Audi A6 - musty smell in a/c

[DeWitt Harrison]

On Thu, 19 May 2011 13:07:36 -0400, Dennis Graber wrote:

> We have had an 05 for 3 years now, and love the car. It is beautiful, runs
great, and the interior is a benchmark of the industry. (IMO)
> The drawbacks so far have been;

> AC mildew smell that the dealer says can not be cured
> [clip]

Mold/mildew/bacteria in the A/C evaporator condensation tray can be cured
with some patience and a BG product called Frigi-Fresh, an aerosol spray.
First make sure your condensation tray drains properly. You should find a
small water puddle under the car after parking it on a warm, humid day. It
might be wise to run a wire up the tray's drain hose to make sure the tray
drain port is not clogged.

Proper drainage being established, use the Frigi-Fresh per directions. It is
key to get good direct access to the A/C air intake. It may require more
than one treatment. Although my old Audi has never developed the musty odor
problem, my Infiniti is definitely prone to it and I need to treat it
annually. I like to remove the glove box and under-dash panel to get perfect
access in the Infiniti. My $10 spray can of this stuff is still more than
half full after about 3 seasons of treatments.

DeWitt Harrison
'88 5000CS