General Information
WARNING: This page is about a different car, the 2021 Audi S4 and 2021 Audi A4 Quattro. However, it is still accessible from the selected car via links, so may be relevant.
To guarantee a long service life, the Battery -A- must be checked, serviced and maintained as described in this service information.
The Battery -A- supplies the power to start the engine. The Battery -A- also acts as a power reserve for the entire vehicle electrical system.
NOTE:
Refer to Self Study Program.
WARNING:
Risk of injury. Follow all warning messages and Safety Precautions. WARNINGS AND SAFETY PRECAUTIONS
CAUTION:
In order to prevent damage to the Battery -A- or vehicle, observe the battery type information. Refer to BATTERY TYPES .