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Home >> Audi >> 2021 >> A4 Quattro Premium Plus, 2.0L Eng VIN B >> Repair and Diagnosis (Single Page) >> Electrical >> Starter >> Charging System (Battery, Starter And Generator) & Cruise Control (2 Of 2) >> 27 Starter, Generator And Cruise Control >> Battery, Charging >> Battery Charger :VAS5903 >> SEVERELY DISCHARGED BATTERY, CHARGING WITH Battery Charger :VAS5903 >> Notes

SEVERELY DISCHARGED BATTERY, CHARGING WITH Battery Charger :VAS5903: Notes

Special Tools And Workshop Equipment Required 

WARNING:

Risk of injury. Follow all warning messages and safety precautions. Refer to WARNINGS AND SAFETY PRECAUTIONS .

WARNING:

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.

CAUTION:
  • 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!
  • Always set the mode that corresponds to the Battery -A- during the charging process. Refer to the :VAS5903  Operating Instructions.
  • The :VAS5903  does not recognize the severely discharged Battery -A-. Refer to SEVERELY DISCHARGED BATTERIES .
  • Do not touch START / STOP  button when battery cables are incorrectly connected! The :VAS5903  can become damaged.

The :VAS5903  will not automatically recognize the Battery -A- for Batteries -A- with a voltage less than 2 V.

NOTE:

For information in the service information. Refer to SEVERELY DISCHARGED BATTERIES .

The Battery -A- temperature must be at least 10 °C (50 °F).

Severely discharged batteries in vehicles must be replaced prior to delivery. Pre-existing damage cannot be ruled out.