Audi Workshop Service and Repair Manuals

Special tools and workshop equipment required

• ◆ Battery tester VAS 5097 A

Note:

Using battery tester

=> Operating instructions

Test sequence

• ‒ Switch off ignition.
• ‒ Connect clips to battery posts in line with tester operating instructions. The clips must make good contact with the battery posts.
• ‒ The load current differs and must be set on the tester in line with battery capacity.

=> Battery tester operating instructions

The load test currents can also be taken from the following table.

• ‒ Perform battery load test in line with operating instructions and compare result obtained to table.

The result of the load test is the minimum voltage for battery capacity concerned.

The load current and minimum voltage differ depending on battery capacity.

• ‒ Replace battery if minimum voltage is not reached.

Explanatory notes on battery load test:

The battery voltage drops due to the heavy load on the battery during this test (flow of high current).

If the battery is OK, the voltage will only drop to the minimum voltage level.

If the battery is defective or only weakly charged, the battery voltage will drop very quickly to below the minimum voltage level stated.

This low voltage level is maintained for a lengthy period after testing and only increases again slowly.