Battery, 48 V -A6-, VISUALLY INSPECTING AND CLASSIFYING
WARNING: This page is about a different car, the 2024 Audi SQ7, 2024 Audi Q7, 2023 Audi SQ7, and 2023 Audi Q7. However, it is still accessible from the selected car via links, so may be relevant.
Special tools and workshop equipment required
- Vehicle Diagnostic Tester
- Diagnostic Box: VAS5581 if needed
- Diagnostic Cable:VAS5581/14 if necessary
- Adapter Cable:VAS5581/1A-2 if necessary, not required when using Diagnostic Box:VAS5581A
Procedure
CAUTION:
Health risk due to toxic dust and fluids.
- Never work on a lithium-ion battery with a short circuit.
CAUTION:
There is a risk of burns due to a hot lithium-ion battery.
It is possible to burn hands.
- Do not touch a hot battery.
- Wear safety gloves.
The Battery, 48 V -A6- must be checked for:
- Cracks in the housing for the Battery, 48 V -A6-.
- Deformities in the housing for the Battery, 48 V -A6-.
- Changes in color due to temperature effects and housing discoloration.
- Leaking electrolyte.
- Contact damage.
- Presence of legible information and warning labels.
- Corrosion damage.
-- After the visual inspection, the Battery, 48 V -A6- must be classified.
-- Connect the Vehicle Diagnostic Tester.
- With the Battery, 48 V -A6- removed, use the Diagnostic Box:VAS5581 with the Diagnostic Cable:VAS5581/14 and the Adapter Cable:VAS5581/1A-2 .
- Connect the black terminal from the Diagnostic Cable:VAS5581/14 and Adapter Cable:VAS5581/1A-2 on the negative terminal of the Battery, 48 V -A6-.
- The CAN bus terminating resistor on the Diagnostic Box:VAS5581 is preset to 120 Ohm and must not be changed.
-- Select the Diagnostic mode and start the diagnosis.
-- Select the Test plan tab.
-- Select the Select individual test button and select the following tree structure consecutively:
- Body
- Electrical system
- 01 - OBD-capable systems
- 0021 - Battery Management 2 (A6, C31)
- 0021 - Battery management 2, functions
- 0021 - Battery 48V - Conditional Assessment
-- Start the selected program and follow the instructions on the Vehicle Diagnostic Tester display.