AGM Batteries, Checking
WARNING: This page does not describe the selected car, but rather 18 other vehicles, including the 2016 Audi S4, 2016 Audi A4 Quattro, 2016 Audi A4, 2015 Audi S4, and 2015 Audi A4 Quattro. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
The crash safety is reduced if an incorrect battery is installed.
Always replace an AGM battery with another AGM battery if that is what the vehicle originally had installed.
NOTE:
AGM batteries are marked with "AGM".
The AGM battery is closed, needs no further maintenance, and must not be opened.
-- Make sure the battery and the terminal clamps are secure. Tighten them if necessary. Refer to BATTERY, CHECKING FOR SECURE FIT .
-- Perform a visual inspection of the battery:
- Corrosion on the battery pole
- Damage to the battery terminals and housing