[s-cars] (no subject)

[Brian Powell]

Vincent is correct, but, hopefully in the worst case.  Audi uses a
vacuum system to actuate flaps.  There are usually 4-5 vacuum lines
(one for each set of flaps).  When the CC wants a particular
arrangement, it draws vacuum on some and releases on others.  These
lines are connected to mechanical vacuum switches which move the flaps
open or closed.

So, you probably have a problem with either a line or a "switch" (as
these are most common).  I have seen both.  In both cases, the CC did
NOT pull up a code, so, don't always believe the code from the CC.  If
you are lucky (I was in my case), one of the hoses detached from a plug
in the driver's footwell.  Plug it back in and it is fixed.  I would
recommend using Bentley as Vincent said.  It will tell you which color
hoses control which flaps.  In a friend's case, his mechanical switch
had a small leak, so, it would not maintain vacuum and, would not
close.  We had to wrestle for awhile to get it out and replace it.

I would start by tracing things from the driver's footwell and hope
that something dislodged itself.  If not, then, as Vincent said, you
may be in for a two day ordeal trying to get at the switch for the
flaps.  I hope it goes easily for you!

Cheers,
Brian