Voltage Does Not Match The Nominal Voltage:
-- Hold Down The ↑ Button Or ↓ Button Until The Charging Process Begins.
Displayed Battery Voltage Does Not Match The Nominal Voltage - The Charging Process Has Already Begun:
-- Press The START/STOP Button Two Times.

-- Hold Down The ↑ Button Or ↓ Button Until The Charging Process Begins.
The Charger Does Not Recognize A Battery -A-, When The Battery Voltage Is Less Than 2 V :
The Display Remains Unchanged.

The Set Operating Mode And Ampere-Hours (Ah) Are Displayed.

Battery -A- Charging, Ending

-- Press The START/STOP -Button.

-- Remove The Charging Clamps From The Battery Terminals.

-- Disconnect The :VAS5900 From The Power.