yea that beeping sound it is probably a bomb from my guesses so i would evacuate emedeatly and sell your car!
warning lights
Signal lights staying on withot flashing indicates either front or rear signal bulb not working on the Audi
Also a3 red triangle with a circle around it
Replace turn signal flasher
There is a problem with the brakes.
check your brake pads
behind the hazard button, its built as complete assembly for Turn/hazard signal
On the 1998 Audi A6, the turn signal bulb can be replaced by opening the hood. Reach into the turn signal from the fender wall and push in and turn the old bulb to remove it. Push in and turn to replace with a new bulb.
IT IS LOCATED ON THE SIDE OF THE DASHBOARD JUST AS YOU OPEN THE DRIVER'S SIDE DOOR. IT IS LOCATED ON THE SIDE OF THE DASHBOARD JUST AS YOU OPEN THE DRIVER'S SIDE DOOR.
Bulb is burned out.
relays are located behind the lower dashboard drivers side (uk) but you dont say for what?