AC foul odor
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Member
Joined: Mar 2012
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09 M3
AC foul odor
My wife complains the smell every time we use the AC. The smell is usually when you first turn on the AC. We had similar experience on our previous vehicle and we took to service and was covered by warranty. I remember reading somewhere the smell is from the mold/ condensation from the AC. My question is have you guys had any similar issue and did you take it to service? Covered under warranty? TIA!
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2012 C63;1971 280SE 3.5(Sold);2023 EQS 450 SUV 4 Matic (Wife's)
You will need a new cabin filter and clean and disinfect the A/C condensation drain. The dealer may help under warranty. Only way to find out is to ask for a solution to the smell and see what they say. Ask the for the best way to use the system to avoid the problem in the future and as norb says avoid recirc or remember to turn it off as soon as you can.
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From: Orlando, Florida
E350 Sport/ML350RWD
If under warranty- the dealership has a TSB. They have a solution they spray on the condensor via a small tube to eliminate the mildew. It also helps to run your heat for a minute or two after running the cold A/C to remove moisture from the blowers and the vents.
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C63 AMG P30 *EuroCharged*| Porsche Cayenne | Buell XB9SX
+1. i seem to have this problem with every car that i own. strangely enough, no one else that i personally know has this problem, lol. i replaced the cabin filter and the smell went away. now i always run the ran with AC off before shutting it down to help dry off the coils.
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MBWorld Fanatic!
Joined: Dec 2007
Posts: 3,056
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From: Orlando, Florida
E350 Sport/ML350RWD
I will require more than a filter change. That is a partial fix.
https://mbworld.org/forums/attachmen...y-a_c-odor.pdf
https://mbworld.org/forums/attachmen...y-a_c-odor.pdf
Super Member
Joined: Mar 2003
Posts: 869
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From: Pacific NW
AMG GT-R
I've tried all the tricks before and still get that smell for a few seconds! I've gone as far as not using the A/C at all since I've owned the car, which I can usually get away with here in the Northwest. I've literally used it maybe 1 or 2 times during the summer months where windows down driving is too unbearable, but I guess just using it one time will still cause that sweet/sour odor to come out of the vents.
Senior Member
Joined: Dec 2005
Posts: 427
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From: TEXAS
C63 AMG
I will require more than a filter change. That is a partial fix.
https://mbworld.org/forums/attachmen...y-a_c-odor.pdf
https://mbworld.org/forums/attachmen...y-a_c-odor.pdf
Senior Member
Joined: Sep 2007
Posts: 316
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From: Woodstock, GA. USA
w204-C300
I've been told by the dealership's service deoartment to keep the air recirculation button once the filter have been change to reduce the likeliness of the foul odor coming back. Is this true? Since I always leave it off. Thats ehat the default is, right?
