SL-Class (R231) 2013 on: Discussion on the SL550

SL/R231: Odor when starting car

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Old Sep 3, 2023 | 06:28 PM
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Odor when starting car

Hello. I am brand new to this forum. I have a 2017 SL 63. After the car is warm and has been sitting for a bit, when I get in the car and restart a it with the AC on, there is this terrible rotten fruit smell that blows out of the vents. After a while it goes away. Anyone here have ideas? Have you guys heard of this before?
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Old Sep 3, 2023 | 08:15 PM
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Dead mouse?
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Old Sep 3, 2023 | 08:48 PM
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Originally Posted by 512SL
Hello. I am brand new to this forum. I have a 2017 SL 63. After the car is warm and has been sitting for a bit, when I get in the car and restart a it with the AC on, there is this terrible rotten fruit smell that blows out of the vents. After a while it goes away. Anyone here have ideas? Have you guys heard of this before?
This is common in humid areas with well sealed hvac systems. Look up how to clean, sanitize your vents. Most use lysol. Some use ozone.

The way to prevent this is to turn off a. The last few minutes of a drive to help the wet vents dry out.

obviously check your cabin filters…I like carbon replacements.
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Old Sep 4, 2023 | 10:05 AM
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Taking a shower might solve the problem if cabin stinks!!
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Old Sep 4, 2023 | 10:07 AM
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I'm also thinking maybe a dead mouse...
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Old Sep 5, 2023 | 07:45 AM
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Not sure.

Try changing the cabin filter.

Also pop the hood and look around good to see if a mouse/rat, etc. is stuck in a corner, or down in a pocket someplace. It may smell once the car is warm because the dead body heats up etc.



Originally Posted by 512SL
Hello. I am brand new to this forum. I have a 2017 SL 63. After the car is warm and has been sitting for a bit, when I get in the car and restart a it with the AC on, there is this terrible rotten fruit smell that blows out of the vents. After a while it goes away. Anyone here have ideas? Have you guys heard of this before?
Reply
Old Sep 5, 2023 | 09:44 PM
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Sounds like the smelly AC issue MB and many cars have. Change the filter, use a couple cans of Kool-It. Smell goes away. Had this issue on a Mercedes ML350, Dodge Caravan and a Honda. The filters and Kool-It fixed it all.
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