- Once a year, it is necessary to check the protective covers of the ball joints. If the covers have cracks, tears, etc., they must be replaced. Check and, if necessary, adjust the installation angles of the front wheels.
- Check the thickness of the friction linings of the disc brake pads. Replace the pads if necessary.
- For diesel engines, replace the oil in the engine lubrication system and drain the sediment from the fuel filter.
(The original article is available on the online resource AUDImanual)