Hi all!

I bought a used 2004 Audi A6 a few months ago.  Awesome car, very happy
with it.  Recently, 2 diagnostics issues have come up and I was hoping
for some advice before I take it for service.  Unfortunately, the car
was originally from Quebec, so the owner's manual is in French (I will
be purchasing once in English asap after these issues).

First, out of the blue, I frequently get this hair raising alarm beep
with a red exclamation mark surrounded by brackets on the dash display.
 This is intermittent, that is, it comes and goes.  At first I thought
it had something to do with the tire pressure sensors, since it seems to
happen going around a corner a lot, but what little I can gather from
the manual, tells me it's something to do with the brakes.  Can this be?
 If it was just a warning about the brakes needing service, would it
really scream at me like that 10 times a day?

Second, and this has me concerned there's a problem, now there is a
constant circle with a cross through, what appears to be a bomb in the
middle of the dash (I only think it looks like a bomb because I'm pretty
sure I can make out the French word for fuse in the owner's manual for
this warning logo, maybe it's something else).

Can anyone help me diagnose these issues prior to going to a dealership
for service so I have some clue what I'm in for?

Thanks in advance for any help.