Mildew smell from A/c....
MBWorld Fanatic!
Joined: Dec 2004
Posts: 4,268
Likes: 253
Just use the ac more... It will self- clean most of the time unless drain is clogged. Do you see water marks on the ground when AC is running in humid weather? If you do just use the ac more and it will self flush.
MBWorld Fanatic!
Joined: Aug 2003
Posts: 8,882
Likes: 1,214
From: In my garage
E55, GLS450, GL63, GLE350
If that doesn't work, you can get a mildewcide spray made for automotive AC applications. Put the AC on the lowest temp and the fans on the highest speed. You can access the air intake from the engine bay. Spread the carbon filters apart enough to get a good clean spray into the fresh air intake of your AC system. Should do the trick. I have to do it from time to time.
Senior Member
Joined: Dec 2012
Posts: 251
Likes: 20
GL550
This works for me, too. Before I install the new filters (but with the old ones out), start the car and make certain the AC is on and your are NOT using recirculated air. I spray Lysol into the cabin air intake area and it gets pulled in by the fan. After a few seconds, you'll smell the Lysol in the cabin. Shut off the car, install the new filters and you'll be good for several months.
