Battery Charger VAS5900 SUPPORT MODE
General Information
The support mode provides the vehicle electrical system with voltage when the Battery -A- is removed or disconnected.
For more information. Refer to the Battery Charger VAS5900 Operating Instructions.
The support mode is used for the following situations:
- Vehicle electrical system support mode with the Battery -A- not installed
- Maintaining the voltage when the battery is being replaced
- Systems test without the Battery -A-
Risk of injury. Follow all warning messages and safety precautions. Refer to WARNINGS AND SAFETY PRECAUTIONS .
Do not check or charge a Battery -A- when the visual indicator has >>no color or is bright yellow<<. Jump starting must not be used!
There is a risk of explosion during testing, charging or jump starting.
These Batteries -A- must be replaced.
Special tools and workshop equipment required
- Battery Charger VAS5900
Procedure
- 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!
- It can result in sparks due to short circuit.
- This constitutes an explosion risk.
- Do not touch START / STOP button when battery cables are incorrectly connected! The Battery Charger VAS5900 can become damaged.
-- Remove the Battery -A-. Refer to Battery -A-, REMOVING AND INSTALLING, VEHICLES WITH HIGH VOLTAGE SYSTEM .
-- Connect the Battery Charger VAS5900 to the power supply. The last selected mode is shown on the display. Refer to Battery Charger VAS5900 DEVICE DESCRIPTION .
Whenever the Battery -A- is removed, be careful to prevent contact between the connected charge clamp on the positive terminal and the body ground. Likewise prevent contact between the battery terminals.
-- Connect the red charge terminal (+) to the positive terminal of the Battery -A-.
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).
If no button is touched within five seconds, the Battery Charger 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 Battery Charger VAS5900 starts the Battery -A- support mode.
End the Battery Support Mode
-- Press the START/STOP -button.
-- Remove the charging clamps from the battery terminals.
-- Disconnect the Battery Charger VAS5900 from the power.