Mold in A/C system?

[LazyUmp]

Just brought my car in to Audi and the tech said there was mold building up in my A/C system. Anyone else have this problem?

[Okedokey]

Probably just the filter, replace that, but you can buy spray to get rid of it.

[80sGuy]

Pollen Filter will usually resolve issue.

[Theiceman]

Just went through this. Pollen filter will not fix this.
You will need a can of Lysol or other bacteria killing product. Spray it in the air intake under the hood while running the AC
Lots of videos on YouTube
You may need multiple treatments.

[80sGuy]

It worked for me.

[HereInOhio]

I think there is a TSB about this. I mess with a lot of cars so hard to keep them straight but I remember reading something about them putting an ionizing machine in the car overnight and treating the system. May be worth looking at the tsb's in alldata or elsewhere.