Changing bulbChanging bulb  - Changing bulb for front fog lights - Fuses and bulbs - Self-help - Audi A4 Owner's Manual - Audi A4

Front fog light: Bulb holder is highlighted

Front fog light: Bulb holder is highlighted

– Turn the bulb holder anti-clockwise and take it out of the fog light housing.
– Insert the new bulb holder and turn it clockwise as far as the stop.

After changing the bulb re-install all parts in the reverse sequence and check that the bulb is working.